Re: sched-idle and disk-priorities for 2.6.X

[Pavel Machek <pavel _at_ xxxxxx>]

Hi!

> > ulimit -m 1
> > <some task>
> > 
> > should make that task run with extremely low priority, right?
> 
> Yeah, when the box is under memory pressure, pages from that
> task should never hit the active list.  Instead, they should
> always stay on the inactive list and the non-referenced pages
> from that app should get reclaimed.
> 
> OTOH, if the app keeps referencing all pages, maybe I need
> to tune up the aggressiveness a bit and also reclaim the
> referenced pages ... if the current patch doesn't work right
> I'll make a more aggressive one.

I'm afraid it needs to be more aggressive.

I made two programs, each walking over 150MB of memory, and ran them
at same time on 250MB machine. One of them with ulimit -m 1... Both
got about the same ammount of RAM and progressed at similar speed.

							Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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