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Re: pagebuf_prepare_write doesn't kmap the page

To: Steve Lord <lord@xxxxxxx>
Subject: Re: pagebuf_prepare_write doesn't kmap the page
From: Jens Axboe <axboe@xxxxxxx>
Date: Wed, 31 Jan 2001 18:39:15 +0100
Cc: Marcelo Tosatti <marcelo@xxxxxxxxxxxxxxxx>, David Wragg <dpw@xxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <200101311738.f0VHc0Z32271@xxxxxxxxxxxxxxxxxxxx>; from lord@xxxxxxx on Wed, Jan 31, 2001 at 11:38:00AM -0600
References: <axboe@xxxxxxx> <200101311738.f0VHc0Z32271@xxxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Wed, Jan 31 2001, Steve Lord wrote:
> > You can easily disable the throttling of locked buffers by just
> > defining blk_started_io and blk_finished_io to do nothing. What
> > disk are you using, and how much RAM in the machine?
> This is a Segate ST39175LW - nothing to exciting. I am actually
> now not sure if the throttling code really has too much to do with it.

Depends on the RAM in the machine, but I don't think the throttling
is the problem either.

> In answer to your next message, yes dbench appears to be the only
> thing I can find which really suffers, so I am not too worried.


Jens Axboe

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