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Measure compaction time.

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Summary: just record time consumed in compaction

Test Plan: compile

Reviewers: dhruba

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D8781
This commit is contained in:
Abhishek Kona 2013-02-21 16:23:33 -08:00
parent 5024d72572
commit 959337ed5b
3 changed files with 6 additions and 3 deletions
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4
db/db_impl.cc
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@ -1690,7 +1690,9 @@ Status DBImpl::DoCompactionWork(CompactionState* compact) {
CompactionStats stats; CompactionStats stats;
stats.micros = env_->NowMicros() - start_micros - imm_micros; stats.micros = env_->NowMicros() - start_micros - imm_micros;
if (options_.statistics) {
options_.statistics->measureTime(COMPACTION_TIME, stats.micros);
}
stats.files_in_leveln = compact->compaction->num_input_files(0); stats.files_in_leveln = compact->compaction->num_input_files(0);
stats.files_in_levelnp1 = compact->compaction->num_input_files(1); stats.files_in_levelnp1 = compact->compaction->num_input_files(1);

2
db/db_impl.h
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@ -275,7 +275,7 @@ class DBImpl : public DB {
// Per level compaction stats. stats_[level] stores the stats for // Per level compaction stats. stats_[level] stores the stats for
// compactions that produced data for the specified "level". // compactions that produced data for the specified "level".
struct CompactionStats { struct CompactionStats {
int64_t micros; uint64_t micros;
// Bytes read from level N during compaction between levels N and N+1 // Bytes read from level N during compaction between levels N and N+1
int64_t bytes_readn; int64_t bytes_readn;

3
include/leveldb/statistics.h
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@ -49,7 +49,8 @@ enum Tickers {
enum Histograms { enum Histograms {
DB_GET = 0, DB_GET = 0,
DB_WRITE = 1, DB_WRITE = 1,
HISTOGRAM_ENUM_MAX = 2, COMPACTION_TIME = 2,
HISTOGRAM_ENUM_MAX = 3,
}; };
struct HistogramData { struct HistogramData {