Re: RAID0 performance question

["JaniD++" <djani22@dynamicweb.hu>]

Hello, Zoltán!

----- Original Message ----- 
From: "Lajber Zoltan" <lajbi@lajli.gau.hu>
To: "JaniD++" <djani22@dynamicweb.hu>
Cc: <linux-raid@vger.kernel.org>
Sent: Saturday, November 26, 2005 6:11 PM
Subject: Re: RAID0 performance question


> On Sat, 26 Nov 2005, JaniD++ wrote:
>
> > Hello, Raz,
> >
> > Think this is not cpu usage problem. :-)
> > The system is divided to 4 cpuset, and each cpuset uses only one
disknode.
> > (CPU0->nb0, CPU1->nb1, ...)
>
> Seams to be CPU problem. Which kind of NIC do you have?

Intel xeon motherboard, intel e1000 x2. (64bit)
But i already write that, if i cut out the raid, and starts the 4 cat at one
time the traffic is rise to 780-800 Mbit! :-)

This is not hardware related problem.
Only tune, or missconfiguration problem.  - I think...

>
> > CPU2 states:   2.0% user  74.0% system    0.0% nice   3.0% iowait  18.0%
> > idle
> > CPU3 states:  10.0% user  57.0% system    0.0% nice   5.0% iowait  26.0%
>
> Do you have 4 cpu, or 2 HT cpu?

2x HT :-)

But in the previous top, it was an used system!

Thanks,

Janos

>
> Bye,
> -=Lajbi=----------------------------------------------------------------
>  LAJBER Zoltan               Szent Istvan Egyetem,  Informatika Hivatal
>  Most of the time, if you think you are in trouble, crank that throttle!
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