On Thu, 2006-11-30 at 11:33 -0800, Christoph Lameter wrote: > On Thu, 30 Nov 2006, Peter Zijlstra wrote: > > > No, the forced allocation is to test the allocation hardness at that > > point in time. I could not think of another way to test that than to > > actually to an allocation. > > Typically we do this by checking the number of free pages in a zone > compared to the high low limits. See mmzone.h.
This doesn't work under high load because of direct reclaim. And if I go run direct reclaim to test if I can raise the free pages level to an acceptable level for the given gfp flags, I might as well do the whole allocation. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
