Come cache hit problems can be fixed with the Large Pages feature. http://www.google.com/search?q=large+pages
On Wed, Sep 28, 2011 at 3:30 PM, Federico Fissore <feder...@fissore.org>wrote: > Frederik Kraus, il 28/09/2011 23:16, ha scritto: > > Yep, I'm not getting more than 50-60% CPU during those load tests. >> >> > I would try reducing the number of shards. A part from the memory > discussion, this really seems to me a concurrency issue: too many threads > waiting for other threads to complete, too many context switches... > > recently, on a lots-of-cores database server, we INCREASED speed by > REDUCING the number of cores/threads each query was allowed to use (making > sense of our customer investment) > maybe you can get a similar effect by reducing the number of pieces your > distributed search has to merge > > my 2 eurocents > > federico > -- Lance Norskog goks...@gmail.com
