Sounds like you need to use a larger heap or put less stuff in it (memtables, caches).
On Thu, Feb 10, 2011 at 11:17 AM, Huy Le <hu...@springpartners.com> wrote: > Yes, we had setting at 75 but JVM did not have enough time to do GC, so it > abort GC'ing. We lowered it to 50, but still had issue, so we lowered it > again to 35. > > On Thu, Feb 10, 2011 at 12:11 PM, Oleg Anastasyev <olega...@gmail.com> > wrote: >> >> Huy Le <huyle <at> springpartners.com> writes: >> >> > Our CMS settings are: -XX:CMSInitiatingOccupancyFraction=35 >> > \ >> -XX:+UseCMSInitiatingOccupancyOnly \ >> > >> >> Occupancy Fraction = 35 seems very low value. You instructed GC to make >> collection as soon as memory usage is at 35% - i.e. about 1G. This seems >> very >> low for production. >> Did you tried another setting for this parameter ? 75 seems safe one. >> > > > > -- > Huy Le > Spring Partners, Inc. > http://springpadit.com > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
