Messages in this thread | | | Date | Thu, 9 Dec 2004 15:07:13 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: page fault scalability patch V12: rss tasklist vs sloppy rss |
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On Thu, 9 Dec 2004, William Lee Irwin III wrote: > Unless the algorithms being compared are properly implemented, they're > straw men, not valid comparisons.
Sloppy rss left the rss in the section of mm that contained the counters. So that has a separate cacheline. The idea of putting the atomic ops in a group was to only have one exclusive cacheline for mmap_sem and the rss. Which could lead to more bouncing of a single cache line rather than bouncing multiple cache lines less. But it seems to me that the problem essentially remains the same if the rss counter is not split. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org 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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