RE: Config changes to leverage new hardware

2013-11-25 Thread Arindam Barua
M count=1 and checked the disk cache, and it increased by exactly the same size of the file written (no reads were done in this case) -Original Message- From: Aaron Morton [mailto:aa...@thelastpickle.com] Sent: Monday, November 25, 2013 11:55 AM To: Cassandra User Subject: Re: Conf

Re: Config changes to leverage new hardware

2013-11-25 Thread Aaron Morton
32 GB RAM > for a long time now, looking at 5 hosts in 1 DC, only 2.5 GB to 8 GB was used > for the disk cache. The Cassandra java process uses the 8 GB allocated to it, > and at least 10-15 GB on all the hosts is not used at all. > > Thanks, > Arindam > > From: Aaron

RE: Config changes to leverage new hardware

2013-11-20 Thread Arindam Barua
disk cache. The Cassandra java process uses the 8 GB allocated to it, and at least 10-15 GB on all the hosts is not used at all. Thanks, Arindam From: Aaron Morton [mailto:aa...@thelastpickle.com] Sent: Wednesday, November 06, 2013 8:34 PM To: Cassandra User Subject: Re: Config changes to

Re: Config changes to leverage new hardware

2013-11-06 Thread Aaron Morton
> Running Cassandra 1.1.5 currently, but evaluating to upgrade to 1.2.11 soon. You will make more use of the extra memory moving to 1.2 as it moves bloom filters and compression data off heap. Also grab the TLAB setting from cassandra-env.sh in v1.2 > As of now, our performance tests (our appli

Config changes to leverage new hardware

2013-11-06 Thread Arindam Barua
We want to upgrade our Cassandra cluster to have newer hardware, and were wondering if anyone has suggestions on Cassandra or linux config changes that will prove to be beneficial. As of now, our performance tests (our application specific as well as cassandra-stress) are not showing any signif