make internal stats independent of statistics
Summary: also make it aware of column family output from db_bench ``` ** Compaction Stats [default] ** Level Files Size(MB) Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) RW-Amp W-Amp Rd(MB/s) Wr(MB/s) Rn(cnt) Rnp1(cnt) Wnp1(cnt) Wnew(cnt) Comp(sec) Comp(cnt) Avg(sec) Stall(sec) Stall(cnt) Avg(ms) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ L0 14 956 0.9 0.0 0.0 0.0 2.7 2.7 0.0 0.0 0.0 111.6 0 0 0 0 24 40 0.612 75.20 492387 0.15 L1 21 2001 2.0 5.7 2.0 3.7 5.3 1.6 5.4 2.6 71.2 65.7 31 43 55 12 82 2 41.242 43.72 41183 1.06 L2 217 18974 1.9 16.5 2.0 14.4 15.1 0.7 15.6 7.4 70.1 64.3 17 182 185 3 241 16 15.052 0.00 0 0.00 L3 1641 188245 1.8 9.1 1.1 8.0 8.5 0.5 15.4 7.4 61.3 57.2 9 75 76 1 152 9 16.887 0.00 0 0.00 L4 4447 449025 0.4 13.4 4.8 8.6 9.1 0.5 4.7 1.9 77.8 52.7 38 79 100 21 176 38 4.639 0.00 0 0.00 Sum 6340 659201 0.0 44.7 10.0 34.7 40.6 6.0 32.0 15.2 67.7 61.6 95 379 416 37 676 105 6.439 118.91 533570 0.22 Int 0 0 0.0 1.2 0.4 0.8 1.3 0.5 5.2 2.7 59.1 65.6 3 7 9 2 20 10 2.003 0.00 0 0.00 Stalls(secs): 75.197 level0_slowdown, 0.000 level0_numfiles, 0.000 memtable_compaction, 43.717 leveln_slowdown Stalls(count): 492387 level0_slowdown, 0 level0_numfiles, 0 memtable_compaction, 41183 leveln_slowdown ** DB Stats ** Uptime(secs): 202.1 total, 13.5 interval Cumulative writes: 6291456 writes, 6291456 batches, 1.0 writes per batch, 4.90 ingest GB Cumulative WAL: 6291456 writes, 6291456 syncs, 1.00 writes per sync, 4.90 GB written Interval writes: 1048576 writes, 1048576 batches, 1.0 writes per batch, 836.0 ingest MB Interval WAL: 1048576 writes, 1048576 syncs, 1.00 writes per sync, 0.82 MB written Test Plan: ran it Reviewers: sdong, yhchiang, igor Reviewed By: igor Subscribers: leveldb Differential Revision: https://reviews.facebook.net/D19917
This commit is contained in:
Lei Jin
parent
50c2dcb78f
commit
f6f1533c6f
@ -222,8 +222,8 @@ ColumnFamilyData::ColumnFamilyData(const std::string& dbname, uint32_t id,
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// if dummy_versions is nullptr, then this is a dummy column family.
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if (dummy_versions != nullptr) {
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internal_stats_.reset(new InternalStats(
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options_.num_levels, db_options->env, db_options->statistics.get()));
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internal_stats_.reset(
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new InternalStats(options_.num_levels, db_options->env));
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table_cache_.reset(new TableCache(&options_, storage_options, table_cache));
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if (options_.compaction_style == kCompactionStyleUniversal) {
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compaction_picker_.reset(
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@ -510,9 +510,23 @@ void DBImpl::MaybeDumpStats() {
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// atomically. We could see more than one dump during one dump
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// period in rare cases.
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last_stats_dump_time_microsec_ = now_micros;
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DBPropertyType cf_property_type = GetPropertyType("rocksdb.cfstats");
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std::string stats;
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GetProperty("rocksdb.stats", &stats);
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{
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MutexLock l(&mutex_);
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for (auto cfd : *versions_->GetColumnFamilySet()) {
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cfd->internal_stats()->GetProperty(cf_property_type, "rocksdb.cfstats",
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&stats, cfd);
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}
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DBPropertyType db_property_type = GetPropertyType("rocksdb.dbstats");
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default_cf_internal_stats_->GetProperty(
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db_property_type, "rocksdb.dbstats", &stats,
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default_cf_handle_->cfd());
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}
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Log(options_.info_log, "------- DUMPING STATS -------");
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Log(options_.info_log, "%s", stats.c_str());
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PrintStatistics();
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}
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}
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@ -1157,6 +1171,7 @@ Status DBImpl::Recover(
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SequenceNumber max_sequence(0);
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default_cf_handle_ = new ColumnFamilyHandleImpl(
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versions_->GetColumnFamilySet()->GetDefault(), this, &mutex_);
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default_cf_internal_stats_ = default_cf_handle_->cfd()->internal_stats();
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single_column_family_mode_ =
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versions_->GetColumnFamilySet()->NumberOfColumnFamilies() == 1;
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@ -1419,6 +1434,8 @@ Status DBImpl::WriteLevel0TableForRecovery(ColumnFamilyData* cfd, MemTable* mem,
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stats.bytes_written = meta.fd.GetFileSize();
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stats.files_out_levelnp1 = 1;
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cfd->internal_stats()->AddCompactionStats(level, stats);
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cfd->internal_stats()->AddCFStats(
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InternalStats::BYTES_FLUSHED, meta.fd.GetFileSize());
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RecordTick(options_.statistics.get(), COMPACT_WRITE_BYTES,
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meta.fd.GetFileSize());
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return s;
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@ -1509,6 +1526,8 @@ Status DBImpl::WriteLevel0Table(ColumnFamilyData* cfd,
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stats.micros = env_->NowMicros() - start_micros;
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stats.bytes_written = meta.fd.GetFileSize();
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cfd->internal_stats()->AddCompactionStats(level, stats);
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cfd->internal_stats()->AddCFStats(
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InternalStats::BYTES_FLUSHED, meta.fd.GetFileSize());
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RecordTick(options_.statistics.get(), COMPACT_WRITE_BYTES,
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meta.fd.GetFileSize());
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return s;
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@ -1979,9 +1998,8 @@ void DBImpl::BackgroundCallFlush() {
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// case this is an environmental problem and we do not want to
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// chew up resources for failed compactions for the duration of
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// the problem.
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uint64_t error_cnt = default_cf_handle_->cfd()
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->internal_stats()
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->BumpAndGetBackgroundErrorCount();
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uint64_t error_cnt =
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default_cf_internal_stats_->BumpAndGetBackgroundErrorCount();
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bg_cv_.SignalAll(); // In case a waiter can proceed despite the error
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mutex_.Unlock();
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Log(options_.info_log,
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@ -2047,9 +2065,8 @@ void DBImpl::BackgroundCallCompaction() {
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// case this is an environmental problem and we do not want to
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// chew up resources for failed compactions for the duration of
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// the problem.
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uint64_t error_cnt = default_cf_handle_->cfd()
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->internal_stats()
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->BumpAndGetBackgroundErrorCount();
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uint64_t error_cnt =
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default_cf_internal_stats_->BumpAndGetBackgroundErrorCount();
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bg_cv_.SignalAll(); // In case a waiter can proceed despite the error
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mutex_.Unlock();
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log_buffer.FlushBufferToLog();
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@ -3146,8 +3163,8 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
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LogFlush(options_.info_log);
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mutex_.Lock();
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cfd->internal_stats()->AddCompactionStats(compact->compaction->output_level(),
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stats);
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cfd->internal_stats()->AddCompactionStats(
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compact->compaction->output_level(), stats);
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// if there were any unused file number (mostly in case of
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// compaction error), free up the entry from pending_putputs
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@ -3774,9 +3791,13 @@ Status DBImpl::Write(const WriteOptions& options, WriteBatch* my_batch) {
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if (!options.disableWAL) {
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RecordTick(options_.statistics.get(), WRITE_WITH_WAL, 1);
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default_cf_internal_stats_->AddDBStats(
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InternalStats::WRITE_WITH_WAL, 1);
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}
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if (w.done) {
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default_cf_internal_stats_->AddDBStats(
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InternalStats::WRITE_DONE_BY_OTHER, 1);
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mutex_.Unlock();
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RecordTick(options_.statistics.get(), WRITE_DONE_BY_OTHER, 1);
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return w.status;
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@ -3807,6 +3828,8 @@ Status DBImpl::Write(const WriteOptions& options, WriteBatch* my_batch) {
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return Status::TimedOut();
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} else {
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RecordTick(options_.statistics.get(), WRITE_DONE_BY_SELF, 1);
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default_cf_internal_stats_->AddDBStats(
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InternalStats::WRITE_DONE_BY_SELF, 1);
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}
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// Once reaches this point, the current writer "w" will try to do its write
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@ -3892,17 +3915,19 @@ Status DBImpl::Write(const WriteOptions& options, WriteBatch* my_batch) {
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WriteBatchInternal::SetSequence(updates, current_sequence);
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int my_batch_count = WriteBatchInternal::Count(updates);
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last_sequence += my_batch_count;
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const uint64_t batch_size = WriteBatchInternal::ByteSize(updates);
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// Record statistics
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RecordTick(options_.statistics.get(),
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NUMBER_KEYS_WRITTEN, my_batch_count);
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RecordTick(options_.statistics.get(),
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BYTES_WRITTEN,
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WriteBatchInternal::ByteSize(updates));
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batch_size);
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if (options.disableWAL) {
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flush_on_destroy_ = true;
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}
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PERF_TIMER_STOP(write_pre_and_post_process_time);
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uint64_t log_size = 0;
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if (!options.disableWAL) {
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PERF_TIMER_START(write_wal_time);
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Slice log_entry = WriteBatchInternal::Contents(updates);
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@ -3910,8 +3935,9 @@ Status DBImpl::Write(const WriteOptions& options, WriteBatch* my_batch) {
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total_log_size_ += log_entry.size();
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alive_log_files_.back().AddSize(log_entry.size());
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log_empty_ = false;
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log_size = log_entry.size();
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RecordTick(options_.statistics.get(), WAL_FILE_SYNCED, 1);
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RecordTick(options_.statistics.get(), WAL_FILE_BYTES, log_entry.size());
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RecordTick(options_.statistics.get(), WAL_FILE_BYTES, log_size);
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if (status.ok() && options.sync) {
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if (options_.use_fsync) {
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StopWatch(env_, options_.statistics.get(), WAL_FILE_SYNC_MICROS);
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@ -3942,8 +3968,19 @@ Status DBImpl::Write(const WriteOptions& options, WriteBatch* my_batch) {
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last_sequence);
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}
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PERF_TIMER_START(write_pre_and_post_process_time);
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if (updates == &tmp_batch_) tmp_batch_.Clear();
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if (updates == &tmp_batch_) {
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tmp_batch_.Clear();
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}
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mutex_.Lock();
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// internal stats
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default_cf_internal_stats_->AddDBStats(
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InternalStats::BYTES_WRITTEN, batch_size);
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if (!options.disableWAL) {
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default_cf_internal_stats_->AddDBStats(
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InternalStats::WAL_FILE_SYNCED, 1);
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default_cf_internal_stats_->AddDBStats(
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InternalStats::WAL_FILE_BYTES, log_size);
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}
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if (status.ok()) {
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versions_->SetLastSequence(last_sequence);
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}
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@ -4126,10 +4163,10 @@ Status DBImpl::MakeRoomForWrite(
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delayed = sw.ElapsedMicros();
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}
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RecordTick(options_.statistics.get(), STALL_L0_SLOWDOWN_MICROS, delayed);
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cfd->internal_stats()->RecordWriteStall(InternalStats::LEVEL0_SLOWDOWN,
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delayed);
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allow_delay = false; // Do not delay a single write more than once
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mutex_.Lock();
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cfd->internal_stats()->AddCFStats(
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InternalStats::LEVEL0_SLOWDOWN, delayed);
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delayed_writes_++;
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} else if (!force && !cfd->mem()->ShouldFlush()) {
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// There is room in current memtable
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@ -4160,7 +4197,7 @@ Status DBImpl::MakeRoomForWrite(
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}
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RecordTick(options_.statistics.get(),
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STALL_MEMTABLE_COMPACTION_MICROS, stall);
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cfd->internal_stats()->RecordWriteStall(
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cfd->internal_stats()->AddCFStats(
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InternalStats::MEMTABLE_COMPACTION, stall);
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} else if (cfd->NeedWaitForNumLevel0Files()) {
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DelayLoggingAndReset();
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@ -4179,11 +4216,11 @@ Status DBImpl::MakeRoomForWrite(
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}
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RecordTick(options_.statistics.get(),
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STALL_L0_NUM_FILES_MICROS, stall);
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cfd->internal_stats()->RecordWriteStall(InternalStats::LEVEL0_NUM_FILES,
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stall);
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cfd->internal_stats()->AddCFStats(
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InternalStats::LEVEL0_NUM_FILES, stall);
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} else if (allow_hard_rate_limit_delay && cfd->ExceedsHardRateLimit()) {
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// Delay a write when the compaction score for any level is too large.
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int max_level = cfd->current()->MaxCompactionScoreLevel();
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const int max_level = cfd->current()->MaxCompactionScoreLevel();
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score = cfd->current()->MaxCompactionScore();
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mutex_.Unlock();
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uint64_t delayed;
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@ -4193,7 +4230,6 @@ Status DBImpl::MakeRoomForWrite(
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env_->SleepForMicroseconds(1000);
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delayed = sw.ElapsedMicros();
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}
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cfd->internal_stats()->RecordLevelNSlowdown(max_level, delayed);
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// Make sure the following value doesn't round to zero.
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uint64_t rate_limit = std::max((delayed / 1000), (uint64_t) 1);
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rate_limit_delay_millis += rate_limit;
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@ -4205,7 +4241,9 @@ Status DBImpl::MakeRoomForWrite(
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allow_hard_rate_limit_delay = false;
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}
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mutex_.Lock();
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cfd->internal_stats()->RecordLevelNSlowdown(max_level, delayed, false);
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} else if (allow_soft_rate_limit_delay && cfd->ExceedsSoftRateLimit()) {
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const int max_level = cfd->current()->MaxCompactionScoreLevel();
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score = cfd->current()->MaxCompactionScore();
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// Delay a write when the compaction score for any level is too large.
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// TODO: add statistics
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@ -4221,6 +4259,7 @@ Status DBImpl::MakeRoomForWrite(
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}
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allow_soft_rate_limit_delay = false;
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mutex_.Lock();
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cfd->internal_stats()->RecordLevelNSlowdown(max_level, slowdown, true);
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} else {
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unique_ptr<WritableFile> lfile;
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log::Writer* new_log = nullptr;
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@ -475,6 +475,7 @@ class DBImpl : public DB {
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unique_ptr<log::Writer> log_;
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bool log_empty_;
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ColumnFamilyHandleImpl* default_cf_handle_;
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InternalStats* default_cf_internal_stats_;
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unique_ptr<ColumnFamilyMemTablesImpl> column_family_memtables_;
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struct LogFileNumberSize {
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explicit LogFileNumberSize(uint64_t _number)
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@ -7,10 +7,10 @@
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "db/internal_stats.h"
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#define __STDC_FORMAT_MACROS
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#include <inttypes.h>
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#include <vector>
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#include "db/column_family.h"
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#include "db/column_family.h"
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@ -20,33 +20,30 @@ namespace {
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const double kMB = 1048576.0;
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const double kGB = kMB * 1024;
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void PrintLevelStatsHeader(char* buf, size_t len) {
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void PrintLevelStatsHeader(char* buf, size_t len, const std::string& cf_name) {
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snprintf(
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buf, len,
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"\n** Compaction Stats **\n"
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"Level Files Size(MB) Score Read(GB) Rn(GB) Rnp1(GB) "
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"\n** Compaction Stats [%s] **\n"
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"Level Files Size(MB) Score Read(GB) Rn(GB) Rnp1(GB) "
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"Write(GB) Wnew(GB) RW-Amp W-Amp Rd(MB/s) Wr(MB/s) Rn(cnt) "
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"Rnp1(cnt) Wnp1(cnt) Wnew(cnt) Comp(sec) Comp(cnt) Avg(sec) "
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"Stall(sec) Stall(cnt) Avg(ms)\n"
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"--------------------------------------------------------------------"
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"--------------------------------------------------------------------"
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"--------------------------------------------------------------------\n");
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"--------------------------------------------------------------------\n",
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cf_name.c_str());
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}
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void PrintLevelStats(char* buf, size_t len, const std::string& name,
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int num_files, double total_file_size, double score,
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double stall_us, uint64_t stalls,
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int num_files, int being_compacted, double total_file_size, double score,
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double rw_amp, double w_amp, double stall_us, uint64_t stalls,
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const InternalStats::CompactionStats& stats) {
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int64_t bytes_read = stats.bytes_readn + stats.bytes_readnp1;
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int64_t bytes_new = stats.bytes_written - stats.bytes_readnp1;
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double rw_amp = (stats.bytes_readn== 0) ? 0.0
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: (stats.bytes_written + bytes_read) / (double)stats.bytes_readn;
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double w_amp = (stats.bytes_readn == 0) ? 0.0
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: stats.bytes_written / (double)stats.bytes_readn;
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uint64_t bytes_read = stats.bytes_readn + stats.bytes_readnp1;
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uint64_t bytes_new = stats.bytes_written - stats.bytes_readnp1;
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double elapsed = (stats.micros + 1) / 1000000.0;
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snprintf(buf, len,
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"%4s %5d %8.0f %5.1f " /* Level, Files, Size(MB), Score */
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"%4s %5d/%-3d %8.0f %5.1f " /* Level, Files, Size(MB), Score */
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"%8.1f " /* Read(GB) */
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"%7.1f " /* Rn(GB) */
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"%8.1f " /* Rnp1(GB) */
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@ -63,10 +60,10 @@ void PrintLevelStats(char* buf, size_t len, const std::string& name,
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"%10.0f " /* Comp(sec) */
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"%9d " /* Comp(cnt) */
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"%8.3f " /* Avg(sec) */
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"%10.2f " /* Sta(sec) */
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"%10" PRIu64 " " /* Sta(cnt) */
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"%10.2f " /* Stall(sec) */
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"%10" PRIu64 " " /* Stall(cnt) */
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"%7.2f\n" /* Avg(ms) */,
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name.c_str(), num_files, total_file_size / kMB, score,
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name.c_str(), num_files, being_compacted, total_file_size / kMB, score,
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bytes_read / kGB,
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stats.bytes_readn / kGB,
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stats.bytes_readnp1 / kGB,
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@ -88,6 +85,7 @@ void PrintLevelStats(char* buf, size_t len, const std::string& name,
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stalls == 0 ? 0 : stall_us / 1000.0 / stalls);
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}
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}
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DBPropertyType GetPropertyType(const Slice& property) {
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@ -102,6 +100,10 @@ DBPropertyType GetPropertyType(const Slice& property) {
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return kLevelStats;
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} else if (in == "stats") {
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return kStats;
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} else if (in == "cfstats") {
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return kCFStats;
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} else if (in == "dbstats") {
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return kDBStats;
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} else if (in == "sstables") {
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return kSsTables;
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} else if (in == "num-immutable-mem-table") {
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@ -159,223 +161,20 @@ bool InternalStats::GetProperty(DBPropertyType property_type,
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return true;
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}
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case kStats: {
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char buf[1000];
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uint64_t wal_bytes = 0;
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uint64_t wal_synced = 0;
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uint64_t user_bytes_written = 0;
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uint64_t write_other = 0;
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uint64_t write_self = 0;
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uint64_t write_with_wal = 0;
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uint64_t micros_up = env_->NowMicros() - started_at_;
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// Add "+1" to make sure seconds_up is > 0 and avoid NaN later
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double seconds_up = (micros_up + 1) / 1000000.0;
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uint64_t total_slowdown = 0;
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uint64_t total_slowdown_count = 0;
|
||||
uint64_t interval_bytes_written = 0;
|
||||
uint64_t interval_bytes_read = 0;
|
||||
uint64_t interval_bytes_new = 0;
|
||||
double interval_seconds_up = 0;
|
||||
|
||||
if (statistics_) {
|
||||
wal_bytes = statistics_->getTickerCount(WAL_FILE_BYTES);
|
||||
wal_synced = statistics_->getTickerCount(WAL_FILE_SYNCED);
|
||||
user_bytes_written = statistics_->getTickerCount(BYTES_WRITTEN);
|
||||
write_other = statistics_->getTickerCount(WRITE_DONE_BY_OTHER);
|
||||
write_self = statistics_->getTickerCount(WRITE_DONE_BY_SELF);
|
||||
write_with_wal = statistics_->getTickerCount(WRITE_WITH_WAL);
|
||||
if (!GetProperty(kCFStats, "rocksdb.cfstats", value, cfd)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
PrintLevelStatsHeader(buf, sizeof(buf));
|
||||
value->append(buf);
|
||||
|
||||
CompactionStats stats_total(0);
|
||||
int total_files = 0;
|
||||
double total_file_size = 0;
|
||||
uint64_t total_stalls = 0;
|
||||
double total_stall_us = 0;
|
||||
int level_printed = 0;
|
||||
for (int level = 0; level < number_levels_; level++) {
|
||||
int files = current->NumLevelFiles(level);
|
||||
total_files += files;
|
||||
if (stats_[level].micros > 0 || files > 0) {
|
||||
++level_printed;
|
||||
uint64_t stalls = level == 0 ? (stall_counts_[LEVEL0_SLOWDOWN] +
|
||||
stall_counts_[LEVEL0_NUM_FILES] +
|
||||
stall_counts_[MEMTABLE_COMPACTION])
|
||||
: stall_leveln_slowdown_count_[level];
|
||||
|
||||
double stall_us = level == 0 ? (stall_micros_[LEVEL0_SLOWDOWN] +
|
||||
stall_micros_[LEVEL0_NUM_FILES] +
|
||||
stall_micros_[MEMTABLE_COMPACTION])
|
||||
: stall_leveln_slowdown_[level];
|
||||
|
||||
stats_total.Add(stats_[level]);
|
||||
total_file_size += current->NumLevelBytes(level);
|
||||
total_stall_us += stall_us;
|
||||
total_stalls += stalls;
|
||||
total_slowdown += stall_leveln_slowdown_[level];
|
||||
total_slowdown_count += stall_leveln_slowdown_count_[level];
|
||||
double score = current->NumLevelBytes(level) /
|
||||
cfd->compaction_picker()->MaxBytesForLevel(level);
|
||||
PrintLevelStats(buf, sizeof(buf), "L" + std::to_string(level), files,
|
||||
current->NumLevelBytes(level), score, stall_us, stalls,
|
||||
stats_[level]);
|
||||
value->append(buf);
|
||||
}
|
||||
if (!GetProperty(kDBStats, "rocksdb.dbstats", value, cfd)) {
|
||||
return false;
|
||||
}
|
||||
// Stats summary across levels
|
||||
if (level_printed > 1) {
|
||||
PrintLevelStats(buf, sizeof(buf), "Sum", total_files, total_file_size,
|
||||
0, total_stall_us, total_stalls, stats_total);
|
||||
value->append(buf);
|
||||
}
|
||||
|
||||
uint64_t total_bytes_read =
|
||||
stats_total.bytes_readn + stats_total.bytes_readnp1;
|
||||
uint64_t total_bytes_written = stats_total.bytes_written;
|
||||
|
||||
interval_bytes_new = user_bytes_written - last_stats_.ingest_bytes_;
|
||||
interval_bytes_read =
|
||||
total_bytes_read - last_stats_.compaction_bytes_read_;
|
||||
interval_bytes_written =
|
||||
total_bytes_written - last_stats_.compaction_bytes_written_;
|
||||
interval_seconds_up = seconds_up - last_stats_.seconds_up_;
|
||||
|
||||
snprintf(buf, sizeof(buf), "\nUptime(secs): %.1f total, %.1f interval\n",
|
||||
seconds_up, interval_seconds_up);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Writes cumulative: %llu total, %llu batches, "
|
||||
"%.1f per batch, %.2f ingest GB\n",
|
||||
(unsigned long long)(write_other + write_self),
|
||||
(unsigned long long)write_self,
|
||||
(write_other + write_self) / (double)(write_self + 1),
|
||||
user_bytes_written / kGB);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"WAL cumulative: %llu WAL writes, %llu WAL syncs, "
|
||||
"%.2f writes per sync, %.2f GB written\n",
|
||||
(unsigned long long)write_with_wal,
|
||||
(unsigned long long)wal_synced,
|
||||
write_with_wal / (double)(wal_synced + 1),
|
||||
wal_bytes / kGB);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Compaction IO cumulative (GB): "
|
||||
"%.2f new, %.2f read, %.2f write, %.2f read+write\n",
|
||||
user_bytes_written / kGB,
|
||||
total_bytes_read / kGB,
|
||||
total_bytes_written / kGB,
|
||||
(total_bytes_read + total_bytes_written) / kGB);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(
|
||||
buf, sizeof(buf),
|
||||
"Compaction IO cumulative (MB/sec): "
|
||||
"%.1f new, %.1f read, %.1f write, %.1f read+write\n",
|
||||
user_bytes_written / kMB / seconds_up,
|
||||
total_bytes_read / kMB / seconds_up,
|
||||
total_bytes_written / kMB / seconds_up,
|
||||
(total_bytes_read + total_bytes_written) / kMB / seconds_up);
|
||||
value->append(buf);
|
||||
|
||||
// +1 to avoid divide by 0 and NaN
|
||||
snprintf(
|
||||
buf, sizeof(buf),
|
||||
"Amplification cumulative: %.1f write, %.1f compaction\n",
|
||||
(double)(total_bytes_written + wal_bytes) / (user_bytes_written + 1),
|
||||
(double)(total_bytes_written + total_bytes_read + wal_bytes) /
|
||||
(user_bytes_written + 1));
|
||||
value->append(buf);
|
||||
|
||||
uint64_t interval_write_other = write_other - last_stats_.write_other_;
|
||||
uint64_t interval_write_self = write_self - last_stats_.write_self_;
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Writes interval: %llu total, %llu batches, "
|
||||
"%.1f per batch, %.1f ingest MB\n",
|
||||
(unsigned long long)(interval_write_other + interval_write_self),
|
||||
(unsigned long long)interval_write_self,
|
||||
(double)(interval_write_other + interval_write_self) /
|
||||
(interval_write_self + 1),
|
||||
(user_bytes_written - last_stats_.ingest_bytes_) / kMB);
|
||||
value->append(buf);
|
||||
|
||||
uint64_t interval_write_with_wal =
|
||||
write_with_wal - last_stats_.write_with_wal_;
|
||||
|
||||
uint64_t interval_wal_synced = wal_synced - last_stats_.wal_synced_;
|
||||
uint64_t interval_wal_bytes = wal_bytes - last_stats_.wal_bytes_;
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"WAL interval: %llu WAL writes, %llu WAL syncs, "
|
||||
"%.2f writes per sync, %.2f MB written\n",
|
||||
(unsigned long long)interval_write_with_wal,
|
||||
(unsigned long long)interval_wal_synced,
|
||||
interval_write_with_wal / (double)(interval_wal_synced + 1),
|
||||
interval_wal_bytes / kGB);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Compaction IO interval (MB): "
|
||||
"%.2f new, %.2f read, %.2f write, %.2f read+write\n",
|
||||
interval_bytes_new / kMB, interval_bytes_read / kMB,
|
||||
interval_bytes_written / kMB,
|
||||
(interval_bytes_read + interval_bytes_written) / kMB);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Compaction IO interval (MB/sec): "
|
||||
"%.1f new, %.1f read, %.1f write, %.1f read+write\n",
|
||||
interval_bytes_new / kMB / interval_seconds_up,
|
||||
interval_bytes_read / kMB / interval_seconds_up,
|
||||
interval_bytes_written / kMB / interval_seconds_up,
|
||||
(interval_bytes_read + interval_bytes_written) / kMB /
|
||||
interval_seconds_up);
|
||||
value->append(buf);
|
||||
|
||||
// +1 to avoid divide by 0 and NaN
|
||||
snprintf(
|
||||
buf, sizeof(buf),
|
||||
"Amplification interval: %.1f write, %.1f compaction\n",
|
||||
(double)(interval_bytes_written + interval_wal_bytes) /
|
||||
(interval_bytes_new + 1),
|
||||
(double)(interval_bytes_written + interval_bytes_read + interval_wal_bytes) /
|
||||
(interval_bytes_new + 1));
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Stalls(secs): %.3f level0_slowdown, %.3f level0_numfiles, "
|
||||
"%.3f memtable_compaction, %.3f leveln_slowdown\n",
|
||||
stall_micros_[LEVEL0_SLOWDOWN] / 1000000.0,
|
||||
stall_micros_[LEVEL0_NUM_FILES] / 1000000.0,
|
||||
stall_micros_[MEMTABLE_COMPACTION] / 1000000.0,
|
||||
total_slowdown / 1000000.0);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Stalls(count): %lu level0_slowdown, %lu level0_numfiles, "
|
||||
"%lu memtable_compaction, %lu leveln_slowdown\n",
|
||||
(unsigned long)stall_counts_[LEVEL0_SLOWDOWN],
|
||||
(unsigned long)stall_counts_[LEVEL0_NUM_FILES],
|
||||
(unsigned long)stall_counts_[MEMTABLE_COMPACTION],
|
||||
(unsigned long)total_slowdown_count);
|
||||
value->append(buf);
|
||||
|
||||
last_stats_.compaction_bytes_read_ = total_bytes_read;
|
||||
last_stats_.compaction_bytes_written_ = total_bytes_written;
|
||||
last_stats_.ingest_bytes_ = user_bytes_written;
|
||||
last_stats_.seconds_up_ = seconds_up;
|
||||
last_stats_.wal_bytes_ = wal_bytes;
|
||||
last_stats_.wal_synced_ = wal_synced;
|
||||
last_stats_.write_with_wal_ = write_with_wal;
|
||||
last_stats_.write_other_ = write_other;
|
||||
last_stats_.write_self_ = write_self;
|
||||
|
||||
return true;
|
||||
}
|
||||
case kCFStats: {
|
||||
DumpCFStats(value, cfd);
|
||||
return true;
|
||||
}
|
||||
case kDBStats: {
|
||||
DumpDBStats(value);
|
||||
return true;
|
||||
}
|
||||
case kSsTables:
|
||||
@ -414,4 +213,212 @@ bool InternalStats::GetProperty(DBPropertyType property_type,
|
||||
}
|
||||
}
|
||||
|
||||
void InternalStats::DumpDBStats(std::string* value) {
|
||||
char buf[1000];
|
||||
// DB-level stats, only available from default column family
|
||||
double seconds_up = (env_->NowMicros() - started_at_ + 1) / 1000000.0;
|
||||
double interval_seconds_up = seconds_up - db_stats_snapshot_.seconds_up;
|
||||
snprintf(buf, sizeof(buf),
|
||||
"\n** DB Stats **\nUptime(secs): %.1f total, %.1f interval\n",
|
||||
seconds_up, interval_seconds_up);
|
||||
value->append(buf);
|
||||
// Cumulative
|
||||
uint64_t user_bytes_written = db_stats_[InternalStats::BYTES_WRITTEN];
|
||||
uint64_t write_other = db_stats_[InternalStats::WRITE_DONE_BY_OTHER];
|
||||
uint64_t write_self = db_stats_[InternalStats::WRITE_DONE_BY_SELF];
|
||||
uint64_t wal_bytes = db_stats_[InternalStats::WAL_FILE_BYTES];
|
||||
uint64_t wal_synced = db_stats_[InternalStats::WAL_FILE_SYNCED];
|
||||
uint64_t write_with_wal = db_stats_[InternalStats::WRITE_WITH_WAL];
|
||||
// Data
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Cumulative writes: %" PRIu64 " writes, %" PRIu64 " batches, "
|
||||
"%.1f writes per batch, %.2f GB user ingest\n",
|
||||
write_other + write_self, write_self,
|
||||
(write_other + write_self) / static_cast<double>(write_self + 1),
|
||||
user_bytes_written / kGB);
|
||||
value->append(buf);
|
||||
// WAL
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Cumulative WAL: %" PRIu64 " writes, %" PRIu64 " syncs, "
|
||||
"%.2f writes per sync, %.2f GB written\n",
|
||||
write_with_wal, wal_synced,
|
||||
write_with_wal / static_cast<double>(wal_synced + 1),
|
||||
wal_bytes / kGB);
|
||||
value->append(buf);
|
||||
|
||||
// Interval
|
||||
uint64_t interval_write_other = write_other - db_stats_snapshot_.write_other;
|
||||
uint64_t interval_write_self = write_self - db_stats_snapshot_.write_self;
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Interval writes: %" PRIu64 " writes, %" PRIu64 " batches, "
|
||||
"%.1f writes per batch, %.1f MB user ingest\n",
|
||||
interval_write_other + interval_write_self,
|
||||
interval_write_self,
|
||||
static_cast<double>(interval_write_other + interval_write_self) /
|
||||
(interval_write_self + 1),
|
||||
(user_bytes_written - db_stats_snapshot_.ingest_bytes) / kMB);
|
||||
value->append(buf);
|
||||
|
||||
uint64_t interval_write_with_wal =
|
||||
write_with_wal - db_stats_snapshot_.write_with_wal;
|
||||
uint64_t interval_wal_synced = wal_synced - db_stats_snapshot_.wal_synced;
|
||||
uint64_t interval_wal_bytes = wal_bytes - db_stats_snapshot_.wal_bytes;
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Interval WAL: %" PRIu64 " writes, %" PRIu64 " syncs, "
|
||||
"%.2f writes per sync, %.2f MB written\n",
|
||||
interval_write_with_wal,
|
||||
interval_wal_synced,
|
||||
interval_write_with_wal /
|
||||
static_cast<double>(interval_wal_synced + 1),
|
||||
interval_wal_bytes / kGB);
|
||||
value->append(buf);
|
||||
|
||||
db_stats_snapshot_.seconds_up = seconds_up;
|
||||
db_stats_snapshot_.ingest_bytes = user_bytes_written;
|
||||
db_stats_snapshot_.write_other = write_other;
|
||||
db_stats_snapshot_.write_self = write_self;
|
||||
db_stats_snapshot_.wal_bytes = wal_bytes;
|
||||
db_stats_snapshot_.wal_synced = wal_synced;
|
||||
db_stats_snapshot_.write_with_wal = write_with_wal;
|
||||
}
|
||||
|
||||
void InternalStats::DumpCFStats(std::string* value, ColumnFamilyData* cfd) {
|
||||
Version* current = cfd->current();
|
||||
|
||||
int num_levels_to_check =
|
||||
(cfd->options()->compaction_style != kCompactionStyleUniversal &&
|
||||
cfd->options()->compaction_style != kCompactionStyleFIFO)
|
||||
? current->NumberLevels() - 1
|
||||
: 1;
|
||||
// Compaction scores are sorted base on its value. Restore them to the
|
||||
// level order
|
||||
std::vector<double> compaction_score(number_levels_, 0);
|
||||
for (int i = 0; i < num_levels_to_check; ++i) {
|
||||
compaction_score[current->compaction_level_[i]] =
|
||||
current->compaction_score_[i];
|
||||
}
|
||||
// Count # of files being compacted for each level
|
||||
std::vector<int> files_being_compacted(number_levels_, 0);
|
||||
for (int level = 0; level < num_levels_to_check; ++level) {
|
||||
for (auto* f : current->files_[level]) {
|
||||
if (f->being_compacted) {
|
||||
++files_being_compacted[level];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
char buf[1000];
|
||||
// Per-ColumnFamily stats
|
||||
PrintLevelStatsHeader(buf, sizeof(buf), cfd->GetName());
|
||||
value->append(buf);
|
||||
|
||||
CompactionStats stats_sum(0);
|
||||
int total_files = 0;
|
||||
int total_files_being_compacted = 0;
|
||||
double total_file_size = 0;
|
||||
uint64_t total_slowdown_soft = 0;
|
||||
uint64_t total_slowdown_count_soft = 0;
|
||||
uint64_t total_slowdown_hard = 0;
|
||||
uint64_t total_slowdown_count_hard = 0;
|
||||
uint64_t total_stall_count = 0;
|
||||
double total_stall_us = 0;
|
||||
for (int level = 0; level < number_levels_; level++) {
|
||||
int files = current->NumLevelFiles(level);
|
||||
total_files += files;
|
||||
total_files_being_compacted += files_being_compacted[level];
|
||||
if (comp_stats_[level].micros > 0 || files > 0) {
|
||||
uint64_t stalls = level == 0 ?
|
||||
(cf_stats_count_[LEVEL0_SLOWDOWN] +
|
||||
cf_stats_count_[LEVEL0_NUM_FILES] +
|
||||
cf_stats_count_[MEMTABLE_COMPACTION])
|
||||
: (stall_leveln_slowdown_count_soft_[level] +
|
||||
stall_leveln_slowdown_count_hard_[level]);
|
||||
|
||||
double stall_us = level == 0 ?
|
||||
(cf_stats_value_[LEVEL0_SLOWDOWN] +
|
||||
cf_stats_value_[LEVEL0_NUM_FILES] +
|
||||
cf_stats_value_[MEMTABLE_COMPACTION])
|
||||
: (stall_leveln_slowdown_soft_[level] +
|
||||
stall_leveln_slowdown_hard_[level]);
|
||||
|
||||
stats_sum.Add(comp_stats_[level]);
|
||||
total_file_size += current->NumLevelBytes(level);
|
||||
total_stall_us += stall_us;
|
||||
total_stall_count += stalls;
|
||||
total_slowdown_soft += stall_leveln_slowdown_soft_[level];
|
||||
total_slowdown_count_soft += stall_leveln_slowdown_count_soft_[level];
|
||||
total_slowdown_hard += stall_leveln_slowdown_hard_[level];
|
||||
total_slowdown_count_hard += stall_leveln_slowdown_count_hard_[level];
|
||||
int64_t bytes_read = comp_stats_[level].bytes_readn +
|
||||
comp_stats_[level].bytes_readnp1;
|
||||
double rw_amp = (comp_stats_[level].bytes_readn == 0) ? 0.0
|
||||
: (comp_stats_[level].bytes_written + bytes_read) /
|
||||
static_cast<double>(comp_stats_[level].bytes_readn);
|
||||
double w_amp = (comp_stats_[level].bytes_readn == 0) ? 0.0
|
||||
: comp_stats_[level].bytes_written /
|
||||
static_cast<double>(comp_stats_[level].bytes_readn);
|
||||
PrintLevelStats(buf, sizeof(buf), "L" + std::to_string(level),
|
||||
files, files_being_compacted[level], current->NumLevelBytes(level),
|
||||
compaction_score[level], rw_amp, w_amp, stall_us, stalls,
|
||||
comp_stats_[level]);
|
||||
value->append(buf);
|
||||
}
|
||||
}
|
||||
uint64_t curr_ingest = cf_stats_value_[BYTES_FLUSHED];
|
||||
// Cumulative summary
|
||||
double rw_amp = (stats_sum.bytes_written + stats_sum.bytes_readn +
|
||||
stats_sum.bytes_readnp1) / static_cast<double>(curr_ingest + 1);
|
||||
double w_amp = stats_sum.bytes_written / static_cast<double>(curr_ingest + 1);
|
||||
// Stats summary across levels
|
||||
PrintLevelStats(buf, sizeof(buf), "Sum", total_files,
|
||||
total_files_being_compacted, total_file_size, 0, rw_amp, w_amp,
|
||||
total_stall_us, total_stall_count, stats_sum);
|
||||
value->append(buf);
|
||||
// Interval summary
|
||||
uint64_t interval_ingest =
|
||||
curr_ingest - cf_stats_snapshot_.ingest_bytes + 1;
|
||||
CompactionStats interval_stats(stats_sum);
|
||||
interval_stats.Subtract(cf_stats_snapshot_.comp_stats);
|
||||
rw_amp = (interval_stats.bytes_written +
|
||||
interval_stats.bytes_readn + interval_stats.bytes_readnp1) /
|
||||
static_cast<double>(interval_ingest);
|
||||
w_amp = interval_stats.bytes_written / static_cast<double>(interval_ingest);
|
||||
PrintLevelStats(buf, sizeof(buf), "Int", 0, 0, 0, 0,
|
||||
rw_amp, w_amp, total_stall_us - cf_stats_snapshot_.stall_us,
|
||||
total_stall_count - cf_stats_snapshot_.stall_count, interval_stats);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Flush(GB): accumulative %.3f, interval %.3f\n",
|
||||
curr_ingest / kGB, interval_ingest / kGB);
|
||||
value->append(buf);
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Stalls(secs): %.3f level0_slowdown, %.3f level0_numfiles, "
|
||||
"%.3f memtable_compaction, %.3f leveln_slowdown_soft, "
|
||||
"%.3f leveln_slowdown_hard\n",
|
||||
cf_stats_value_[LEVEL0_SLOWDOWN] / 1000000.0,
|
||||
cf_stats_value_[LEVEL0_NUM_FILES] / 1000000.0,
|
||||
cf_stats_value_[MEMTABLE_COMPACTION] / 1000000.0,
|
||||
total_slowdown_soft / 1000000.0,
|
||||
total_slowdown_hard / 1000000.0);
|
||||
value->append(buf);
|
||||
|
||||
snprintf(buf, sizeof(buf),
|
||||
"Stalls(count): %" PRIu64 " level0_slowdown, "
|
||||
"%" PRIu64 " level0_numfiles, %" PRIu64 " memtable_compaction, "
|
||||
"%" PRIu64 " leveln_slowdown_soft, "
|
||||
"%" PRIu64 " leveln_slowdown_hard\n",
|
||||
cf_stats_count_[LEVEL0_SLOWDOWN],
|
||||
cf_stats_count_[LEVEL0_NUM_FILES],
|
||||
cf_stats_count_[MEMTABLE_COMPACTION],
|
||||
total_slowdown_count_soft, total_slowdown_count_hard);
|
||||
value->append(buf);
|
||||
|
||||
cf_stats_snapshot_.ingest_bytes = curr_ingest;
|
||||
cf_stats_snapshot_.comp_stats = stats_sum;
|
||||
cf_stats_snapshot_.stall_us = total_stall_us;
|
||||
cf_stats_snapshot_.stall_count = total_stall_count;
|
||||
}
|
||||
|
||||
} // namespace rocksdb
|
||||
|
||||
@ -9,8 +9,6 @@
|
||||
//
|
||||
|
||||
#pragma once
|
||||
#include "rocksdb/statistics.h"
|
||||
#include "util/statistics.h"
|
||||
#include "db/version_set.h"
|
||||
|
||||
#include <vector>
|
||||
@ -26,7 +24,9 @@ class DBImpl;
|
||||
enum DBPropertyType {
|
||||
kNumFilesAtLevel, // Number of files at a specific level
|
||||
kLevelStats, // Return number of files and total sizes of each level
|
||||
kStats, // Return general statitistics of DB
|
||||
kCFStats, // Return general statitistics of CF
|
||||
kDBStats, // Return general statitistics of DB
|
||||
kStats, // Return general statitistics of both DB and CF
|
||||
kSsTables, // Return a human readable string of current SST files
|
||||
kNumImmutableMemTable, // Return number of immutable mem tables
|
||||
kMemtableFlushPending, // Return 1 if mem table flushing is pending,
|
||||
@ -45,38 +45,66 @@ extern DBPropertyType GetPropertyType(const Slice& property);
|
||||
|
||||
class InternalStats {
|
||||
public:
|
||||
enum WriteStallType {
|
||||
enum InternalCFStatsType {
|
||||
LEVEL0_SLOWDOWN,
|
||||
MEMTABLE_COMPACTION,
|
||||
LEVEL0_NUM_FILES,
|
||||
WRITE_STALLS_ENUM_MAX,
|
||||
BYTES_FLUSHED,
|
||||
INTERNAL_CF_STATS_ENUM_MAX,
|
||||
};
|
||||
|
||||
InternalStats(int num_levels, Env* env, Statistics* statistics)
|
||||
: stats_(num_levels),
|
||||
stall_micros_(WRITE_STALLS_ENUM_MAX, 0),
|
||||
stall_counts_(WRITE_STALLS_ENUM_MAX, 0),
|
||||
stall_leveln_slowdown_(num_levels, 0),
|
||||
stall_leveln_slowdown_count_(num_levels, 0),
|
||||
enum InternalDBStatsType {
|
||||
WAL_FILE_BYTES,
|
||||
WAL_FILE_SYNCED,
|
||||
BYTES_WRITTEN,
|
||||
WRITE_DONE_BY_OTHER,
|
||||
WRITE_DONE_BY_SELF,
|
||||
WRITE_WITH_WAL,
|
||||
INTERNAL_DB_STATS_ENUM_MAX,
|
||||
};
|
||||
|
||||
InternalStats(int num_levels, Env* env)
|
||||
: db_stats_(INTERNAL_DB_STATS_ENUM_MAX),
|
||||
cf_stats_value_(INTERNAL_CF_STATS_ENUM_MAX),
|
||||
cf_stats_count_(INTERNAL_CF_STATS_ENUM_MAX),
|
||||
comp_stats_(num_levels),
|
||||
stall_leveln_slowdown_hard_(num_levels),
|
||||
stall_leveln_slowdown_count_hard_(num_levels),
|
||||
stall_leveln_slowdown_soft_(num_levels),
|
||||
stall_leveln_slowdown_count_soft_(num_levels),
|
||||
bg_error_count_(0),
|
||||
number_levels_(num_levels),
|
||||
statistics_(statistics),
|
||||
env_(env),
|
||||
started_at_(env->NowMicros()) {}
|
||||
started_at_(env->NowMicros()) {
|
||||
for (int i = 0; i< INTERNAL_DB_STATS_ENUM_MAX; ++i) {
|
||||
db_stats_[i] = 0;
|
||||
}
|
||||
for (int i = 0; i< INTERNAL_CF_STATS_ENUM_MAX; ++i) {
|
||||
cf_stats_value_[i] = 0;
|
||||
cf_stats_count_[i] = 0;
|
||||
}
|
||||
for (int i = 0; i < num_levels; ++i) {
|
||||
stall_leveln_slowdown_hard_[i] = 0;
|
||||
stall_leveln_slowdown_count_hard_[i] = 0;
|
||||
stall_leveln_slowdown_soft_[i] = 0;
|
||||
stall_leveln_slowdown_count_soft_[i] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
// Per level compaction stats. stats_[level] stores the stats for
|
||||
// Per level compaction stats. comp_stats_[level] stores the stats for
|
||||
// compactions that produced data for the specified "level".
|
||||
struct CompactionStats {
|
||||
uint64_t micros;
|
||||
|
||||
// Bytes read from level N during compaction between levels N and N+1
|
||||
int64_t bytes_readn;
|
||||
uint64_t bytes_readn;
|
||||
|
||||
// Bytes read from level N+1 during compaction between levels N and N+1
|
||||
int64_t bytes_readnp1;
|
||||
uint64_t bytes_readnp1;
|
||||
|
||||
// Total bytes written during compaction between levels N and N+1
|
||||
int64_t bytes_written;
|
||||
uint64_t bytes_written;
|
||||
|
||||
// Files read from level N during compaction between levels N and N+1
|
||||
int files_in_leveln;
|
||||
@ -100,6 +128,16 @@ class InternalStats {
|
||||
files_out_levelnp1(0),
|
||||
count(count) {}
|
||||
|
||||
explicit CompactionStats(const CompactionStats& c)
|
||||
: micros(c.micros),
|
||||
bytes_readn(c.bytes_readn),
|
||||
bytes_readnp1(c.bytes_readnp1),
|
||||
bytes_written(c.bytes_written),
|
||||
files_in_leveln(c.files_in_leveln),
|
||||
files_in_levelnp1(c.files_in_levelnp1),
|
||||
files_out_levelnp1(c.files_out_levelnp1),
|
||||
count(c.count) {}
|
||||
|
||||
void Add(const CompactionStats& c) {
|
||||
this->micros += c.micros;
|
||||
this->bytes_readn += c.bytes_readn;
|
||||
@ -110,20 +148,40 @@ class InternalStats {
|
||||
this->files_out_levelnp1 += c.files_out_levelnp1;
|
||||
this->count += c.count;
|
||||
}
|
||||
|
||||
void Subtract(const CompactionStats& c) {
|
||||
this->micros -= c.micros;
|
||||
this->bytes_readn -= c.bytes_readn;
|
||||
this->bytes_readnp1 -= c.bytes_readnp1;
|
||||
this->bytes_written -= c.bytes_written;
|
||||
this->files_in_leveln -= c.files_in_leveln;
|
||||
this->files_in_levelnp1 -= c.files_in_levelnp1;
|
||||
this->files_out_levelnp1 -= c.files_out_levelnp1;
|
||||
this->count -= c.count;
|
||||
}
|
||||
};
|
||||
|
||||
void AddCompactionStats(int level, const CompactionStats& stats) {
|
||||
stats_[level].Add(stats);
|
||||
comp_stats_[level].Add(stats);
|
||||
}
|
||||
|
||||
void RecordWriteStall(WriteStallType write_stall_type, uint64_t micros) {
|
||||
stall_micros_[write_stall_type] += micros;
|
||||
++stall_counts_[write_stall_type];
|
||||
void RecordLevelNSlowdown(int level, uint64_t micros, bool soft) {
|
||||
if (soft) {
|
||||
stall_leveln_slowdown_soft_[level] += micros;
|
||||
++stall_leveln_slowdown_count_soft_[level];
|
||||
} else {
|
||||
stall_leveln_slowdown_hard_[level] += micros;
|
||||
++stall_leveln_slowdown_count_hard_[level];
|
||||
}
|
||||
}
|
||||
|
||||
void RecordLevelNSlowdown(int level, uint64_t micros) {
|
||||
stall_leveln_slowdown_[level] += micros;
|
||||
++stall_leveln_slowdown_count_[level];
|
||||
void AddCFStats(InternalCFStatsType type, uint64_t value) {
|
||||
cf_stats_value_[type] += value;
|
||||
++cf_stats_count_[type];
|
||||
}
|
||||
|
||||
void AddDBStats(InternalDBStatsType type, uint64_t value) {
|
||||
db_stats_[type] += value;
|
||||
}
|
||||
|
||||
uint64_t GetBackgroundErrorCount() const { return bg_error_count_; }
|
||||
@ -134,42 +192,58 @@ class InternalStats {
|
||||
std::string* value, ColumnFamilyData* cfd);
|
||||
|
||||
private:
|
||||
std::vector<CompactionStats> stats_;
|
||||
void DumpDBStats(std::string* value);
|
||||
void DumpCFStats(std::string* value, ColumnFamilyData* cfd);
|
||||
|
||||
// Per-DB stats
|
||||
std::vector<uint64_t> db_stats_;
|
||||
// Per-ColumnFamily stats
|
||||
std::vector<uint64_t> cf_stats_value_;
|
||||
std::vector<uint64_t> cf_stats_count_;
|
||||
// Per-ColumnFamily/level compaction stats
|
||||
std::vector<CompactionStats> comp_stats_;
|
||||
// These count the number of microseconds for which MakeRoomForWrite stalls.
|
||||
std::vector<uint64_t> stall_leveln_slowdown_hard_;
|
||||
std::vector<uint64_t> stall_leveln_slowdown_count_hard_;
|
||||
std::vector<uint64_t> stall_leveln_slowdown_soft_;
|
||||
std::vector<uint64_t> stall_leveln_slowdown_count_soft_;
|
||||
|
||||
// Used to compute per-interval statistics
|
||||
struct StatsSnapshot {
|
||||
uint64_t compaction_bytes_read_; // Bytes read by compaction
|
||||
uint64_t compaction_bytes_written_; // Bytes written by compaction
|
||||
uint64_t ingest_bytes_; // Bytes written by user
|
||||
uint64_t wal_bytes_; // Bytes written to WAL
|
||||
uint64_t wal_synced_; // Number of times WAL is synced
|
||||
uint64_t write_with_wal_; // Number of writes that request WAL
|
||||
struct CFStatsSnapshot {
|
||||
// ColumnFamily-level stats
|
||||
CompactionStats comp_stats;
|
||||
uint64_t ingest_bytes; // Bytes written to L0
|
||||
uint64_t stall_us; // Stall time in micro-seconds
|
||||
uint64_t stall_count; // Stall count
|
||||
|
||||
CFStatsSnapshot()
|
||||
: comp_stats(0),
|
||||
ingest_bytes(0),
|
||||
stall_us(0),
|
||||
stall_count(0) {}
|
||||
} cf_stats_snapshot_;
|
||||
|
||||
struct DBStatsSnapshot {
|
||||
// DB-level stats
|
||||
uint64_t ingest_bytes; // Bytes written by user
|
||||
uint64_t wal_bytes; // Bytes written to WAL
|
||||
uint64_t wal_synced; // Number of times WAL is synced
|
||||
uint64_t write_with_wal; // Number of writes that request WAL
|
||||
// These count the number of writes processed by the calling thread or
|
||||
// another thread.
|
||||
uint64_t write_other_;
|
||||
uint64_t write_self_;
|
||||
double seconds_up_;
|
||||
uint64_t write_other;
|
||||
uint64_t write_self;
|
||||
double seconds_up;
|
||||
|
||||
StatsSnapshot()
|
||||
: compaction_bytes_read_(0),
|
||||
compaction_bytes_written_(0),
|
||||
ingest_bytes_(0),
|
||||
wal_bytes_(0),
|
||||
wal_synced_(0),
|
||||
write_with_wal_(0),
|
||||
write_other_(0),
|
||||
write_self_(0),
|
||||
seconds_up_(0) {}
|
||||
};
|
||||
|
||||
// Counters from the previous time per-interval stats were computed
|
||||
StatsSnapshot last_stats_;
|
||||
|
||||
// These count the number of microseconds for which MakeRoomForWrite stalls.
|
||||
std::vector<uint64_t> stall_micros_;
|
||||
std::vector<uint64_t> stall_counts_;
|
||||
std::vector<uint64_t> stall_leveln_slowdown_;
|
||||
std::vector<uint64_t> stall_leveln_slowdown_count_;
|
||||
DBStatsSnapshot()
|
||||
: ingest_bytes(0),
|
||||
wal_bytes(0),
|
||||
wal_synced(0),
|
||||
write_with_wal(0),
|
||||
write_other(0),
|
||||
write_self(0),
|
||||
seconds_up(0) {}
|
||||
} db_stats_snapshot_;
|
||||
|
||||
// Total number of background errors encountered. Every time a flush task
|
||||
// or compaction task fails, this counter is incremented. The failure can
|
||||
@ -178,10 +252,9 @@ class InternalStats {
|
||||
// or compaction will cause the counter to increase too.
|
||||
uint64_t bg_error_count_;
|
||||
|
||||
int number_levels_;
|
||||
Statistics* statistics_;
|
||||
const int number_levels_;
|
||||
Env* env_;
|
||||
uint64_t started_at_;
|
||||
const uint64_t started_at_;
|
||||
};
|
||||
|
||||
} // namespace rocksdb
|
||||
|
||||
@ -248,6 +248,7 @@ class Version {
|
||||
friend class UniversalCompactionPicker;
|
||||
friend class FIFOCompactionPicker;
|
||||
friend class ForwardIterator;
|
||||
friend class InternalStats;
|
||||
|
||||
class LevelFileNumIterator;
|
||||
class LevelFileIteratorState;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user