Hi Rahul , Are you asking about the cores (number of replica's per node) or the cpu cores?
On Sat, Nov 13, 2021, 12:50 AM Walter Underwood <wun...@wunderwood.org> wrote: > We’ve run on AWS instances with 72 CPUs. They all get used. Throughput is > linear with the number of CPUs. You need enough free RAM to cache all of > the index files in OS file buffers. > > The entire point of avoiding locking in the Lucene index is so that > multiple threads can read it without contention. We made the same decision > in the Ultraseek index design 25 years ago. > > We don’t do any special JVM tuning. We use the config that Shawn Heisey > recommended five years ago. We reacently increased the heap from 8 GB to 16 > GB. > > GC_TUNE=" \ > -XX:+UseG1GC \ > -XX:+ParallelRefProcEnabled \ > -XX:G1HeapRegionSize=8m \ > -XX:MaxGCPauseMillis=200 \ > -XX:+UseLargePages \ > -XX:+AggressiveOpts \ > " > > wunder > Walter Underwood > wun...@wunderwood.org > http://observer.wunderwood.org/ (my blog) > > > On Nov 12, 2021, at 7:41 AM, Deepak Goel <deic...@gmail.com> wrote: > > > > My guess is (please note it is not a benchmark): you would need a lot of > > tuning to make Solr use 32 cpu cores per node. After 4 cpu cores, you > would > > have to start tuning Solr, JVM, your app (requirement), IOP'S. > > > > Deepak > > "The greatness of a nation can be judged by the way its animals are > treated > > - Mahatma Gandhi" > > > > +91 73500 12833 > > deic...@gmail.com > > > > Facebook: https://www.facebook.com/deicool > > LinkedIn: www.linkedin.com/in/deicool > > > > "Plant a Tree, Go Green" > > > > Make In India : http://www.makeinindia.com/home > > > > > > On Fri, Nov 12, 2021 at 8:33 PM Rahul Goswami <rahul196...@gmail.com> > wrote: > > > >> Hi, > >> Does anyone have benchmarks on performance as the number of cores on a > Solr > >> node goes up? I am trying to get an idea about how many cores per node > is > >> too much. Assume 31 GB heap size, SSD disk and 32 CPU cores. > >> Preferably non-SolrCloud (aka standalone), but even if you have insights > >> from SolrCloud that would be a good start. > >> I am using Solr 7.7.2. > >> > >> Thanks, > >> Rahul > >> > >
