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[Rocksdb] measure table open io in a histogram

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Summary: Table is setup for compaction using Table::SetupForCompaction. So read block calls can be differentiated b/w Gets/Compaction. Use this and measure times.

Test Plan: db_bench --statistics=1

Reviewers: dhruba, haobo

Reviewed By: haobo

CC: leveldb, MarkCallaghan

Differential Revision: https://reviews.facebook.net/D11217
This commit is contained in:
Abhishek Kona
2013-06-13 17:25:09 -07:00
parent 0c2a2dd5e8
commit 7a5f71d19a
4 changed files with 36 additions and 12 deletions
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9
include/leveldb/statistics.h
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@@ -103,10 +103,13 @@ enum Histograms {
// TIME SPENT IN IO DURING TABLE OPEN
TABLE_OPEN_IO_MICROS = 7,
DB_MULTIGET = 8,
HISTOGRAM_ENUM_MAX = 9
READ_BLOCK_COMPACTION_MICROS = 9,
READ_BLOCK_GET_MICROS = 10,
HISTOGRAM_ENUM_MAX = 11
};
const std::vector<std::pair<Histograms, std::string>> HistogramsNameMap = {
// Over 80 char by choice
std::make_pair(DB_GET, "rocksdb.db.get.micros"),
std::make_pair(DB_WRITE, "rocksdb.db.write.micros"),
std::make_pair(COMPACTION_TIME, "rocksdb.compaction.times.micros"),
@@ -115,7 +118,9 @@ const std::vector<std::pair<Histograms, std::string>> HistogramsNameMap = {
std::make_pair(WAL_FILE_SYNC_MICROS, "rocksdb.wal.file.sync.micros"),
std::make_pair(MANIFEST_FILE_SYNC_MICROS, "rocksdb.manifest.file.sync.micros"),
std::make_pair(TABLE_OPEN_IO_MICROS, "rocksdb.table.open.io.micros"),
std::make_pair(DB_MULTIGET, "rocksdb.db.multiget.micros")
std::make_pair(DB_MULTIGET, "rocksdb.db.multiget.micros"),
std::make_pair(READ_BLOCK_COMPACTION_MICROS, "rocksdb.read.block.compaction.micros"),
std::make_pair(READ_BLOCK_GET_MICROS, "rocksdb.read.block.get.micros")
};
struct HistogramData {