Russell Bahr <r...@manzama.com> wrote: > Did you get a chance to look at the configs and logs that I posted?
Sorry, firefighting at work and the weekend happened. Don't really have time now either, but I took a look in your solrconfig.xml after David noticed the group-thing. Grouping in itself isn't necessarily that bad, but ngroups can be quite heavy (and is tricky with distributed searches, so I hope you read the documentation on that). Try setting group.ngroups=false (doing so in your request should override what you have in solrconfig.xml) and if that does not change anything, try disabling grouping fully. It does not explain the difference between Solr 4 & 8, but I agree with David that we need to isolate what causes the overall slowdown first, before we can attempt to fix the Solr 4 vs 8 thing. - Toke Eskildsen
