On Tue, Oct 26, 2021 at 8:11 AM Paul Russell <paul.russ...@qflow.com> wrote: > > I have a current SOLR cluster running SOLR 6.6 on RHEL 6 servers. All SOLR > instances use a 25G JVM on the RHEL 6 server configured with 64G of memory > managing a 900G collection. Measured response time to queries average about > 100ms. > > I am attempting to move the cluster to new RHEL 7 servers with the same > configuration (8 cores/ 64G memory) and having performance issues. > > On the RHEL 7 servers the kswapd0 process is consuming up to 30% of the CPU > and response time is being measured at 500-1000 ms for queries. > > I tried using the vm.swappiness setting at both 0 and 1 and have been > unable to change the behavior. If I trim the SOLR JVM to 16Gb response > times get better and GC logs show the JVM is operating correctly.. > > Has anyone else had a similar issue? I have tried upgrading to SOLR 7.7.2 > as part of the process and that hasn't helped. > > Any suggestions?
Are you running tuned on the servers? If so have you tried different profiles like 'latency-performance'
