Messages in this thread |  | | | Subject | Re: Linux 2.6.29 | | From | Andi Kleen <> | | Date | Tue, 24 Mar 2009 13:27:44 +0100 |
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Alan Cox <alan@lxorguk.ukuu.org.uk> writes:
>> > I have not had this problem since I applied Arjan's (for some reason >> > repeatedly rejected) patch to change the ioprio of the various writeback >> > daemons. Under some loads changing to the noop I/O scheduler also seems >> > to help (as do most of the non default ones) >> >> (link would be useful) > > > "Give kjournald a IOPRIO_CLASS_RT io priority" > > October 2007 (yes its that old)
One issue discussed back then (also for a similar XFS patch) was that having the kernel use the RT priorities by default makes them useless as user override.
The proposal was to have a new priority level between normal and RT for this, but noone implemented this.
-Andi
-- ak@linux.intel.com -- Speaking for myself only.
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