On Wed, 2007-01-24 at 23:50 +1100, Nick Piggin wrote: > Peter Zijlstra wrote: > > On Tue, 2007-01-23 at 16:49 -0800, Christoph Lameter wrote: > > >>2. Insure rapid turnaround of pages in the cache. > > [...] > > > The only maybe valid point would be 2, and I'd like to see if we can't > > solve that differently - a better use-once logic comes to mind. > > There must be something I'm missing with that point. The faster > the turnaround of pagecache pages, the *less* efficiently the > pagecache is working (assuming a rapid turnaround means a high > rate of pages brought into, then reclaimed from pagecache). > > I can't argue that a smaller pagecache will be subject to a > higher turnaround given the same workload, but I don't know why > that would be a good thing.
I interpreted the issue as selecting the wrong pages for the 'working set'. Like not quickly evicting pages from a large streaming read, which then pushes out more useful pages. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
