On Wed, Sep 14, 2011 at 13:28, Bruno Wolff III <bruno@xxxxxxxx> wrote:
On Wed, Sep 14, 2011 at 13:46:40 -0700,I added myself to that bug, though I wasn't really seeing that much of
Adam Williamson <awilliam@xxxxxxxxxx> wrote:
>
> They weren't; see my numbers in the related bug
> (https://bugzilla.redhat.com/show_bug.cgi?id=735268 ). The debug
> overhead appears to have gotten much heavier in 3.1.
a slow down in graphics. (I have an rv280 which might not have the issue
that later radeon cards were having.) My issue seems to be related to
disk I/O. I am not sure if it is heavier cpu use in journalling, raid or
encryption or if the actual I/O is slower. But it seems that I/O heavy
activities such as yum updates and kernel builds are taking several times
longer than they were a few weeks ago (in rawhide).
I'm using the latest rawhide kernel. During times of heavy I/O the system becomes very unresponsive. The cursor will stop moving long enough to count to between 5 and 10. I know it happens with heavy network I/O so it might be the particular driver in my case. Not sure if the slow-down is true for other types of I/O. This has been true for all of the recent rawhide kernels.
darrell
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