On Thu, Mar 17, 2011 at 10:27 AM, Zhu Han <schumi....@gmail.com> wrote:
> > > On Thu, Feb 3, 2011 at 1:49 AM, Ryan King <r...@twitter.com> wrote: > >> On Wed, Feb 2, 2011 at 6:22 AM, Chris Burroughs >> <chris.burrou...@gmail.com> wrote: >> > On 01/28/2011 09:19 PM, Chris Burroughs wrote: >> >> Thanks Oleg and Zhu. I swear that wasn't a new hotspot version when I >> >> checked, but that's obviously not the case. I'll update one node to >> the >> >> latest as soon as I can and report back. >> > >> > >> > RSS over 48 hours with java 6 update 23: >> > >> > http://img716.imageshack.us/img716/5202/u2348hours.png >> > >> > I'll continue monitoring but RSS still appears to grow without bounds. >> > Zhu reported a similar problem with Ubuntu 10.04. While possible, it >> > would seem seam extraordinary unlikely that there is a glibc or kernel >> > bug affecting us both. >> >> We're seeing a similar problem with one of our clusters (but over a >> longer time scale). > > Does it mean not all your clusters running cassandra observed the same RSS growth problem? > Its possible that its not a leak, but just >> fragmentation. Unless you've told it otherwise, the jvm uses glibc's >> malloc implementation for off-heap allocations. We're currently >> running a test with jemalloc on one node to see if the problem goes >> away. >> > > Ryan, does jemalloc solve the RSS growth problem in your test? > > -ryan >> > >
