No worries, I don't mind being confused with Erick ;) Emir
On Feb 9, 2018 9:16 PM, "Susheel Kumar" <susheel2...@gmail.com> wrote: > Sorry, I meant Emir. > > On Fri, Feb 9, 2018 at 3:15 PM, Susheel Kumar <susheel2...@gmail.com> > wrote: > > > Thanks, Shawn, Eric. I see that same using swapon -s. Looks like during > > the OS setup, it was set as 2 GB (Solr 6.0) and other 16GB (Solr 6.6) > > > > Our 6.0 instance has been running since 1+ year but recently our monit > > started reporting swap usage above 30% and Solr dashboard showing the > > same. I haven't been able to find what causes / why Solr is using the > swap > > space. The index size is well within memory size to fit and we have > double > > the index size on our performance test machines but there is no usage of > > swap space. > > > > Thanks, > > Susheel > > > > On Wed, Feb 7, 2018 at 3:09 PM, Shawn Heisey <apa...@elyograg.org> > wrote: > > > >> On 2/7/2018 12:01 PM, Susheel Kumar wrote: > >> > >>> Just trying to find where do we set swap space available to Solr > >>> process. I > >>> see in our 6.0 instances it was set to 2GB on and on 6.6 instances its > >>> set > >>> to 16GB. > >>> > >> > >> Solr has absolutely no involvement or control over swap space. Neither > >> does Java. This is a function of your operating system's memory > >> management, and is typically set up when you first install your OS. > >> > >> https://www.linux.com/news/all-about-linux-swap-space > >> https://en.wikipedia.org/wiki/Paging#Windows_NT > >> > >> If your system is using swap space, it's a strong indication that you > >> don't have enough memory installed. If any of the memory that Solr > uses is > >> swapped out to disk, Solr performance is going to be REALLY bad. > >> > >> Thanks, > >> Shawn > >> > > > > >
