DiskAccessMode mmap mlockall() used No row caches Default keycache Default memtable thresholds
-Chris On Jan 16, 2011, at 5:06 PM, Aaron Morton wrote: > Chris, could you provide some more info on you experience? Were you using > mmapped files? Using row or key caches? What were the memtabe thresholds? > Using mlockall() ? > > There are a couple of issues listed in the first paragraphs here that at > first glance may cause issues > http://www.oracle.com/technetwork/java/javase/tech/largememory-jsp-137182.html > > cheers > Aaron > > On 17/01/2011, at 1:45 PM, Chris Goffinet <c...@chrisgoffinet.com> wrote: > >> I've seen about a 13% improvement in practice. >> >> -Chris >> >> On Jan 16, 2011, at 4:01 PM, David Dabbs wrote: >> >>> Hello. >>> >>> Can anyone comment on the performance impact (positive or negative) >>> of running Cassandra configured to use large pages under Linux? >>> Yes, YMMV applies, but I thought I'd ask before enlisting sysadmin Fu, etc. >>> >>> >>> Thanks! >>> >>> David >>> >>> >>
