Okay. Thanks Shawn.. On Thu, Mar 26, 2015 at 12:25 PM, Shawn Heisey <apa...@elyograg.org> wrote:
> On 3/26/2015 12:03 AM, Nitin Solanki wrote: > > Great thanks Shawn... > > As you said - **For 204GB of data per server, I recommend at least 128GB > > of total RAM, > > preferably 256GB**. Therefore, if I have 204GB of data on single > > server/shard then I prefer is 256GB by which searching will be fast and > > never slow down. Is it? > > Obviously I cannot guarantee it, but I think it's extremely likely that > with that much memory, performance will be very good. > > One other possibility, which is discussed on that wiki page I linked, is > that your java heap is being almost exhausted and large amounts of time > are spent in garbage collection. If you increase the heap from 4GB to > 5GB and see performance get better, then that would be confirmed. There > would be less memory available for caching, but constant garbage > collection would be a much greater problem than the disk cache being too > small. > > Thanks, > Shawn > >
