[Bug 543617] Re: very slow filesystem I/O

[Surbhi Palande]

Kees Cook, I debugged this problem and found out that this is happening
because of waiting on ext4 journals. I can see currently there is a ext4
thread going on for doing journal commit in two phases:

Phase 1) wake up the journal commit threads
(Do some other work)
Phase 2) wait for the commit to finish.

Once that is done we should have a solution. I will follow-up this
thread and pick the solution from there.

-- 
very slow filesystem I/O
https://bugs.launchpad.net/bugs/543617
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