[Linux-cluster] 2.6.11-based GFS's concurrent-read performance declined badly
孙俊伟
sunjw at onewaveinc.com
Fri Mar 18 16:39:32 UTC 2005
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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