Messages in this thread | | | Date | Thu, 21 Jun 2001 16:50:37 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | Re: Linux 2.4.5-ac15 |
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On Thu, 21 Jun 2001, Daniel Phillips wrote:
> On Thursday 21 June 2001 07:44, Marcelo Tosatti wrote: > > On Thu, 21 Jun 2001, Mike Galbraith wrote: > > > On Thu, 21 Jun 2001, Marcelo Tosatti wrote: > > > > Ok, I suspect that GFP_BUFFER allocations are fucking up here (they > > > > can't block on IO, so they loop insanely). > > > > > > Why doesn't the VM hang the syncing of queued IO on these guys via > > > wait_event or such instead of trying to just let the allocation fail? > > > > Actually the VM should limit the amount of data being queued for _all_ > > kind of allocations. > > > > The problem is the lack of a mechanism which allows us to account the > > approximated amount of queued IO by the VM. (except for swap pages) > > Coincidence - that's what I started working on two days ago, and I'm moving > into the second generation design today. Look at 'queued_sectors'. I found > pretty quickly it's not enough, today I'm adding 'submitted_sectors' to the > soup. This will allow me to distinguish between traffic generated by my own > thread and other traffic.
Could you expand on this, please ?
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