Probably you can take a look at this jira : https://issues.apache.org/jira/browse/SOLR-1028 to get an idea.
On Sat, Nov 13, 2021 at 1:29 AM Rahul Goswami <rahul196...@gmail.com> wrote: > To clarify, I mean the number of Solr cores per JVM instance. How many Solr > cores on one node is too many? > As mentioned, it would be nice to get the numbers for a Solr instance > running in standalone mode (aka non-SolrCloud), but if not, would also be > interested to know about people's experience with SolrCloud in this regard. > > Thanks, > Rahul > > > On Fri, Nov 12, 2021 at 2:29 PM Tulsi Das <tulsi.das1...@gmail.com> wrote: > > > 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 > > > >> > > > > > > > > >
