Hi, As Shawn said, install enough memory in order that all free direct memory (non heap memory) be used as disk cache. Use 40% maximum of the available memory for heap memory (Xmx JVM parameter), but never more than 32 Gb
And avoid your server to swap. For most Linux systems, this is configured using the /etc/sysctl.conf value: vm.swappiness = 1 This prevents swapping under normal circumstances, but still allows the OS to swap under emergency memory situations. A swappiness of 1 is better than 0, since on some kernel versions a swappiness of 0 can invoke the OOM-killer http://askubuntu.com/questions/103915/how-do-i-configure-swappiness http://unix.stackexchange.com/questions/88693/why-is-swappiness-set-to-60-by-default Dominique http://www.eolya.fr/ 2015-02-18 14:39 GMT+01:00 Shawn Heisey <apa...@elyograg.org>: > On 2/18/2015 4:20 AM, Nitin Solanki wrote: > > How can I place whole indexed data on cache by which if I will > > search any query then I will get response, suggestions, collations > rapidly. > > And also how to view that which documents are on cache and how to verify > it? > > Simply install enough extra memory in your machine for the entire index > to fit in RAM that is not being used by programs ... and then do NOT > allocate that extra memory to any program. > > The operating system will automatically do the caching for you as part > of normal operation, no config required. > > https://wiki.apache.org/solr/SolrPerformanceProblems#RAM > > Relevant articles referenced by that wiki page: > > http://en.wikipedia.org/wiki/Page_cache > http://blog.thetaphi.de/2012/07/use-lucenes-mmapdirectory-on-64bit.html > > Thanks, > Shawn > >
