Thread (65 messages) 65 messages, 13 authors, 2012-12-19

Re: kswapd craziness in 3.7

From: Bruno Wolff III <hidden>
Date: 2012-12-05 03:02:49
Also in: lkml

On Tue, Dec 04, 2012 at 16:42:10 -0500,
   Johannes Weiner [off-list ref] wrote:
 kernel-3.7.0-0.rc7.git1.2.van.main.knurd.kswap.4.fc18.i686
and
 kernel-3.7.0-0.rc7.git1.2.van.main.knurd.kswap.4.fc18.x86_64
for over 24hours with no evidence of problems with kswapd"

Now waiting for results from Jiri, Zdenek and Bruno...
I have been running 3.7.0-0.rc7.git1.2.van.main.knurd.kswap.4.fc18.i686.PAE 
a bit over 23 hours and kswapd has accumalated one minute 8 seconds of 
CPU time. I did several yum operations during that time and didn't see 
kswapd spike to 90+% CPU usage as I had seen in the past. With some kernels 
I wasn't reliably triggering the kswapd issue, so it may not be long enough 
to know for sure that the problem is fixed.

I also should note that when I tried 3.7.0-0.rc7.git3.2.fc19.i686.PAE I 
did see problems with kswapd hitting 90+% usage of a CPU.

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