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 >> > >
