Use group.cache.percent – for your index size, it might work well. Thanks,
On 5/31/17, 4:16 AM, "Marek Tichy" <ma...@gn.apc.org> wrote: Hi, I'm getting a very slow response times on grouping, especially on facet grouping. Without grouping, the query takes 14ms, faceting 57ms. With grouping, the query time goes up to 1131ms, with facet grouping, the faceting goes up to the unbearable 12103 ms. Single solr instance, 927086docs, 518.23 MB size, solr 6.4.1. Is this really the price of grouping ? Are there any magic tricks/tips/techniques to improve the speed ? The query params below. Many thanks for any help, much appreciated. Best Marek Tichy fq=((type:knihy) OR (type:defekty)) fl=* start=0 f.ebook_formats.facet.mincount=1 f.authorid.facet.mincount=1 f.thematicgroupid.facet.mincount=1 f.articleparts.facet.mincount=1 f.type.facet.mincount=1 f.languageid.facet.mincount=1 f.showwindow.facet.mincount=1 f.articletypeid_grouped.facet.mincount=1 f.languageid.facet.limit=10 f.ebook_formats.facet.limit=10 f.authorid.facet.limit=10 f.type.facet.limit=10 f.articleparts.facet.limit=10 f.thematicgroupid.facet.limit=10 f.articletypeid_grouped.facet.limit=10 f.showwindow.facet.limit=100 version=2.2 group.limit=30 rows=30 echoParams=all sort=date desc,planneddate asc group.field=edition facet.method=enum group.truncate=false group.format=grouped group=true group.ngroups=true stats=true facet=true group.facet=true stats.field={!distinctValues=true}categoryid facet.field={!ex=at}articletypeid_grouped facet.field={!ex=at}type facet.field={!ex=author}authorid facet.field={!ex=format}articleparts facet.field={!ex=format}ebook_formats facet.field={!ex=lang}languageid facet.field={!ex=sw}showwindow facet.field={!ex=tema}thematicgroupid stats.field={!min=true max=true}price stats.field={!min=true max=true}yearout