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Add histogram for DB_SEEK

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Summary: as title

Test Plan: make release

Reviewers: sdong, yhchiang

Reviewed By: yhchiang

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D21717
This commit is contained in:
Lei Jin 2014-08-13 15:56:37 -07:00
parent 5e642403a9
commit 5a5953b388
2 changed files with 4 additions and 0 deletions
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2
db/db_iter.cc
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@ -552,6 +552,8 @@ void DBIter::FindParseableKey(ParsedInternalKey* ikey, Direction direction) {
} }
void DBIter::Seek(const Slice& target) { void DBIter::Seek(const Slice& target) {
StopWatch sw(env_, statistics_, DB_SEEK);
saved_key_.Clear(); saved_key_.Clear();
// now savved_key is used to store internal key. // now savved_key is used to store internal key.
saved_key_.SetInternalKey(target, sequence_); saved_key_.SetInternalKey(target, sequence_);

2
include/rocksdb/statistics.h
View File

@ -219,6 +219,7 @@ enum Histograms : uint32_t {
HARD_RATE_LIMIT_DELAY_COUNT, HARD_RATE_LIMIT_DELAY_COUNT,
SOFT_RATE_LIMIT_DELAY_COUNT, SOFT_RATE_LIMIT_DELAY_COUNT,
NUM_FILES_IN_SINGLE_COMPACTION, NUM_FILES_IN_SINGLE_COMPACTION,
DB_SEEK,
HISTOGRAM_ENUM_MAX, HISTOGRAM_ENUM_MAX,
}; };
@ -241,6 +242,7 @@ const std::vector<std::pair<Histograms, std::string>> HistogramsNameMap = {
{ HARD_RATE_LIMIT_DELAY_COUNT, "rocksdb.hard.rate.limit.delay.count"}, { HARD_RATE_LIMIT_DELAY_COUNT, "rocksdb.hard.rate.limit.delay.count"},
{ SOFT_RATE_LIMIT_DELAY_COUNT, "rocksdb.soft.rate.limit.delay.count"}, { SOFT_RATE_LIMIT_DELAY_COUNT, "rocksdb.soft.rate.limit.delay.count"},
{ NUM_FILES_IN_SINGLE_COMPACTION, "rocksdb.numfiles.in.singlecompaction" }, { NUM_FILES_IN_SINGLE_COMPACTION, "rocksdb.numfiles.in.singlecompaction" },
{ DB_SEEK, "rocksdb.db.seek.micros" },
}; };
struct HistogramData { struct HistogramData {