The metrics code added in 6.4 cause a big performance problem. I believe that was fixed by 6.5.1, but there might be some lingering issues.
See: https://issues.apache.org/jira/browse/SOLR-10130 wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Apr 16, 2018, at 5:55 AM, Deepak Goel <deic...@gmail.com> wrote: > > Do you see a performance improvement in your 'Query Times' (6.2.1 > vis-a-vis 6.5.1)? > > > > Deepak > "Please stop cruelty to Animals, help by becoming a Vegan" > +91 73500 12833 > deic...@gmail.com > > Facebook: https://www.facebook.com/deicool > LinkedIn: www.linkedin.com/in/deicool > > "Plant a Tree, Go Green" > > On Mon, Apr 16, 2018 at 3:15 PM, Bernd Fehling < > bernd.fehl...@uni-bielefeld.de> wrote: > >> It would help if you can trace it down to a version change. >> Do you have a test system and start with 6.3.0 as next version above 6.2.1 >> to see which version change is making you trouble? >> You can then try 6.4.0 and 6.5.0 next. And after that go into subversions. >> >> Regards, Bernd >> >> >> Am 16.04.2018 um 09:39 schrieb mganeshs: >>> Hi Bernd, >>> >>> We didn't change any default settings. >>> >>> Both 6.2.1 and 6.5.1 is running with same settings, same volume of data, >>> same code, which means indexing rate is also same. >>> >>> In Case of 6.2.1 CPU is around 60 to 70%. But in 6.5.1 it's always around >>> 95%. The CPU % in 6.5.1 is alarming for us and we keep getting alerts as >>> it's always more than 95%. >>> >>> Basically, my question is why is that in 6.2.1 CPU is low and for 6.5.1 >> it's >>> very high ? I though only I am facing this issue, but one more in the >> forum >>> also raised this issue, but nothing concluded so far. >>> >>> In another thread Shawn also suggested changes wrt merge policy numbers. >> But >>> CPU % didn't come down. But in 6.2.1 with default settings itself, it >> works >>> fine and CPU is also normal. So created new thread to discuss wrt CPU >>> utilization between old version (6.2.1 ) and new version (6.5.1+) >>> >>> Regards, >>> >>> >>> >>> -- >>> Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html >>> >>
