From: Marc-Christian Petersen <m.c.p@wolk-project.de>
Organization: Working Overloaded Linux Kernel
To: Andrea Arcangeli <andrea@suse.de>,
       Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: -rc7   Re: Linux 2.4.21-rc6
Date: Wed, 4 Jun 2003 12:35:07 +0200
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Cc: Georg Nikodym <georgn@somanetworks.com>,
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On Wednesday 04 June 2003 12:22, Andrea Arcangeli wrote:

Hi Andrea,

> are you really sure that it is the right fix?
> I mean, the batching has a basic problem (I was discussing it with Jens
> two days ago and he said he's already addressed in 2.5, I wonder if that
> could also have an influence on the fact 2.5 is so much better in
> fariness)
> the issue with batching in 2.4, is that it is blocking at 0 and waking
> at batch_requests. But it's not blocking new get_request to eat requests
> in the way back from 0 to batch_requests. I mean, there are two
> directions, when we move from batch_requests to 0 get_requests should
> return requests. in the way back from 0 to batch_requests the
> get_request should block (and it doesn't in 2.4, that is the problem)
do you see a chance to fix this up in 2.4?

ciao, Marc

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