Re: [Jfs-discussion] why so much iowait time in JFS?

[Rhyotte <rh...@my...>]

huanghua wrote:

>I did all the test in fedora RC1 ,originally with kernel 2.6.1,
>but I upgrade it to kernel 2.6.4
>
>
>
>I have a partition on my hard disk /dev/hda3, and I mkfs.jfs on it.
>I created 500,000 files on it and then removed them all.
>This create process took me about 230 seconds and the remove process
>took me about 200 seconds.
>
>At the second, I wanted to do it again, that is creating 500,000 files
>and then removing them.
>But this time with the command 'top' I found there was almoust 100%
>iowait cpu. So
>I will take me extrodinariy time to finish it.
>why? Who konws why?
>Why at the second time, there is so much iowait time?
>
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>  
>
Hello,
Part of this thread earlier has been about some anomylies in JFS and
early 2.6 kernels. Some users have reported very good luck with the
newer 2.6.7 kernel series.

Peace