On Fri, Dec 02, 2005 at 03:18:11AM +0100, Andrea Arcangeli wrote: > On Fri, Dec 02, 2005 at 10:04:07AM +0800, Wu Fengguang wrote: > > btw, maybe it's time to lower the low_mem_reserve. > > There should be no need to keep ~50M free memory with the balancing patch. > > low_mem_reserve is indipendent from shrink_cache, because shrink_cache can't > free unfreeable pinned memory. > > If you want to remove low_mem_reserve you'd better start by adding > migration of memory across the zones with pte updates etc... That would > at least mitigate the effect of anonymous memory w/o swap. But > low_mem_reserve is still needed for all other kind of allocations like > kmalloc or pci_alloc_consistent (i.e. not relocatable) etc... Thanks for the clarification, I was concerning too much ;) Regards, Wu - 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/
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