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Merge pull request #967 from SherlockNoMad/ValueSize

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Add histogram for value size per operation
This commit is contained in:
Siying Dong 2016-02-01 17:59:08 -08:00
commit 7b943da1b2
2 changed files with 10 additions and 0 deletions
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3
db/db_impl.cc
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@ -3327,6 +3327,7 @@ Status DBImpl::GetImpl(const ReadOptions& read_options,
RecordTick(stats_, NUMBER_KEYS_READ);
RecordTick(stats_, BYTES_READ, value->size());
MeasureTime(stats_, BYTES_PER_READ, value->size());
}
return s;
}
@ -3437,6 +3438,7 @@ std::vector<Status> DBImpl::MultiGet(
RecordTick(stats_, NUMBER_MULTIGET_CALLS);
RecordTick(stats_, NUMBER_MULTIGET_KEYS_READ, num_keys);
RecordTick(stats_, NUMBER_MULTIGET_BYTES_READ, bytes_read);
MeasureTime(stats_, BYTES_PER_MULTIGET, bytes_read);
PERF_TIMER_STOP(get_post_process_time);
return stat_list;
@ -4321,6 +4323,7 @@ Status DBImpl::WriteImpl(const WriteOptions& write_options,
// Record statistics
RecordTick(stats_, NUMBER_KEYS_WRITTEN, total_count);
RecordTick(stats_, BYTES_WRITTEN, total_byte_size);
MeasureTime(stats_, BYTES_PER_WRITE, total_byte_size);
PERF_TIMER_STOP(write_pre_and_post_process_time);
if (write_options.disableWAL) {

7
include/rocksdb/statistics.h
View File

@ -280,6 +280,10 @@ enum Histograms : uint32_t {
SST_READ_MICROS,
// The number of subcompactions actually scheduled during a compaction
NUM_SUBCOMPACTIONS_SCHEDULED,
// Value size distribution in each operation
BYTES_PER_READ,
BYTES_PER_WRITE,
BYTES_PER_MULTIGET,
HISTOGRAM_ENUM_MAX, // TODO(ldemailly): enforce HistogramsNameMap match
};
@ -307,6 +311,9 @@ const std::vector<std::pair<Histograms, std::string>> HistogramsNameMap = {
{WRITE_STALL, "rocksdb.db.write.stall"},
{SST_READ_MICROS, "rocksdb.sst.read.micros"},
{NUM_SUBCOMPACTIONS_SCHEDULED, "rocksdb.num.subcompactions.scheduled"},
{BYTES_PER_READ, "rocksdb.bytes.per.read"},
{BYTES_PER_WRITE, "rocksdb.bytes.per.write"},
{BYTES_PER_MULTIGET, "rocksdb.bytes.per.multiget"},
};
struct HistogramData {