Messages in this thread | | | Date | Wed, 03 Mar 2010 13:45:00 +0100 | From | John Hughes <> | Subject | Re: [Bugme-new] [Bug 15426] New: Running many copies of bonnie++ on different filesystems seems to deadlock in sync |
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Jens Axboe wrote: > On Wed, Mar 03 2010, John Hughes wrote: > >> Just a thought. What exactly is sync(2) supposed to do - block until >> there are no more dirty pages, or block until all pages that were dirty >> when the sync was done are clean? In other words is the problem simply >> that pages are being dirtied faster than the sync is writing them out? >> > > Our sync is currently broken in that regard, since it'll wait for too > long. We have a debated patch going, I have included it below. Any > chance you could give it a whirl? > > The semantics of sync are supposed to be 'wait for dirty IO generated > BEFORE this sync call'. > Ok, I will try this patch and get back to you.
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