swh:1:snp:5115096b921df712aeb2a08114fede57fb3331fb
Revision e63350e726d62144037d889c348cf007deda7a80 authored by Manuel Ung on 19 November 2016, 19:34:26 UTC, committed by Facebook Github Bot on 19 November 2016, 19:39:15 UTC
Summary: Currently, deadlock cycles are held in std::unordered_map. The problem with it is that it allocates/deallocates memory on every insertion/deletion. This limits throughput since we're doing this expensive operation while holding a global mutex. Fix this by using a vector which caches memory instead. Running the deadlock stress test, this change increased throughput from 39k txns/s -> 49k txns/s. The effect is more noticeable in MyRocks. Closes https://github.com/facebook/rocksdb/pull/1545 Differential Revision: D4205662 Pulled By: lth fbshipit-source-id: ff990e4
1 parent a13bde3
Tip revision: 19076c95aa2bcee55c26fcf0960cc844ad86ee9c authored by Levi Tamasi on 21 January 2021, 22:18:25 UTC
Update HISTORY.md for PR 7888 (#7890)
Update HISTORY.md for PR 7888 (#7890)
Tip revision: 19076c9
| File | Mode | Size |
|---|---|---|
| arcanist_util | ||
| build_tools | ||
| cmake | ||
| coverage | ||
| db | ||
| docs | ||
| examples | ||
| hdfs | ||
| include | ||
| java | ||
| memtable | ||
| port | ||
| table | ||
| third-party | ||
| tools | ||
| util | ||
| utilities | ||
| .arcconfig | -rw-r--r-- | 566 bytes |
| .clang-format | -rw-r--r-- | 138 bytes |
| .gitignore | -rw-r--r-- | 687 bytes |
| .travis.yml | -rw-r--r-- | 1.5 KB |
| AUTHORS | -rw-r--r-- | 247 bytes |
| CMakeLists.txt | -rw-r--r-- | 23.6 KB |
| CONTRIBUTING.md | -rw-r--r-- | 733 bytes |
| DEFAULT_OPTIONS_HISTORY.md | -rw-r--r-- | 1.1 KB |
| DUMP_FORMAT.md | -rw-r--r-- | 763 bytes |
| HISTORY.md | -rw-r--r-- | 38.3 KB |
| INSTALL.md | -rw-r--r-- | 3.9 KB |
| LANGUAGE-BINDINGS.md | -rw-r--r-- | 646 bytes |
| LICENSE | -rw-r--r-- | 1.6 KB |
| Makefile | -rw-r--r-- | 49.7 KB |
| PATENTS | -rw-r--r-- | 1.9 KB |
| README.md | -rw-r--r-- | 1.4 KB |
| ROCKSDB_LITE.md | -rw-r--r-- | 1.0 KB |
| USERS.md | -rw-r--r-- | 4.5 KB |
| Vagrantfile | -rw-r--r-- | 877 bytes |
| WINDOWS_PORT.md | -rw-r--r-- | 12.5 KB |
| appveyor.yml | -rw-r--r-- | 555 bytes |
| src.mk | -rw-r--r-- | 23.8 KB |
| thirdparty.inc | -rw-r--r-- | 7.8 KB |
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