Thanks Dominique. Got your view.. On Wed, Feb 18, 2015 at 11:55 PM, Dominique Bejean < dominique.bej...@eolya.fr> wrote:
> 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 > > > > >
