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.
