Bogan, Something like dd if=/path/to/index/foo.cfs of=/dev/null Basically, force the data through the kernel preemptively, so FS caches it. Run vmstat while doing it, and if the index hasn't been cached by the FS, you should see a spike in IO activity while dd is running.
Otis ----- Original Message ---- From: Bogdan Ghidireac <[EMAIL PROTECTED]> To: java-user@lucene.apache.org Sent: Thursday, December 21, 2006 3:58:52 AM Subject: Re: First search is slow after updating index .. subsequent searches very fast Otis, I am not familiar with the 'dd trick' to warm up the index. Can you please explain it ? Bogdan On 12/20/06, Otis Gospodnetic <[EMAIL PROTECTED]> wrote: > > To populate FieldCache, the number of matches doesn't matter. There is no > need to be scrimy there - you don't really save anything by running a query > that matches only a few docs. Just run something that looks like a common > query. > > For warming up new indices, one can also use the `dd' trick under UNIX. > > Otis > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
