Re: 2.4 PATCH: gcc 3.3 support

From: H. J. Lu <hjl_at_lucon.org>
Date: 2003-08-07 15:57:20
On Wed, Aug 06, 2003 at 09:53:33PM -0700, David Mosberger wrote:
> >>>>> On Wed, 6 Aug 2003 19:51:19 -0700, "H. J. Lu" <hjl@lucon.org> said:
> 
>   H> On Wed, Aug 06, 2003 at 09:59:34AM -0600, Bjorn Helgaas wrote:
>   >> On Wednesday 06 August 2003 9:44 am, H. J. Lu wrote: > This is
>   >> the patch backed ported from 2.6 kernel. However, I got
> 
>   >> > # modprobe xor > raid5: measuring checksumming speed > ia64 :
>   >> 81.920 MB/sec
> 
>   H> This number was under heavy load. I got
> 
>   H> Aug 6 09:03:38 gnu-2 kernel: raid5: measuring checksumming speed
>   H> Aug 6 09:03:38 gnu-2 kernel: ia64 : 98.304 MB/sec Aug 6 09:03:38
>   H> gnu-2 kernel: raid5: using function: ia64 (98.304 MB/sec)
> 
>   H> with 2.4 kernel when machine was idle.
> 
> I can't reproduce this.  With 2.6.0-test2 on a zx6000, I get:
> 
> raid5: measuring checksumming speed
>    ia64      :  2080.768 MB/sec
> raid5: using function: ia64 (2080.768 MB/sec)
> 

Mine is bigsur. I will try old 2.4.2x kernel to see what number I
will get. It may be just that bigsur has very poor performance on
xor.


H.J.
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Received on Thu Aug 7 02:00:45 2003

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