The OS keeps recently accessed disk pages in memory. If another process does a lot of disk access, like a backup, the OS might replace the Solr index pages with that processes pages.
What kind of storage: local disk, SAN, NFS? wunder On 1/22/09 11:22 AM, "oleg_gnatovskiy" <oleg_gnatovs...@citysearch.com> wrote: > > What are some things that could happen to force files out of the cache on a > Linux machine? I don't know what kinds of events to look for... > > > > > yonik wrote: >> >> On Thu, Jan 22, 2009 at 1:46 PM, oleg_gnatovskiy >> <oleg_gnatovs...@citysearch.com> wrote: >>> Hello. Our production servers are operating relatively smoothly most of >>> the >>> time running Solr with 19 million listings. However every once in a while >>> the same query that used to take 100 miliseconds takes 6000. >> >> Anything else happening on the system that may have forced some of the >> index files out of operating system disk cache at these times? >> >> -Yonik >> >>
