Re: Memory usage continually increases with reads

2010-04-28 Thread Kyusik Chung
Isnt setting swappiness to a lower value a good idea only if you know you have the physical RAM to support it? What Im observing on my box is that jsvc uses up all the physical RAM. Its VM size is 4-5GB right now (not sure if it will continue to grow). Apologies if Im misunderstanding how the

Re: Memory usage continually increases with reads

2010-04-28 Thread Time Less
This sounds similar to /proc/sys/vm/swappiness misconfiguration. Is it zero or close to zero? If setting it 0 solves your problem, make sure all your nodes get this: /etc/sysctl.conf: vm.swappiness=0 On Wed, Apr 28, 2010 at 12:12 PM, Kyusik Chung wrote: > Hello. I am using Cassandra 0.6.1 on

Re: Memory usage continually increases with reads

2010-04-28 Thread Kyusik Chung
Hi Ryan, Do you mean these settings, or other settings? 64 32 8 64 64 256 0.3 60 Thanks! Kyusik Chung On Apr 28, 2010, at 12:28 PM, Ryan King wrote: > On Wed, Apr 28, 2010 at 12:12 PM, Kyusik Chung > wrote: >> Hello. I am using Cassandra 0.6.1 on ubuntu 8.04. 3 node cluster. >> >> I noti

Re: Memory usage continually increases with reads

2010-04-28 Thread Ryan King
On Wed, Apr 28, 2010 at 12:12 PM, Kyusik Chung wrote: > Hello.  I am using Cassandra 0.6.1 on ubuntu 8.04.  3 node cluster. > > I notice that when I start making lots of read requests (serially), memory > usage of jsvc keeps climbing until it uses up all memory on the server > (happens for all 3

Memory usage continually increases with reads

2010-04-28 Thread Kyusik Chung
Hello. I am using Cassandra 0.6.1 on ubuntu 8.04. 3 node cluster. I notice that when I start making lots of read requests (serially), memory usage of jsvc keeps climbing until it uses up all memory on the server (happens for all 3 servers in the cluster). At that point, the box starts swappin