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Michael McCandless commented on LUCENE-3023: -------------------------------------------- This cutover to concurrent flushing (DWPT) produces astounding increases in indexing throughput: http://people.apache.org/~mikemccand/lucenebench/indexing.html 186 GB plain text per hour (from 101 GB/hour the day before)!!! It's not every day you see an 84% jump in indexing throughput! Wow. This is on a machine that has substantial CPU+IO concurrency, ie, it was bottlenecked by our non-concurrent flush. Also, I can now tune up the IW settings I use in those nightly benchmarks; it's now 6 threads and "only" 512 MB RAM buffer. I'll wait a few days and then do that. Looks like a few queries got a bit slower... I suspect this is because the index segment count has changed. Before concurrent flushing it was this: {noformat} 36(4.0):C4977400 _69(4.0):C4977400 _9c(4.0):C4977400 _cf(4.0):C4977400 _fi(4.0):C4977400 _fq(4.0):C497740 _g1(4.0):C497740 _gc(4.0):C497740 _gn(4.0):C497740 _gy(4.0):C497740 _gx(4.0):C49774 _gz(4.0):C49774 _h0(4.0):C49774 _h1(4.0):C49774 _h2(4.0):C49774 _h3(4.0):C468 {noformat} After concurrent flushing: {noformat} _3d(4.0):C4977400 _6h(4.0):C4977400 _9j(4.0):C4977400 _cn(4.0):C4977400 _fq(4.0):C4977400 _fu(4.0):C497740 _g6(4.0):C497740 _gh(4.0):C497740 _gs(4.0):C497740 _h2(4.0):C497740 _gy(4.0):C49774 _gz(4.0):C49774 _h0(4.0):C49774 _h5(4.0):C4105 _1(4.0):C2627 _h4(4.0):C16331 _h3(4.0):C28728 _h1(4.0):C48225 {noformat} So we have 2 extra segments... it's interesting how this affects some queries but not others. > Land DWPT on trunk > ------------------ > > Key: LUCENE-3023 > URL: https://issues.apache.org/jira/browse/LUCENE-3023 > Project: Lucene - Java > Issue Type: Task > Affects Versions: CSF branch, 4.0 > Reporter: Simon Willnauer > Assignee: Simon Willnauer > Fix For: 4.0 > > Attachments: LUCENE-3023-quicksort-reincarnation.patch, > LUCENE-3023-svn-diff.patch, LUCENE-3023-ws-changes.patch, LUCENE-3023.patch, > LUCENE-3023.patch, LUCENE-3023.patch, LUCENE-3023.patch, > LUCENE-3023_CHANGES.patch, LUCENE-3023_CHANGES.patch, > LUCENE-3023_iw_iwc_jdoc.patch, LUCENE-3023_simonw_review.patch, > LUCENE-3023_svndiff.patch, LUCENE-3023_svndiff.patch, diffMccand.py, > diffSources.patch, diffSources.patch, realtime-TestAddIndexes-3.txt, > realtime-TestAddIndexes-5.txt, > realtime-TestIndexWriterExceptions-assert-6.txt, > realtime-TestIndexWriterExceptions-npe-1.txt, > realtime-TestIndexWriterExceptions-npe-2.txt, > realtime-TestIndexWriterExceptions-npe-4.txt, > realtime-TestOmitTf-corrupt-0.txt > > > With LUCENE-2956 we have resolved the last remaining issue for LUCENE-2324 so > we can proceed landing the DWPT development on trunk soon. I think one of the > bigger issues here is to make sure that all JavaDocs for IW etc. are still > correct though. I will start going through that first. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org