trafficserver-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bryan Call <bc...@yahoo-inc.com>
Subject Re: Too many context switching on ATS
Date Tue, 10 Jul 2012 16:34:40 GMT
Is there a difference in the CPUs between the servers?  I have seen servers with lots of cores
(24 cores) do more context switching.

-Bryan

On Jul 3, 2012, at 3:39 AM, Hung Nguyen wrote:

> Dear guys,
> 
> I do some test cases on 2 servers which installed Traffic server as reverse proxy. 
> 
> - Box 1: using SSD disk which using 15GB for disk cache, 15GB ram cache 
> - Box 2: using SAS disk which using 4GB for disk cache, 4 GB ram cache  
> 
> 
> On box 1 I got about 10K context switch
> 
> 
> -- trafficserver]# tsar --pcsw -i 1 -l 
> Time        -------pcsw----- 
> Time         cswch    proc   
> 03/07-17:31  10.2K     0.0   
> 03/07-17:31  10.7K     6.0   
> 03/07-17:31  10.4K    61.0   
> 
> 
> On box 2: 
>  tsar --pcsw -i 1 -l 
> Time        -------pcsw----- 
> Time         cswch    proc   
> 03/07-17:32   4.5K     0.0   
> 03/07-17:32   5.0K     0.0   
> 03/07-17:32   4.4K     0.0   
> 
> 
> is there any reason cause ATS create many context switches on server?
> 
> ---
> Hung. Nguyen Van
> Website: http://ethicconsultant.com 
> 
> 


Mime
View raw message