Hi, You'd use something like SPM for Solr (http://sematext.com/spm/solr-performance-monitoring/) and correlate (long) warmup times with CPU usage on an N-core system and when you see the CPU go up during warmup, but not quite "all the way" then, I believe, you should be able to say "Hm, the CPUs are not maxed out because they are not all being used during warmup and my warmup is taking M minutes. If only I could make use of all my N CPUs in parallel and cut down M (maybe by M/N, but not necessarily - depends on how expensive is each warmup query)."
You should be able to see this well with `top' as well. Otis -- Performance Monitoring * Log Analytics * Search Analytics Solr & Elasticsearch Support * http://sematext.com/ On Sat, Nov 16, 2013 at 4:15 AM, Saar Carmi <saarca...@gmail.com> wrote: > Otis, > This raises a newbie question - > How would one know what query is 1-CPU bounded and what is multi-threaded? > > Saar > > > > On Sat, Nov 16, 2013 at 10:28 AM, Otis Gospodnetic < > otis.gospodne...@gmail.com> wrote: > >> Hi, >> >> It looks like warmup queries execute sequentially. >> >> Considering servers have N CPU cores these days, would it make sense >> to make them (optionally) run in parallel? This should help with >> cases where warmup queries are CPU bound by letting Solr use more than >> 1 thread and thus more than 1 CPU core. Should I add to JIRA? >> >> Thanks, >> Otis >> -- >> Performance Monitoring * Log Analytics * Search Analytics >> Solr & Elasticsearch Support * http://sematext.com/ >> > > > > -- > Saar Carmi > > Mobile: 054-7782417 > Email: saarca...@gmail.com
