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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: GC for ParNew (cassandra under performance ) 0.6.3
Date Sat, 07 May 2011 12:47:07 GMT
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 page that belongs to
only one process.


On Sat, May 7, 2011 at 1:39 AM, Ali Ahsan <ali.ahsan@panasiangroup.com> wrote:
> 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, 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
>
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-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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