[ https://issues.apache.org/jira/browse/LUCENE-1997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Erick Erickson resolved LUCENE-1997. ------------------------------------ Resolution: Won't Fix 2013 Old JIRA cleanup > Explore performance of multi-PQ vs single-PQ sorting API > -------------------------------------------------------- > > Key: LUCENE-1997 > URL: https://issues.apache.org/jira/browse/LUCENE-1997 > Project: Lucene - Core > Issue Type: Improvement > Components: core/search > Affects Versions: 2.9 > Reporter: Michael McCandless > Assignee: Michael McCandless > Attachments: LUCENE-1997.patch, LUCENE-1997.patch, LUCENE-1997.patch, > LUCENE-1997.patch, LUCENE-1997.patch, LUCENE-1997.patch, LUCENE-1997.patch, > LUCENE-1997.patch, LUCENE-1997.patch > > > Spinoff from recent "lucene 2.9 sorting algorithm" thread on java-dev, > where a simpler (non-segment-based) comparator API is proposed that > gathers results into multiple PQs (one per segment) and then merges > them in the end. > I started from John's multi-PQ code and worked it into > contrib/benchmark so that we could run perf tests. Then I generified > the Python script I use for running search benchmarks (in > contrib/benchmark/sortBench.py). > The script first creates indexes with 1M docs (based on > SortableSingleDocSource, and based on wikipedia, if available). Then > it runs various combinations: > * Index with 20 balanced segments vs index with the "normal" log > segment size > * Queries with different numbers of hits (only for wikipedia index) > * Different top N > * Different sorts (by title, for wikipedia, and by random string, > random int, and country for the random index) > For each test, 7 search rounds are run and the best QPS is kept. The > script runs singlePQ then multiPQ, and records the resulting best QPS > for each and produces table (in Jira format) as output. -- This message was sent by Atlassian JIRA (v6.1#6144) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org