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Posted to issues@lucene.apache.org by "Robert Muir (Jira)" <ji...@apache.org> on 2021/02/21 14:25:00 UTC
[jira] [Created] (LUCENE-9795) investigate large checkindex
regression in nightly benchmarks
Robert Muir created LUCENE-9795:
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Summary: investigate large checkindex regression in nightly benchmarks
Key: LUCENE-9795
URL: https://issues.apache.org/jira/browse/LUCENE-9795
Project: Lucene - Core
Issue Type: Improvement
Reporter: Robert Muir
Attachments: Screen_Shot_2021-02-21_at_09.17.53.png
In the nightly benchmark, checkindex times increased more than 4x on the 2/16 datapoint
Looking at the commits on 2/15, most obvious thing to look into is docvalues terms dict compression: LUCENE-9663
Will try to pinpoint it more, my concern is some perf bug such as every single term causing decompression of the whole block repeatedly (missing seek-within-block opto?)
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