incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jeremiah Jordan <jeremiah.jor...@morningstar.com>
Subject Re: Thrift CPU Usage
Date Mon, 26 Sep 2011 21:11:00 GMT
Yes.  All the stress tool does is flood data through the API, no real 
processing or anything happens.  So thrift reading/writing data should 
be the majority of the CPU time...

On 09/26/2011 08:32 AM, Baskar Duraikannu wrote:
> Hello -
>
> I have been running read tests on Cassandra using "stress" tool.  I have been noticing
that thrift seems to be taking lot of CPU over 70% when I look at the "CPU samples" report.
Is this normal?
>
> CPU usage seems to go down by 5 to 10% when I change the RPC from "sync" to "async".
 Is this normal?
>
> I am running Cassandra 0.8.4 on Cent OS 5.6 ( Kernel 2.6.18.238) and Oracle JVM.
>
> -
> Thanks
> Baskar Duraikannu

Mime
View raw message