Revision aed7abbcca7574ed438c3b22e27db9bf249e8de3 authored by Xin Tong on 18 May 2018, 00:49:06 UTC, committed by Facebook Github Bot on 18 May 2018, 00:57:48 UTC
Summary: Running. TEST_TMPDIR=/dev/shm ./buck-out/gen/rocks/tools/rocks_db_bench --benchmarks=readwhilewriting --num=5000000 -benchmark_write_rate_limit=2000000 --threads=32 Collected esan data and reorder field. Accesses to 4th and 6th fields take majority of the access. Group them. Overall, this struct takes 10%+ of the total accesses in the program. (637773011/6107964986) ==2433831== class rocksdb::InlineSkipList ==2433831== size = 48, count = 637773011, ratio = 112412, array access = 0 ==2433831== # 0: offset = 0, size = 2, count = 455137, type = i16 ==2433831== # 1: offset = 2, size = 2, count = 6, type = i16 ==2433831== # 2: offset = 4, size = 4, count = 182303, type = i32 ==2433831== # 3: offset = 8, size = 8, count = 263953900, type = %"class.rocksdb::MemTableRep::KeyComparator"* ==2433831== # 4: offset = 16, size = 8, count = 136409, type = %"class.rocksdb::Allocator"* ==2433831== # 5: offset = 24, size = 8, count = 366628820, type = %"struct.rocksdb::InlineSkipList<const rocksdb::MemTableRep::KeyComparator &>::Node"* ==2433831== # 6: offset = 32, size = 4, count = 6280031, type = %"struct.std::atomic" = type { %"struct.std::__atomic_base" } ==2433831== # 7: offset = 40, size = 8, count = 136405, type = %"struct.rocksdb::InlineSkipList<const rocksdb::MemTableRep::KeyComparator &>::Splice"* ==2433831==EfficiencySanitizer: total struct field access count = 6107964986 Before re-ordering [trentxintong@devbig460.frc2 ~/fbsource/fbcode]$ fgrep readwhilewriting without-ro.log readwhilewriting : 0.036 micros/op 27545605 ops/sec; 26.8 MB/s (45954 of 5000000 found) readwhilewriting : 0.036 micros/op 28024240 ops/sec; 27.2 MB/s (43158 of 5000000 found) readwhilewriting : 0.037 micros/op 27345145 ops/sec; 27.1 MB/s (46725 of 5000000 found) readwhilewriting : 0.037 micros/op 27072588 ops/sec; 27.3 MB/s (42605 of 5000000 found) readwhilewriting : 0.034 micros/op 29578781 ops/sec; 28.3 MB/s (44294 of 5000000 found) readwhilewriting : 0.035 micros/op 28528304 ops/sec; 27.7 MB/s (44176 of 5000000 found) readwhilewriting : 0.037 micros/op 27075497 ops/sec; 26.5 MB/s (43763 of 5000000 found) readwhilewriting : 0.036 micros/op 28024117 ops/sec; 27.1 MB/s (40622 of 5000000 found) readwhilewriting : 0.037 micros/op 27078709 ops/sec; 27.6 MB/s (47774 of 5000000 found) readwhilewriting : 0.034 micros/op 29020689 ops/sec; 28.1 MB/s (45066 of 5000000 found) AVERAGE()=27.37 MB/s After re-ordering [trentxintong@devbig460.frc2 ~/fbsource/fbcode]$ fgrep readwhilewriting ro.log readwhilewriting : 0.036 micros/op 27542409 ops/sec; 27.7 MB/s (46163 of 5000000 found) readwhilewriting : 0.036 micros/op 28021148 ops/sec; 28.2 MB/s (46155 of 5000000 found) readwhilewriting : 0.036 micros/op 28021035 ops/sec; 27.3 MB/s (44039 of 5000000 found) readwhilewriting : 0.036 micros/op 27538659 ops/sec; 27.5 MB/s (46781 of 5000000 found) readwhilewriting : 0.036 micros/op 28028604 ops/sec; 27.6 MB/s (44689 of 5000000 found) readwhilewriting : 0.036 micros/op 27541452 ops/sec; 27.3 MB/s (43156 of 5000000 found) readwhilewriting : 0.034 micros/op 29041338 ops/sec; 28.8 MB/s (44895 of 5000000 found) readwhilewriting : 0.036 micros/op 27784974 ops/sec; 26.3 MB/s (39963 of 5000000 found) readwhilewriting : 0.036 micros/op 27538892 ops/sec; 28.1 MB/s (46570 of 5000000 found) readwhilewriting : 0.038 micros/op 26622473 ops/sec; 27.0 MB/s (43236 of 5000000 found) AVERAGE()=27.58 MB/s Closes https://github.com/facebook/rocksdb/pull/3855 Reviewed By: siying Differential Revision: D8048781 Pulled By: trentxintong fbshipit-source-id: bc9807a9845e2a92cb171ce1ecb5a2c8a51f1481
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File | Mode | Size |
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dump | ||
rdb | ||
CMakeLists.txt | -rw-r--r-- | 544 bytes |
Dockerfile | -rw-r--r-- | 81 bytes |
auto_sanity_test.sh | -rwxr-xr-x | 2.7 KB |
benchmark.sh | -rwxr-xr-x | 16.4 KB |
benchmark_leveldb.sh | -rwxr-xr-x | 5.1 KB |
blob_dump.cc | -rw-r--r-- | 3.3 KB |
check_format_compatible.sh | -rwxr-xr-x | 4.1 KB |
db_bench.cc | -rw-r--r-- | 813 bytes |
db_bench_tool.cc | -rw-r--r-- | 193.4 KB |
db_bench_tool_test.cc | -rw-r--r-- | 9.5 KB |
db_crashtest.py | -rw-r--r-- | 12.1 KB |
db_repl_stress.cc | -rw-r--r-- | 4.5 KB |
db_sanity_test.cc | -rw-r--r-- | 8.4 KB |
db_stress.cc | -rw-r--r-- | 104.0 KB |
dbench_monitor | -rwxr-xr-x | 2.6 KB |
generate_random_db.sh | -rwxr-xr-x | 734 bytes |
ldb.cc | -rw-r--r-- | 572 bytes |
ldb_cmd.cc | -rw-r--r-- | 96.3 KB |
ldb_cmd_impl.h | -rw-r--r-- | 14.1 KB |
ldb_cmd_test.cc | -rw-r--r-- | 1.8 KB |
ldb_test.py | -rw-r--r-- | 24.4 KB |
ldb_tool.cc | -rw-r--r-- | 4.6 KB |
pflag | -rwxr-xr-x | 4.0 KB |
reduce_levels_test.cc | -rw-r--r-- | 5.2 KB |
regression_test.sh | -rwxr-xr-x | 15.8 KB |
report_lite_binary_size.sh | -rwxr-xr-x | 1.2 KB |
rocksdb_dump_test.sh | -rwxr-xr-x | 364 bytes |
run_flash_bench.sh | -rwxr-xr-x | 13.5 KB |
run_leveldb.sh | -rwxr-xr-x | 6.2 KB |
sample-dump.dmp | -rw-r--r-- | 100 bytes |
sst_dump.cc | -rw-r--r-- | 581 bytes |
sst_dump_test.cc | -rw-r--r-- | 6.4 KB |
sst_dump_tool.cc | -rw-r--r-- | 23.5 KB |
sst_dump_tool_imp.h | -rw-r--r-- | 2.8 KB |
verify_random_db.sh | -rwxr-xr-x | 885 bytes |
write_stress.cc | -rw-r--r-- | 10.9 KB |
write_stress_runner.py | -rw-r--r-- | 2.3 KB |
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