From: Zlatko Calusic <zlatko@iskon.hr>
To: Rik van Riel <riel@conectiva.com.br>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Subtle MM bug
Date: 17 Jan 2001 19:53:31 +0100 [thread overview]
Message-ID: <87wvburowk.fsf@atlas.iskon.hr> (raw)
In-Reply-To: Rik van Riel's message of "Wed, 17 Jan 2001 15:48:39 +1100 (EST)"
Rik van Riel <riel@conectiva.com.br> writes:
> > Second test: kernel compile make -j32 (empirically this puts the
> > VM under load, but not excessively!)
> >
> > 2.2.17 -> make -j32 392.49s user 47.87s system 168% cpu 4:21.13 total
> > 2.4.0 -> make -j32 389.59s user 31.29s system 182% cpu 3:50.24 total
> >
> > Now, is this great news or what, 2.4.0 is definitely faster.
>
> One problem is that these tasks may be waiting on kswapd when
> kswapd might not get scheduled in on time. On the one hand this
> will mean lower load and less thrashing, on the other hand it
> means more IO wait.
>
Hm, if all tasks are waiting for memory, what is stopping kswapd to
run? :)
--
Zlatko
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next prev parent reply other threads:[~2001-01-17 18:53 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-07 20:59 Zlatko Calusic
2001-01-07 21:37 ` Rik van Riel
2001-01-07 22:33 ` Zlatko Calusic
2001-01-09 2:01 ` Zlatko Calusic
2001-01-17 4:48 ` Rik van Riel
2001-01-17 18:53 ` Zlatko Calusic [this message]
2001-01-18 1:32 ` Rik van Riel
[not found] <200101080602.WAA02132@pizda.ninka.net>
2001-01-08 6:42 ` Linus Torvalds
2001-01-08 13:11 ` Marcelo Tosatti
2001-01-08 16:42 ` Rik van Riel
2001-01-08 17:43 ` Linus Torvalds
2001-01-08 13:57 ` Stephen C. Tweedie
2001-01-08 17:29 ` Linus Torvalds
2001-01-08 18:10 ` Stephen C. Tweedie
2001-01-08 21:52 ` Marcelo Tosatti
2001-01-09 0:28 ` Linus Torvalds
2001-01-08 23:49 ` Marcelo Tosatti
2001-01-09 3:12 ` Linus Torvalds
2001-01-09 20:33 ` Marcelo Tosatti
2001-01-09 22:44 ` Linus Torvalds
2001-01-09 21:33 ` Marcelo Tosatti
2001-01-09 23:58 ` Linus Torvalds
2001-01-09 22:21 ` Marcelo Tosatti
2001-01-10 0:23 ` Linus Torvalds
2001-01-10 0:12 ` Marcelo Tosatti
2001-01-10 11:29 ` Stephen C. Tweedie
2001-01-11 3:30 ` Marcelo Tosatti
2001-01-11 9:42 ` Stephen C. Tweedie
2001-01-11 15:24 ` Marcelo Tosatti
2001-01-17 4:54 ` Rik van Riel
2001-01-08 16:45 ` Rik van Riel
2001-01-08 17:50 ` Linus Torvalds
2001-01-08 18:21 ` Rik van Riel
2001-01-08 18:38 ` Linus Torvalds
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