Messages in this thread | | | Date | Wed, 4 Jun 2003 12:42:15 +0200 | From | Jens Axboe <> | Subject | Re: -rc7 Re: Linux 2.4.21-rc6 |
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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
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