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SMP and Networkperformance

SMP and Networkperformance
Mon, 16 Jan 2006 12:20:44 GMT
Hi,

yesterday I've made a somewhat strange experience.
I put a second processor in my old HP Netserver LHPro and boot up in 
SMP-Mode, no probs.

I than start to copy some large (400MB and up) files from my other pc to 
the server.
I noticed that the troughput was cut down to nearly 1/3 compared to single 
cpu-mode.

Reming out os2apic gives me the missing 2/3 back.
I tried this several times, everytime the same result.

Any ideas ??

System eCS 1.05 

Greetings
Rainer

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Re: SMP and Networkperformance
Wed, 31 May 2006 14:29:28 +100
Hi Rainer

> yesterday I've made a somewhat strange experience.
> I put a second processor in my old HP Netserver LHPro and boot up in 
> SMP-Mode, no probs.

  > Reming out os2apic gives me the missing 2/3 back.
> I tried this several times, everytime the same result.
> Any ideas ??

Your NIC driver probably doesnt handle SMP to well, I stick with Intel 
and SMC cards myself, and no problems on a 2 of 4 way SMP box.

Cheers
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