Messages in this thread | | | Subject | Re: [PATCH 0/5] make slab gfp fair | From | Peter Zijlstra <> | Date | Thu, 17 May 2007 19:53:50 +0200 |
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On Thu, 2007-05-17 at 10:30 -0700, Christoph Lameter wrote: > On Thu, 17 May 2007, Peter Zijlstra wrote: > > > > 2. It seems to be based on global ordering of allocations which is > > > not possible given large systems and the relativistic constraints > > > of physics. Ordering of events get more expensive the bigger the > > > system is. > > > > > > How does this system work if you can just order events within > > > a processor? Or within a node? Within a zone? > > > > /me fails again.. > > > > Its about ensuring ALLOC_NO_WATERMARKS memory only reaches PF_MEMALLOC > > processes, not joe random's pi calculator. > > Watermarks are per zone?
Yes, but the page allocator might address multiple zones in order to obtain a page.
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