From owner-freebsd-net@FreeBSD.ORG  Fri Feb 10 13:56:44 2006
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Date: Fri, 10 Feb 2006 15:57:25 +0200
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Subject: Re: Network performance in a dual CPU system
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You must migrate to AMD Opteron. INTEL very very suxX.

On Fri, 10 Feb 2006 08:46:00 -0500
Marcos Bedinelli <bedinelli@madhaus.cns.utoronto.ca> wrote:

> Hello all,
> 
> We have a 2.4GHz Intel Xeon machine running FreeBSD 6.0-RELEASE-p2. Due 
> to heavy network traffic, CPU utilization on that machine is 100%:
> 
> ===
> 
> mull [~]$top -S
> last pid: 94989;  load averages:  3.69,  4.02,  4.36           up 
> 25+07:21:34  14:51:43
> 105 processes: 2 running, 46 sleeping, 57 waiting
> CPU states:  0.0% user,  0.0% nice,  0.3% system, 99.4% interrupt,  
> 0.3% idle
> Mem: 20M Active, 153M Inact, 84M Wired, 4K Cache, 60M Buf, 237M Free
> Swap: 999M Total, 999M Free
> 
>    PID USERNAME   THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
>     60 root         1 -44 -163     0K     8K WAIT   355.6H 72.17% swi1: 
> net
>     39 root         1 -68 -187     0K     8K WAIT    52.3H  5.22% irq28: 
> bge0
>     40 root         1 -68 -187     0K     8K WAIT    28.3H  2.25% irq29: 
> bge1
>     11 root         1 171   52     0K     8K RUN    166.6H  0.00% idle
>     63 root         1 -16    0     0K     8K -      121:55  0.00% yarrow
>     61 root         1 -32 -151     0K     8K WAIT    46:21  0.00% swi4: 
> clock sio
> [...]
> 
> ===
> 
> 
> Does anyone know whether a dual CPU system can help us improve the 
> situation? I was wondering if the software interrupt threads would be 
> divided between the two processors.
> 
> Any help/insight is greatly appreciated
> 
> Thanks!
> 
> --
> Marcos Bedinelli
> 
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