Debug options update and 3.8-rc6

Bruno Wolff III bruno at wolff.to
Wed Feb 6 04:38:53 UTC 2013


On Tue, Feb 05, 2013 at 09:41:51 -0500,
   Josh Boyer <jwboyer at redhat.com> wrote:
>On Mon, Feb 04, 2013 at 05:01:36PM -0700, Kevin Fenzi wrote:
>> 3.8.0-0.rc6.git1.1.fc19.x86_64 with slub_debug=- acts slower here than
>> previous.
>>
>> gtkpref doesn't look very different, but graphics updates seem more
>> "bursty" for lack of a better word. Ie, I change desktops and 'snap'
>> everything updates.
>>
>> I'm not sure if I would call it unusable, but it's getting there. ;)
>>
>> So, perhaps CONFIG_DMA_API_DEBUG is causing things to be more bursty or
>> not as smooth.
>
>rc6.git1.1 enabled ext4 debugging.  git0.1 was the DMA debug, though
>it's cumulative so it's still enabled in git1.1.  Are you using ext4
>for your filesystems?

I'm using ext4 and things do seem to be a bit slower with the last couple 
kernels. I am continuing to disable slub debuging at boot.


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