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Re: [Linux-cluster] 2.6.11-based GFS's concurrent-read performance declined badly



how about rollback your kernel to 2.6.9 ?


On Sat, 19 Mar 2005 00:39:32 +0800, 孙俊伟 <sunjw onewaveinc com> wrote:
> Hi,
>        After I updated GFS code from CVS on 2005/03/15 and
> updated the kernel from kernel.org to version 2.6.11.3
> The GFS's concurrent-read performance declined badly, from 150MB/s to 50MB/s.
> When I used the kernel 2.6.9-1.667, the read rate was about 150MB/s,
> but now I only have 50MB/s with the same test. My test is to concurrently read
> (with pthread) 200 files on the same GFS directory.
> The single read/write performance was the same as the 2.6.9-based GFS, as my test.
> 
> So what's the matter? I'm amazed badly...
> 
> Thanks for any help.
> Luckey.
> 
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