zodb / relstorage
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LAST BUILD ON BRANCH faster-conflict-loading
branch: faster-conflict-loading
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1086

Pull #309

travis-ci

web-flow 
Speed up conflict resolution.

- Get committed data in bulk;
- Store replacement data in bulk.

This eliminates lots of database queries if there's more than one
conflict. Since this happens while rows are locked, the faster this
is, and the fewer round trips, the better. Results are 40-90%
improvements, depending on cache configuration.

+---------------------------------------------+-----------------------------------------+-----------------------------------------+
| Benchmark                                   | pg11-c10-proc-conflicts-uncached-master | pg11-c10-proc-conflicts-uncached-branch |
+=============================================+=========================================+=========================================+
| psycopg2_hf: update 100 conflicting objects | 1.55 sec                                | 878 ms: 1.76x faster (-43%)             |
+---------------------------------------------+-----------------------------------------+-----------------------------------------+

+---------------------------------------------+---------------------------------------+---------------------------------------+
| Benchmark                                   | pg11-c10-proc-conflicts-cached-master | pg11-c10-proc-conflicts-cached-branch |
+=============================================+=======================================+=======================================+
| psycopg2_hf: update 100 conflicting objects | 789 ms                                | 94.1 ms: 8.39x faster (-88%)          |
+---------------------------------------------+---------------------------------------+---------------------------------------+

+------------------------------------------------+-----------------------------------------+-----------------------------------------+
| Benchmark                                      | my57-c10-proc-conflicts-uncached-master | my57-c10-proc-conflicts-uncached-branch |
+================================================+======================... (continued)
Pull Request #309: Speed up conflict resolution.

89 of 89 new or added lines in 16 files covered. (100.0%)

15999 of 17156 relevant lines covered (93.26%)

3.7 hits per line

Relevant lines Covered
17156 RELEVANT LINES 15999 COVERED LINES
3.7 HITS PER LINE
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1086 faster-conflict-loading Speed up conflict resolution. - Get committed data in bulk; - Store replacement data in bulk. This eliminates lots of database queries if there's more than one conflict. Since this happens while rows are locked, the faster this is, and the fewer... Pull #309 web-flow travis-ci pending completion  
1085 faster-conflict-loading Speed up conflict resolution. - Get committed data in bulk; - Store replacement data in bulk. This eliminates lots of database queries if there's more than one conflict. Since this happens while rows are locked, the faster this is, and the fewer... push jamadden travis-ci pending completion  
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