5 Commits (625467a08a648f1ac8c715a4622df83e8f7fccaa)

Author	SHA1	Message	Date
Igor Canadi	08be1803ee	Fix bad performance in debug mode ... Summary: See github issue 574: https://github.com/facebook/rocksdb/issues/574 Basically when we're running in DEBUG mode we're calling `usleep(0)` on every mutex lock. I bisected the issue to https://reviews.facebook.net/D36963. Instead of calling sleep(0), this diff just avoids calling SleepForMicroseconds() when delay is not set. Test Plan: bpl=10485760;overlap=10;mcz=2;del=300000000;levels=2;ctrig=10000000; delay=10000000; stop=10000000; wbn=30; mbc=20; mb=1073741824;wbs=268435456; dds=1; sync=0; r=100000; t=1; vs=800; bs=65536; cs=1048576; of=500000; si=1000000; ./db_bench --benchmarks=fillrandom --disable_seek_compaction=1 --mmap_read=0 --statistics=1 --histogram=1 --num=$r --threads=$t --value_size=$vs --block_size=$bs --cache_size=$cs --bloom_bits=10 --cache_numshardbits=4 --open_files=$of --verify_checksum=1 --db=/tmp/rdb10test --sync=$sync --disable_wal=1 --compression_type=snappy --stats_interval=$si --compression_ratio=0.5 --disable_data_sync=$dds --write_buffer_size=$wbs --target_file_size_base=$mb --max_write_buffer_number=$wbn --max_background_compactions=$mbc --level0_file_num_compaction_trigger=$ctrig --level0_slowdown_writes_trigger=$delay --level0_stop_writes_trigger=$stop --num_levels=$levels --delete_obsolete_files_period_micros=$del --min_level_to_compress=$mcz --max_grandparent_overlap_factor=$overlap --stats_per_interval=1 --max_bytes_for_level_base=$bpl --memtablerep=vector --use_existing_db=0 --disable_auto_compactions=1 --source_compaction_factor=10000000 | grep ops Before: fillrandom : 117.525 micros/op 8508 ops/sec; 6.6 MB/s After: fillrandom : 1.283 micros/op 779502 ops/sec; 606.6 MB/s Reviewers: rven, yhchiang, sdong Reviewed By: sdong Subscribers: meyering, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D36963	10 years ago
Yueh-Hsuan Chiang	f0c36da6ee	Add thread_status_util_debug.cc back ... Summary: Add thread_status_util_debug.cc back as InstrumentedMutex related tests are using it to produce wait that can be reflected in the counter. Test Plan: ./perf_context_test export ROCKSDB_TESTS=MutexWaitStats ./db_test Reviewers: sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D33525	10 years ago
Yueh-Hsuan Chiang	e60bc99fe0	Allow GetThreadList to reflect flush activity. ... Summary: Allow GetThreadList to reflect flush activity. Test Plan: Developed ThreadStatusFlush test and updated ThreadStatusMultiCompaction test. ./db_test ./thread_list_test Reviewers: sdong, rven, igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D32871	10 years ago
Igor Canadi	0c4d1053df	Fix data race #5 ... Summary: TSAN complained that these are non-atomic reads and writes from different threads. Test Plan: TSAN no longer complains Reviewers: yhchiang, rven, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D32409	10 years ago
Yueh-Hsuan Chiang	c91cdd59c1	Allow GetThreadList() to indicate a thread is doing Compaction. ... Summary: Allow GetThreadList() to indicate a thread is doing Compaction. Test Plan: export ROCKSDB_TESTS=ThreadStatus ./db_test Reviewers: ljin, igor, sdong Reviewed By: sdong Subscribers: leveldb, dhruba, jonahcohen, rven Differential Revision: https://reviews.facebook.net/D30105	10 years ago