From: Jens Axboe <axboe@suse.de>
To: Miles Lane <miles@speakeasy.org>
Cc: Rui Sousa <rsousa@grad.physics.sunysb.edu>,
Rik van Riel <riel@conectiva.com.br>,
linux-kernel@vger.kernel.org,
Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Subject: Re: Blocked processes <=> Elevator starvation?
Date: Fri, 3 Nov 2000 11:04:04 -0800 [thread overview]
Message-ID: <20001103110404.I521@suse.de> (raw)
In-Reply-To: <20001027134603.A513@suse.de> <Pine.LNX.4.21.0010280408520.1157-100000@localhost.localdomain> <20001027202710.A825@suse.de> <39FC78BF.90607@speakeasy.org> <20001029144543.D615@suse.de> <39FE16A3.5070608@speakeasy.org>
In-Reply-To: <39FE16A3.5070608@speakeasy.org>; from miles@speakeasy.org on Mon, Oct 30, 2000 at 04:47:31PM -0800
On Mon, Oct 30 2000, Miles Lane wrote:
> I just reproduced the problem in test10-pre7. Here's the
> output you requested:
Thanks
> vmstat 1
> procs memory swap io system cpu
> r b w swpd free buff cache si so bi bo in cs us sy id
> 1 1 2 0 43736 77680 59548 0 0 0 1279 908 2637 1 8 91
> 0 2 3 0 43072 78040 59592 0 0 0 1660 1281 4119 5 6 89
>
> >>> /var/log/kernel output stopped being emitted here <<<
> >>> CRUNCH! <<<
>
> 0 2 3 0 42656 78384 59592 0 0 0 259 271 551 0 0 100
> 0 2 3 0 42656 78384 59592 0 0 0 5 271 499 0 0 100
Yes, I would assume this would be the case. The current vm does not
behave very well once the cache has been filled up. I'm not knocking
the new vm, this has been a problem for some time. Basically I/O
performance goes badly down the drain at this point.
--
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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next prev parent reply other threads:[~2000-11-03 17:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.21.0010080105520.22898-100000@duckman.distro.conectiva>
2000-10-27 16:22 ` Blocked processes <=> Elevator starvation? Rui Sousa
2000-10-27 16:31 ` Rik van Riel
2000-10-27 20:46 ` Jens Axboe
2000-10-28 3:14 ` Rui Sousa
2000-10-28 3:27 ` Jens Axboe
2000-10-29 19:21 ` Miles Lane
2000-10-29 22:45 ` Jens Axboe
2000-10-29 22:20 ` Jeff V. Merkey
2000-10-31 0:47 ` Miles Lane
2000-11-03 19:04 ` Jens Axboe [this message]
2000-11-06 1:03 ` Giuliano Pochini
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