Hi Birender, Do you monitor you heap? Is it possible that you are running close to max heap size and that GC is what is taking CPU?
Emir -- Monitoring - Log Management - Alerting - Anomaly Detection Solr & Elasticsearch Consulting Support Training - http://sematext.com/ > On 11 Feb 2018, at 19:38, Birender Rawat <birender.ra...@gmail.com> wrote: > > I have upgraded Solr4.0 Beta to Solr6.6. The Cache results look Awesome but > overall the CPU load on solr6.6 is double the load on solr4.0 and hence I > am not able to roll solr6.6 to 100% of my traffic. > > *Some Key Stats In Performance of Sol6 Vs Solr4* > Document cache usage increased from .98 from .14 > Query Result cache usage increased from .10 from .24 > Filter cache same as .94 > Field Value cache was 0.99 in solr4 but n/a in solr6 (i guess because field > multivalued concept was changed from solr4 to solr6) > > *Please Help Note: I have given document cache 3 times memory for > doc.cache.*