Messages in this thread |  | | Date | Tue, 02 Apr 2013 17:00:12 +0200 | | From | Jiri Slaby <> | | Subject | Re: Excessive stall times on ext4 in 3.9-rc2 |
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On 04/02/2013 04:27 PM, Mel Gorman wrote: > I'm testing a page-reclaim-related series on my laptop that is partially > aimed at fixing long stalls when doing metadata-intensive operations on > low memory such as a git checkout. I've been running 3.9-rc2 with the > series applied but found that the interactive performance was awful even > when there was plenty of free memory. > > I activated a monitor from mmtests that logs when a process is stuck for > a long time in D state and found that there are a lot of stalls in ext4. > The report first states that processes have been stalled for a total of > 6498 seconds on IO which seems like a lot. Here is a breakdown of the > recorded events.
Just a note that I am indeed using ext4 on the affected machine for all filesystems I have except for an efi partition...
-- js suse labs
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