andreacavalli/rocksdb
0
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
f2f4c8072f
rocksdb/db
History
Haobo Xu f2f4c8072f [RocksDB] Added nano second stopwatch and new perf counters to track block read cost 
Summary: The pupose of this diff is to expose per user-call level precise timing of block read, so that we can answer questions like: a Get() costs me 100ms, is that somehow related to loading blocks from file system, or sth else? We will answer that with EXACTLY how many blocks have been read, how much time was spent on transfering the bytes from os, how much time was spent on checksum verification and how much time was spent on block decompression, just for that one Get. A nano second stopwatch was introduced to track time with higher precision. The cost/precision of the stopwatch is also measured in unit-test. On my dev box, retrieving one time instance costs about 30ns, on average. The deviation of timing results is good enough to track 100ns-1us level events. And the overhead could be safely ignored for 100us level events (10000 instances/s), for example, a viewstate thrift call.

Test Plan: perf_context_test, also testing with viewstate shadow traffic.

Reviewers: dhruba

Reviewed By: dhruba

CC: leveldb, xjin

Differential Revision: https://reviews.facebook.net/D12351
2013-09-07 21:14:54 -07:00
..
.nfs00000000066c9ebb00000002 Enhance db_bench 2013-03-14 16:00:23 -07:00
builder.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
builder.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
c_test.c Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
c.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
corruption_test.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
db_bench.cc Internal/user key bug fix. 2013-08-23 14:49:57 -07:00
db_filesnapshot.cc Return pathname relative to db dir in LogFile and cleanup AppendSortedWalsOfType 2013-09-04 13:44:43 -07:00
db_impl_readonly.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
db_impl_readonly.h New ldb command to convert compaction style 2013-09-04 13:13:08 -07:00
db_impl.cc Flush was hanging because the configured options specified that more than 1 memtable need to be merged. 2013-09-06 16:28:33 -07:00
db_impl.h New ldb command to convert compaction style 2013-09-04 13:13:08 -07:00
db_iter.cc An iterator may automatically invoke reseeks. 2013-09-06 11:50:53 -07:00
db_iter.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
db_statistics.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
db_stats_logger.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
db_test.cc Flush was hanging because the configured options specified that more than 1 memtable need to be merged. 2013-09-06 16:28:33 -07:00
dbformat_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
dbformat.cc [RocksDB] Added nano second stopwatch and new perf counters to track block read cost 2013-09-07 21:14:54 -07:00
dbformat.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
deletefile_test.cc Fix build caused by DeleteFile not tolerating / at the beginning 2013-09-01 17:59:13 -07:00
filename_test.cc Added meta-database support. 2012-12-17 11:26:59 -08:00
filename.cc Return pathname relative to db dir in LogFile and cleanup AppendSortedWalsOfType 2013-09-04 13:44:43 -07:00
filename.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
log_format.h Fixed sign-comparison in rocksdb code-base and fixed Makefile 2013-03-19 14:35:23 -07:00
log_reader.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
log_reader.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
log_test.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
log_writer.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
log_writer.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
memtable.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
memtable.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
memtablelist.cc Flush was hanging because the configured options specified that more than 1 memtable need to be merged. 2013-09-06 16:28:33 -07:00
memtablelist.h Flush was hanging because the configured options specified that more than 1 memtable need to be merged. 2013-09-06 16:28:33 -07:00
merge_helper.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
merge_helper.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
merge_operator.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
merge_test.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
perf_context_test.cc [RocksDB] Added nano second stopwatch and new perf counters to track block read cost 2013-09-07 21:14:54 -07:00
prefix_filter_iterator.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
repair.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
skiplist_test.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
skiplist.h Make arena block size configurable 2013-07-31 12:42:23 -07:00
snapshot.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
table_cache.cc Introduced a new flag non_blocking_io in ReadOptions. 2013-08-28 10:49:14 -07:00
table_cache.h Introduced a new flag non_blocking_io in ReadOptions. 2013-08-28 10:49:14 -07:00
transaction_log_impl.cc API for getting archived log files 2013-08-19 13:37:04 -07:00
transaction_log_impl.h Return pathname relative to db dir in LogFile and cleanup AppendSortedWalsOfType 2013-09-04 13:44:43 -07:00
version_edit_test.cc Reduce write amplification by merging files in L0 back into L0 2013-06-30 20:07:04 -07:00
version_edit.cc Merge remote-tracking branch 'origin' into performance 2013-08-12 09:58:50 -07:00
version_edit.h Merge remote-tracking branch 'origin' into performance 2013-08-12 09:58:50 -07:00
version_set_reduce_num_levels.cc Fix valgrind errors in rocksdb tests: auto_roll_logger_test, reduce_levels_test 2013-03-12 16:03:16 -07:00
version_set_test.cc Codemod NULL to nullptr 2013-02-28 18:04:58 -08:00
version_set.cc Fix build caused by DeleteFile not tolerating / at the beginning 2013-09-01 17:59:13 -07:00
version_set.h Introduced a new flag non_blocking_io in ReadOptions. 2013-08-28 10:49:14 -07:00
write_batch_internal.h Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
write_batch_test.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00
write_batch.cc Replace include/leveldb with include/rocksdb. 2013-08-23 10:51:00 -07:00