On Mon, 15 Oct 2007, Nick Piggin wrote: > On Monday 15 October 2007 16:54, Alok kataria wrote: > > > > Looking at the tlb_flush code path and its co-relation with > > ARCH_FREE_PTE_NR, on x86-64 architecture. I think we still don't use > > the ARCH_FREE_PTE_NR of 5350 as the caching value for the mmu_gathers > > structure, instead fallback to using 506 due to some typo errors in > > the code. > > > > Found this link in the archives. > > > > http://www.ussg.iu.edu/hypermail/linux/kernel/0509.1/1821.html > > > > I don't think anything has been done on this yet (looked at 2.6.23). > > Do let me know if its only a typo that needs a fix, or we are still > > waiting for some other other changes to come into effect. > > ARCH_FREE_PTE_NR should probably just get ripped out completely at > this point. Something similar (but working) could be added back if > anybody actually had a workload where it helps to increase the mmu > batch size.
Agreed. No hurry, but thanks to Alok for reminding us. CC'ing Ben since he's the one most active in mmu_gathering these days. CC'ing Thomas lest he's puzzling over it in the x86 merge. Hugh - 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/
