As mentioned in the FUDCon kernel talk, we are trying to figure out exactly what causes the massive slowdown for some people with debug kernels. At this point, debug is completely off in the rawhide kernel. Every update this week will turn on more debug options until we find out which one is causing the slowdown. For this to work, we need people testing rawhide proper (not rawhide-nodebug). So please, if you can update daily and give us feedback when you hit a wall, we would really appreciate it. Feedback should be sent to kernel@lists.fedoraproject.org
Thanks, Justin
On Tue, Jan 22, 2013 at 09:44:43 -0600, "Justin M. Forbes" jmforbes@linuxtx.org wrote:
As mentioned in the FUDCon kernel talk, we are trying to figure out exactly what causes the massive slowdown for some people with debug kernels. At this point, debug is completely off in the rawhide kernel. Every update this week will turn on more debug options until we find out which one is causing the slowdown. For this to work, we need people testing rawhide proper (not rawhide-nodebug). So please, if you can update daily and give us feedback when you hit a wall, we would really appreciate it. Feedback should be sent to kernel@lists.fedoraproject.org
Recently I have seen yum slowness with kernel-PAE-3.8.0-0.rc3.git1.2.fc19.i686, which was unexpected. I'm going to try an update using kernel-PAE-3.8.0-0.rc4.git1.1.fc19.i686 a little later this morning and see if I see the same thing. Previously I had only been seeing this with debug kernels. I don't know if this time is due to the kernel or something else.
On Tue, Jan 22, 2013 at 09:58:48 -0600, Bruno Wolff III bruno@wolff.to wrote:
Recently I have seen yum slowness with kernel-PAE-3.8.0-0.rc3.git1.2.fc19.i686, which was unexpected. I'm going to try an update using kernel-PAE-3.8.0-0.rc4.git1.1.fc19.i686 a little later this morning and see if I see the same thing. Previously I had only been seeing this with debug kernels. I don't know if this time is due to the kernel or something else.
3.8.0-0.rc4.git1.1.fc19 doesn't seem to help whatever the problem is. Since the 3.8 kernels seem OK stability wise, I'm going to try it on an f18 machine where yum updates go pretty fast and see if they are still fast.
On Tue, Jan 22, 2013 at 13:03:28 -0600, Bruno Wolff III bruno@wolff.to wrote:
On Tue, Jan 22, 2013 at 09:58:48 -0600, Bruno Wolff III bruno@wolff.to wrote:
3.8.0-0.rc4.git1.1.fc19 doesn't seem to help whatever the problem is. Since the 3.8 kernels seem OK stability wise, I'm going to try it on an f18 machine where yum updates go pretty fast and see if they are still fast.
On f18 with 3.8.0-0.rc4.git1.1.fc19 yum is running fast. So something else in rawhide is slowing down yum on my machine. I'll use the f18 machine to check for what might be triggering my issue with debug kernels.
kernel@lists.fedoraproject.org
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Bruno Wolff III -
Justin Forbes