From: Benjamin Redelings I <bredelin@ucla.edu>
To: Rajagopal Ananthanarayanan <ananth@sgi.com>
Cc: riel@nl.linux.org, Linus Torvalds <torvalds@transmeta.com>,
linux-mm@kvack.org
Subject: Re: [DATAPOINT] pre7-6 will not swap
Date: Sat, 06 May 2000 07:03:54 -0700 [thread overview]
Message-ID: <3914264A.B6A660E@ucla.edu> (raw)
In-Reply-To: <39149B81.B92C8741@sgi.com>
> Once again, I'm back to asking, should we be swapping at all?
> Shouldn't shrink_mmap() be finding pages to throw out?
>
Thats a good question. However, it also misses part of the point.
The reason for the bad performance is not mainly that there is too
little swapout. The WRONG PAGES are swapped out! The system spends
most of its I/O bandwith doing page-in's.
Remember, on my system, the VM swapped out the quake ENGINE, which was
running 100% of the time, in order to keep unused daemons blocking on
select in core.
That is just wrong. Right?
-benRI
--
"I want to be in the light, as He is in the Light,
I want to shine like the stars in the heavens." - DC Talk, "In the
Light"
Benjamin Redelings I <>< http://www.bol.ucla.edu/~bredelin/
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next prev parent reply other threads:[~2000-05-06 14:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8evk0f$7jote$1@fido.engr.sgi.com>
2000-05-06 17:12 ` Rajagopal Ananthanarayanan
2000-05-06 4:25 ` Benjamin Redelings I
2000-05-06 19:35 ` Linus Torvalds
2000-05-06 5:35 ` Benjamin Redelings I
2000-05-06 21:46 ` Rik van Riel
2000-05-06 22:24 ` Rajagopal Ananthanarayanan
2000-05-06 14:03 ` Benjamin Redelings I [this message]
2000-05-07 0:22 ` Rik van Riel
2000-05-07 2:23 ` Linus Torvalds
2000-05-07 17:40 ` Rik van Riel
2000-05-07 17:53 ` Linus Torvalds
2000-05-07 19:13 ` Rajagopal Ananthanarayanan
2000-05-07 19:30 ` Linus Torvalds
2000-05-08 20:40 ` gprof data for pre7-6 Rajagopal Ananthanarayanan
2000-05-09 1:52 ` [DATAPOINT] pre7-6 will not swap Quintela Carreira Juan J.
2000-05-09 2:28 ` Rajagopal Ananthanarayanan
2000-05-09 2:33 ` Linus Torvalds
2000-05-09 3:31 ` Rajagopal Ananthanarayanan
2000-05-09 15:56 ` [DATAPOINT] pre7-8 swaps with FREE mem? Benjamin Redelings I
2000-05-06 20:12 ` PG_referenced and lru_cache (cpu%) Roger Larsson
2000-05-06 18:31 ` Rik van Riel
2000-05-06 22:16 ` Roger Larsson
2000-05-05 8:07 [DATAPOINT] pre7-6 will not swap Benjamin Redelings I
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