Re: -rc7 Re: Linux 2.4.21-rc6

Jens Axboe
2003-06-04T10:28:38Z

On Wed, Jun 04 2003, Marc-Christian Petersen wrote:
> 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?

Nick posted a patch to do so the other day and asked people to test.

--
Jens Axboe