Fedora 16 feels slow

darrell pfeifer darrellpf at gmail.com
Wed Sep 14 21:00:24 UTC 2011

On Wed, Sep 14, 2011 at 13:28, Bruno Wolff III <bruno at wolff.to> wrote:

> On Wed, Sep 14, 2011 at 13:46:40 -0700,
>  Adam Williamson <awilliam at redhat.com> 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.
> I added myself to that bug, though I wasn't really seeing that much of
> 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

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