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Varun Thacker edited comment on SOLR-12616 at 8/7/18 2:25 AM: -------------------------------------------------------------- Patch which tests {{SingleValueSortDoc}} vs SortDoc Indexed 25M docs onto a 1 shard X 1 replica collection. query - {{/export?q=*:*&fl=id&sort=id desc}} With {{-Dtest.export.writer.optimized=true}} = 7m13 , 7m23 Without {{-Dtest.export.writer.optimized=true}} = 10m27 , 10m31 For both SortDoc and SingleValueSortDoc lessThan get's called 33049246584 times setValues get's called 11220331053 times was (Author: varunthacker): Patch which tests {{SingleValueSortDoc}} vs SortDoc Indexed 25M docs onto a 1 shard X 1 replica collection. query - {{/export?q=*:*&fl=id&sort=id desc}} With {{-Dtest.export.writer.optimized=true}} = 7m13 , 7m23 Without {{-Dtest.export.writer.optimized=true}} = 10m27 , 10m31 I haven't started looking into what's difference b/w SortDoc and SingleValueSortDoc because of which we see such speed differences. > Track down performance slowdowns with ExportWriter > -------------------------------------------------- > > Key: SOLR-12616 > URL: https://issues.apache.org/jira/browse/SOLR-12616 > Project: Solr > Issue Type: Bug > Security Level: Public(Default Security Level. Issues are Public) > Components: streaming expressions > Reporter: Varun Thacker > Priority: Major > Attachments: SOLR-12616.patch > > > Just to be clear for users glancing through this Jira : The performance > slowdown is currently on an unreleased version of Solr so no versions are > affected by this. > While doing some benchmarking for SOLR-12572 , I compared the export writers > performance against Solr 7.4 and there seems to be some slowdowns that have > been introduced. Most likely this is because of SOLR-11598 > In an 1 shard 1 replica collection with 25M docs. We issue the following > query > {code:java} > /export?q=*:*&sort=id desc&fl=id{code} > Solr 7.4 took 8:10 , 8:20 and 8:22 in the 3 runs that I did > Master took 10:46 > Amrit's done some more benchmarking so he can fill in with some more numbers > here. > -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org