From: Andrea Arcangeli <andrea@suse.de>
To: Jeff Garzik <jgarzik@mandrakesoft.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@transmeta.com>
Subject: Re: pre5 VM livelock
Date: Tue, 30 Oct 2001 23:46:34 +0100 [thread overview]
Message-ID: <20011030234633.B1340@athlon.random> (raw)
In-Reply-To: <3BDF1999.CAF5D101@mandrakesoft.com>
In-Reply-To: <3BDF1999.CAF5D101@mandrakesoft.com>; from jgarzik@mandrakesoft.com on Tue, Oct 30, 2001 at 04:20:25PM -0500
On Tue, Oct 30, 2001 at 04:20:25PM -0500, Jeff Garzik wrote:
> 2.4.14-pre5 was looking very nice on my alpha, doing RPM builds. It
> seems to swap only when it needs to, and subjectively, performance
> appears better.
>
> However at this very moment, the kernel is livelocked. I can type on
> console and do sysrq to your heart's content... I can even sysrq-s and
> sync successfully. But no processing occurs. I can ping, but two ssh
> sessions are frozen.
>
> Key symptoms: Free swab 0Kb according to sysrq-m, and several processes
> in run state according to sysrq-t.
>
> Let me know if I should poke at this alpha further before rebooting.
>
> further info:
> free pages: 2560 kb (0kb highmem)
> ( active 2422 inactive 38578 free 320 )
> swap cache: add 850670 delete 850666 find 323063/440091 race 1+0
> free swap: 0kb
> 49074 pages of ram
> 786 free pages
> 1299 reserved pages
> 2683 pages shared
> 4 pages swap cached
> 4 pages in page table cache
> buffer memory: 168kb
>
> This behavior is reproducible, I am pretty sure.
can you reproduce with 2.4.14pre5aa1 too? The inactive list is pretty
big so maybe it's something else but maybe it's really mlocked anon
memory.
Andrea
next prev parent reply other threads:[~2001-10-30 22:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-30 21:20 pre5 VM livelock Jeff Garzik
2001-10-30 22:46 ` Andrea Arcangeli [this message]
2001-10-30 22:49 ` Linus Torvalds
2001-10-30 23:18 ` Andrea Arcangeli
2001-10-30 23:21 ` Linus Torvalds
2001-10-30 23:43 ` Jeff Garzik
2001-10-31 0:10 ` Linus Torvalds
2001-10-31 9:42 ` Marcelo Tosatti
2001-10-31 11:34 ` Jeff Garzik
2001-10-31 10:23 ` Marcelo Tosatti
2001-10-30 23:40 ` Linus Torvalds
2001-10-30 23:45 ` Jeff Garzik
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