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5 Commits (c78a87cd71687351e1df39bf6898005671f6bd51)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Changyu Bi
|
8515bd50c9 |
Support read rate-limiting in SequentialFileReader (#9973)
Summary: Added rate limiter and read rate-limiting support to SequentialFileReader. I've updated call sites to SequentialFileReader::Read with appropriate IO priority (or left a TODO and specified IO_TOTAL for now). The PR is separated into four commits: the first one added the rate-limiting support, but with some fixes in the unit test since the number of request bytes from rate limiter in SequentialFileReader are not accurate (there is overcharge at EOF). The second commit fixed this by allowing SequentialFileReader to check file size and determine how many bytes are left in the file to read. The third commit added benchmark related code. The fourth commit moved the logic of using file size to avoid overcharging the rate limiter into backup engine (the main user of SequentialFileReader). Pull Request resolved: https://github.com/facebook/rocksdb/pull/9973 Test Plan: - `make check`, backup_engine_test covers usage of SequentialFileReader with rate limiter. - Run db_bench to check if rate limiting is throttling as expected: Verified that reads and writes are together throttled at 2MB/s, and at 0.2MB chunks that are 100ms apart. - Set up: `./db_bench --benchmarks=fillrandom -db=/dev/shm/test_rocksdb` - Benchmark: ``` strace -ttfe read,write ./db_bench --benchmarks=backup -db=/dev/shm/test_rocksdb --backup_rate_limit=2097152 --use_existing_db strace -ttfe read,write ./db_bench --benchmarks=restore -db=/dev/shm/test_rocksdb --restore_rate_limit=2097152 --use_existing_db ``` - db bench on backup and restore to ensure no performance regression. - backup (avg over 50 runs): pre-change: 1.90443e+06 micros/op; post-change: 1.8993e+06 micros/op (improve by 0.2%) - restore (avg over 50 runs): pre-change: 1.79105e+06 micros/op; post-change: 1.78192e+06 micros/op (improve by 0.5%) ``` # Set up ./db_bench --benchmarks=fillrandom -db=/tmp/test_rocksdb -num=10000000 # benchmark TEST_TMPDIR=/tmp/test_rocksdb NUM_RUN=50 for ((j=0;j<$NUM_RUN;j++)) do ./db_bench -db=$TEST_TMPDIR -num=10000000 -benchmarks=backup -use_existing_db | egrep 'backup' # Restore #./db_bench -db=$TEST_TMPDIR -num=10000000 -benchmarks=restore -use_existing_db done > rate_limit.txt && awk -v NUM_RUN=$NUM_RUN '{sum+=$3;sum_sqrt+=$3^2}END{print sum/NUM_RUN, sqrt(sum_sqrt/NUM_RUN-(sum/NUM_RUN)^2)}' rate_limit.txt >> rate_limit_2.txt ``` Reviewed By: hx235 Differential Revision: D36327418 Pulled By: cbi42 fbshipit-source-id: e75d4307cff815945482df5ba630c1e88d064691 |
3 years ago |
|
Hui Xiao
|
e66e6d2faa |
Use SpecialEnv to speed up some slow BackupEngineRateLimitingTestWithParam (#9974)
Summary: **Context:** `BackupEngineRateLimitingTestWithParam.RateLimiting` and `BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup` involve creating backup and restoring of a big database with rate-limiting. Using the normal env with a normal clock requires real elapse of time (13702 - 19848 ms/per test). As suggested in https://github.com/facebook/rocksdb/pull/8722#discussion_r703698603, this PR is to speed it up with SpecialEnv (`time_elapse_only_sleep=true`) where its clock accepts fake elapse of time during rate-limiting (100 - 600 ms/per test) **Summary:** - Added TEST_ function to set clock of the default rate limiters in backup engine - Shrunk testdb by 10 times while keeping it big enough for testing - Renamed some test variables and reorganized some if-else branch for clarity without changing the test Pull Request resolved: https://github.com/facebook/rocksdb/pull/9974 Test Plan: - Run tests pre/post PR the same time to verify the tests are sped up by 90 - 95% `BackupEngineRateLimitingTestWithParam.RateLimiting` Pre: ``` [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/0 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/0 (11123 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/1 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/1 (9441 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/2 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/2 (11096 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/3 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/3 (9339 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/4 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/4 (11121 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/5 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/5 (9413 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/6 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/6 (11185 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/7 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/7 (9511 ms) [----------] 8 tests from RateLimiting/BackupEngineRateLimitingTestWithParam (82230 ms total) ``` Post: ``` [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/0 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/0 (395 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/1 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/1 (564 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/2 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/2 (358 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/3 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/3 (567 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/4 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/4 (173 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/5 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/5 (176 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/6 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/6 (191 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/7 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimiting/7 (177 ms) [----------] 8 tests from RateLimiting/BackupEngineRateLimitingTestWithParam (2601 ms total) ``` `BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup` Pre: ``` [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/0 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/0 (7275 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/1 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/1 (3961 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/2 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/2 (7117 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/3 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/3 (3921 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/4 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/4 (19862 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/5 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/5 (10231 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/6 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/6 (19848 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/7 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/7 (10372 ms) [----------] 8 tests from RateLimiting/BackupEngineRateLimitingTestWithParam (82587 ms total) ``` Post: ``` [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/0 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/0 (157 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/1 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/1 (152 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/2 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/2 (160 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/3 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/3 (158 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/4 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/4 (155 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/5 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/5 (151 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/6 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/6 (146 ms) [ RUN ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/7 [ OK ] RateLimiting/BackupEngineRateLimitingTestWithParam.RateLimitingVerifyBackup/7 (153 ms) [----------] 8 tests from RateLimiting/BackupEngineRateLimitingTestWithParam (1232 ms total) ``` Reviewed By: pdillinger Differential Revision: D36336345 Pulled By: hx235 fbshipit-source-id: 724c6ba745f95f56d4440a6d2f1e4512a2987589 |
3 years ago |
|
sdong
|
736a7b5433 |
Remove own ToString() (#9955)
Summary: ToString() is created as some platform doesn't support std::to_string(). However, we've already used std::to_string() by mistake for 16 months (in db/db_info_dumper.cc). This commit just remove ToString(). Pull Request resolved: https://github.com/facebook/rocksdb/pull/9955 Test Plan: Watch CI tests Reviewed By: riversand963 Differential Revision: D36176799 fbshipit-source-id: bdb6dcd0e3a3ab96a1ac810f5d0188f684064471 |
3 years ago |
|
sdong
|
49628c9a83 |
Use std::numeric_limits<> (#9954)
Summary: Right now we still don't fully use std::numeric_limits but use a macro, mainly for supporting VS 2013. Right now we only support VS 2017 and up so it is not a problem. The code comment claims that MinGW still needs it. We don't have a CI running MinGW so it's hard to validate. since we now require C++17, it's hard to imagine MinGW would still build RocksDB but doesn't support std::numeric_limits<>. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9954 Test Plan: See CI Runs. Reviewed By: riversand963 Differential Revision: D36173954 fbshipit-source-id: a35a73af17cdcae20e258cdef57fcf29a50b49e0 |
3 years ago |
|
Peter Dillinger
|
6534c6dea4 |
Fix remaining uses of "backupable" (#9792)
Summary: Various renaming and fixes to get rid of remaining uses of "backupable" which is terminology leftover from the original, flawed design of BackupableDB. Now any DB can be backed up, using BackupEngine. Pull Request resolved: https://github.com/facebook/rocksdb/pull/9792 Test Plan: CI Reviewed By: ajkr Differential Revision: D35334386 Pulled By: pdillinger fbshipit-source-id: 2108a42b4575c8cccdfd791c549aae93ec2f3329 |
3 years ago |