Messages in this thread | | | Date | Sun, 22 Feb 2004 11:55:04 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH] bdi_congestion_funp (was: Re: [PATCH] per process request limits (was Re: IO scheduler, queue depth, nr_requests)) |
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Miquel van Smoorenburg <miquels@cistron.net> wrote: > > The pdflush-is-running-on-this-queue bit can probably remain as-is. It's > mostly meant to prevent 2 pdflush daemons from running the same queue. > I don't see much harm in pdflush #1 running on /dev/md0 which consists > of /dev/sda1 and /dev/sdb1 and pdflush #2 running on /dev/sdb2, right ?
Yes, having two pdflushes working the same spindle is a bit pointless but is presumably fairly harmless.
The most important thing here is to prevent pdflush from blocking on request exhaustion. Because while pdflush sleeps on a particular disk, all the others remain unserviced.
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