From: Christoph Rohland <cr@sap.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Daniel Stone <tamriel@ductape.net>,
riel@nl.linux.org, Zlatko Calusic <zlatko@iskon.hr>,
linux-mm@kvack.org, linux-kernel@vger.rutgers.edu
Subject: Re: [PATCH] Recent VM fiasco - fixed
Date: 10 May 2000 13:25:16 +0200 [thread overview]
Message-ID: <qwwn1lylk9v.fsf@sap.com> (raw)
In-Reply-To: Linus Torvalds's message of "Tue, 9 May 2000 12:50:47 -0700 (PDT)"
Linus Torvalds <torvalds@transmeta.com> writes:
> On 9 May 2000, Christoph Rohland wrote:
>
> > Linus Torvalds <torvalds@transmeta.com> writes:
> >
> > > Try out the really recent one - pre7-8. So far it hassome good reviews,
> > > and I've tested it both on a 20MB machine and a 512MB one..
> > I append the mem and task info from sysrq. Mem info seems to not
> > change after lockup.
>
> I suspect that if you do right-alt + scrolllock, you'll see it looping on
> a spinlock. Which is why the memory info isn't changing ;)
>
> But I'll double-check the shm code (I didn't test anything that did any
> shared memory, for example).
Juan Quintela's patch fixes the lockup. shm paging locked up on the
page lock.
Now I can give more data about pre7-8. After a short run I can say the
following:
The machine seems to be stable, but VM is mainly unbalanced:
[root@ls3016 /root]# vmstat 5
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
[...]
9 3 0 0 1460016 1588 11284 0 0 0 0 109 23524 4 96 0
9 3 1 7552 557432 1004 19320 0 1607 0 402 186 42582 2 89 9
11 1 1 41972 111368 424 53740 0 6884 2 1721 277 25904 0 89 10
11 1 0 48084 11896 276 59404 0 1133 1 284 181 4439 0 95 5
13 2 2 48352 466952 180 52960 5 158 4 39 230 6381 2 98 0
10 3 1 53400 934204 248 59940 498 1442 128 363 272 3953 1 99 0
11 3 1 52624 878696 300 59820 248 50 81 13 148 971 0 100 0
11 1 0 4556 883852 316 16164 855 0 214 1 127 25188 3 97 0
12 0 0 3936 525620 316 15544 0 0 0 0 109 33969 4 96 0
12 0 0 3936 2029556 316 15544 0 0 0 0 123 19659 4 96 0
11 1 0 3936 686856 316 15544 0 0 0 0 117 14370 3 97 0
12 0 0 3936 388176 320 15544 0 0 0 0 121 7477 3 97 0
10 3 1 47660 5216 88 19992 0 9353 0 2341 757 1267 0 97 3
VM: killing process ipctst
6 6 1 36792 484880 152 26892 65 12307 21 3078 1619 2184 0 94 6
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
10 1 1 39620 66736 148 29364 8 494 2 125 327 1980 0 100 0
VM: killing process ipctst
9 2 1 46536 627356 116 31072 87 8675 23 2169 1784 1412 0 96 4
10 0 1 46664 617368 116 31200 0 26 0 6 258 112 0 100 0
10 0 1 47300 607184 116 31832 0 126 0 32 291 110 0 100 0
So we are swapping out with lots of free memory and killing random
processes. The machine also becomes quite unresponsive compared to
pre4 on the same tests.
Greetings
Christoph
--
Christoph Rohland Tel: +49 6227 748201
SAP AG Fax: +49 6227 758201
LinuxLab Email: cr@sap.com
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next prev parent reply other threads:[~2000-05-10 11:25 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-05-08 17:21 [PATCH] Recent VM fiasco - fixed Zlatko Calusic
2000-05-08 17:43 ` Rik van Riel
2000-05-08 18:16 ` Zlatko Calusic
2000-05-08 18:20 ` Linus Torvalds
2000-05-08 18:46 ` Rik van Riel
2000-05-08 18:53 ` Zlatko Calusic
2000-05-08 19:04 ` Rik van Riel
2000-05-09 7:56 ` Daniel Stone
2000-05-09 8:25 ` Christoph Rohland
2000-05-09 15:44 ` Linus Torvalds
2000-05-09 16:12 ` Simon Kirby
2000-05-09 17:42 ` Christoph Rohland
2000-05-09 19:50 ` Linus Torvalds
2000-05-10 11:25 ` Christoph Rohland [this message]
2000-05-10 11:50 ` Zlatko Calusic
2000-05-11 23:40 ` Mark Hahn
2000-05-10 4:05 ` James H. Cloos Jr.
2000-05-10 7:29 ` James H. Cloos Jr.
2000-05-11 0:16 ` Linus Torvalds
2000-05-11 0:32 ` Linus Torvalds
2000-05-11 16:36 ` [PATCH] Recent VM fiasco - fixed (pre7-9) Rajagopal Ananthanarayanan
2000-05-11 1:04 ` [PATCH] Recent VM fiasco - fixed Juan J. Quintela
2000-05-11 1:53 ` Simon Kirby
2000-05-11 7:23 ` Linus Torvalds
2000-05-11 14:17 ` Simon Kirby
2000-05-11 23:38 ` Simon Kirby
2000-05-12 0:09 ` Linus Torvalds
2000-05-12 2:51 ` [RFC][PATCH] shrink_mmap avoid list_del (Was: Re: [PATCH] Recent VM fiasco - fixed) Roger Larsson
2000-05-11 11:15 ` [PATCH] Recent VM fiasco - fixed Rik van Riel
2000-05-11 5:10 ` Linus Torvalds
2000-05-11 10:09 ` James H. Cloos Jr.
2000-05-11 17:25 ` Juan J. Quintela
2000-05-11 23:25 ` [patch] balanced highmem subsystem under pre7-9 Ingo Molnar
2000-05-11 23:46 ` Linus Torvalds
2000-05-12 0:08 ` Ingo Molnar
2000-05-12 0:15 ` Ingo Molnar
2000-05-12 9:02 ` Christoph Rohland
2000-05-12 9:56 ` Ingo Molnar
2000-05-12 11:49 ` Christoph Rohland
2000-05-12 16:12 ` Linus Torvalds
2000-05-12 10:57 ` Andrea Arcangeli
2000-05-12 12:11 ` Ingo Molnar
2000-05-12 12:57 ` Andrea Arcangeli
2000-05-12 13:20 ` Rik van Riel
2000-05-12 16:40 ` Ingo Molnar
2000-05-12 17:15 ` Rik van Riel
2000-05-12 18:15 ` Linus Torvalds
2000-05-12 18:53 ` Ingo Molnar
2000-05-12 19:06 ` Linus Torvalds
2000-05-12 19:36 ` Ingo Molnar
2000-05-12 19:40 ` Ingo Molnar
2000-05-12 19:54 ` Ingo Molnar
2000-05-12 22:48 ` Rik van Riel
2000-05-13 11:57 ` Stephen C. Tweedie
2000-05-13 12:03 ` Rik van Riel
2000-05-13 12:14 ` Ingo Molnar
2000-05-13 14:23 ` Ingo Molnar
2000-05-19 1:58 ` Andrea Arcangeli
2000-05-19 15:03 ` Rik van Riel
2000-05-19 16:08 ` Andrea Arcangeli
2000-05-19 17:05 ` Rik van Riel
2000-05-19 22:28 ` Linus Torvalds
2000-05-11 11:12 ` [PATCH] Recent VM fiasco - fixed Christoph Rohland
2000-05-11 17:38 ` Steve Dodd
2000-05-09 10:21 ` Rik van Riel
-- strict thread matches above, loose matches on Subject: below --
2000-05-11 11:26 Jones D (ISaCS)
2000-05-12 7:50 ` Andrea Arcangeli
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