From: James A. Sutherland <jas88@cam.ac.uk>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Jonathan Morton <chromi@cyberspace.org>,
"Joseph A. Knapka" <jknapka@earthlink.net>,
linux-mm@kvack.org
Subject: Re: suspend processes at load (was Re: a simple OOM ...)
Date: Sun, 22 Apr 2001 21:36:09 +0100 [thread overview]
Message-ID: <i4g6etcda5nsrauuj8mrsme0mgf8bu1ein@4ax.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0104221610190.1685-100000@imladris.rielhome.conectiva>
On Sun, 22 Apr 2001 16:11:36 -0300 (BRST), you wrote:
>On Sun, 22 Apr 2001, James A.Sutherland wrote:
>
>> >But login was suspended because of a page fault,
>>
>> No, login was NOT *suspended*. It's sleeping on I/O, not suspended.
>>
>> > so potentially it will
>> >*also* get suspended for just as long as the hogs.
>>
>> No, it will get CPU time a small fraction of a second later, once the
>> I/O completes.
>
>You're assuming login won't have the rest of its memory (which
>it needs to do certain things) swapped out again in the time
>it waits for this page to be swapped in...
>
>... which is exactly what happens when the system is thrashing.
Except that we aren't thrashing, because the memory hog processes have
been suspended by this point and so we do have enough memory free for
login!
James.
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next prev parent reply other threads:[~2001-04-22 20:36 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-19 14:03 Jonathan Morton
2001-04-19 18:25 ` Dave McCracken
2001-04-19 18:32 ` James A. Sutherland
2001-04-19 20:23 ` Jonathan Morton
2001-04-20 12:14 ` Szabolcs Szakacsits
2001-04-20 12:02 ` Jonathan Morton
2001-04-20 14:48 ` Dave McCracken
2001-04-21 5:49 ` James A. Sutherland
2001-04-21 19:16 ` Joseph A. Knapka
2001-04-21 19:41 ` Jonathan Morton
2001-04-22 10:08 ` James A. Sutherland
2001-04-22 16:53 ` Jonathan Morton
2001-04-22 17:06 ` James A. Sutherland
2001-04-22 18:18 ` Jonathan Morton
2001-04-22 18:57 ` Rik van Riel
2001-04-22 19:41 ` James A. Sutherland
2001-04-22 20:33 ` Jean Francois Martinez
2001-04-22 20:21 ` Jonathan Morton
2001-04-22 20:36 ` Jonathan Morton
2001-04-22 19:01 ` James A. Sutherland
2001-04-22 19:11 ` Rik van Riel
2001-04-22 20:36 ` James A. Sutherland [this message]
2001-04-22 19:30 ` Jonathan Morton
2001-04-22 20:35 ` James A. Sutherland
2001-04-22 20:41 ` Rik van Riel
2001-04-22 20:58 ` James A. Sutherland
2001-04-22 21:26 ` Rik van Riel
2001-04-22 22:26 ` Jonathan Morton
2001-04-23 5:55 ` James A. Sutherland
2001-04-23 5:59 ` Rik van Riel
2001-04-21 20:29 ` Rik van Riel
2001-04-22 10:08 ` James A. Sutherland
-- strict thread matches above, loose matches on Subject: below --
2001-04-13 16:20 [PATCH] a simple OOM killer to save me from Netscape Rik van Riel
2001-04-16 12:17 ` suspend processes at load (was Re: a simple OOM ...) Szabolcs Szakacsits
2001-04-17 19:48 ` Rik van Riel
2001-04-18 21:32 ` Szabolcs Szakacsits
2001-04-18 20:38 ` James A. Sutherland
2001-04-18 23:25 ` Szabolcs Szakacsits
2001-04-18 22:29 ` Rik van Riel
2001-04-19 10:14 ` Stephen C. Tweedie
2001-04-19 13:23 ` Szabolcs Szakacsits
2001-04-19 2:11 ` Rik van Riel
2001-04-19 7:08 ` James A. Sutherland
2001-04-19 13:37 ` Szabolcs Szakacsits
2001-04-19 12:26 ` Christoph Rohland
2001-04-19 12:30 ` James A. Sutherland
2001-04-19 9:15 ` James A. Sutherland
2001-04-19 18:34 ` Dave McCracken
2001-04-19 18:47 ` James A. Sutherland
2001-04-19 18:53 ` Dave McCracken
2001-04-19 19:10 ` James A. Sutherland
2001-04-20 14:58 ` Rik van Riel
2001-04-21 6:10 ` James A. Sutherland
2001-04-19 19:13 ` Rik van Riel
2001-04-19 19:47 ` Gerrit Huizenga
2001-04-20 12:44 ` Szabolcs Szakacsits
2001-04-19 20:06 ` James A. Sutherland
2001-04-20 12:29 ` Szabolcs Szakacsits
2001-04-20 11:50 ` Jonathan Morton
2001-04-20 13:32 ` Szabolcs Szakacsits
2001-04-20 14:30 ` Rik van Riel
2001-04-22 10:21 ` James A. Sutherland
2001-04-20 12:25 ` Szabolcs Szakacsits
2001-04-21 6:08 ` James A. Sutherland
2001-04-20 12:18 ` Szabolcs Szakacsits
2001-04-22 10:19 ` James A. Sutherland
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