Hi That sloved my issue of GC,Now i am facing with new one
i have no swap but this process kswapd0 take up 100% cpu when there is
load on cassandra any idea why this is happening
On 05/05/2011 09:06 PM, Ali Ahsan wrote:
Thanks replying,let me disable my swap memory.
On 05/05/2011 09:01 PM,
I'll quote the top google hit for [kswapd0 100%]:
How much memory did you have in cached when you looked
with top (and no swap enabled) ?
If the amount of cached memory is very low, it could mean
that your shared libraries are being pushed out of memory,
instead of the kernel swapping out some
This what free -m and vmstat show now my CPU is on 100%
[root@cassandra2 ~]# free -m
total used free sharedbuffers cached
Mem: 16043 15966 76 0 4900
-/+ buffers/cache: 15061982
Swap:0
Hi All
some on suggested about linux scheduler cat
/sys/block/sda/queue/scheduler there are quite few of them noop
[anticipatory] deadline cfq.I have changed from cfq default to
anticipatory,Now problem is less for me kswapd0 take 10-50% of cpu in
very short bust less then milliseconds.Also
Hi All
I have two cassandra node with RF=2,Cassandra start under performing i
mean red write are slow and i see following info in cassandra log.I have
centos 5.5 64 bit with 14 GB memory assigned to cassandra.I am using LVM
for cassandra.When i reboot my cassanrda every thing become normal.
6s parnew is insane. you're probably swapping. Easiest fix is
disabling swap entirely.
P.S. 0.6.3 is ancient.
On Thu, May 5, 2011 at 10:51 AM, Ali Ahsan ali.ah...@panasiangroup.com wrote:
Hi All
I have two cassandra node with RF=2,Cassandra start under performing i mean
red write are slow
Thanks replying,let me disable my swap memory.
On 05/05/2011 09:01 PM, Jonathan Ellis wrote:
6s parnew is insane. you're probably swapping. Easiest fix is
disabling swap entirely.
P.S. 0.6.3 is ancient.
--
S.Ali Ahsan
Senior System Engineer
e-Business (Pvt) Ltd
49-C Jail Road,
