Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | Date | Wed, 28 Sep 2005 10:50:09 -0700 | From | "Seth, Rohit" <> | Subject | [patch] Reset the high water marks in CPUs pcp list |
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Recent changes in page allocations for pcps has increased the high watermark for these lists. This has resulted in scenarios where pcp lists could be having bigger number of free pages even under low memory conditions.
[PATCH]: Reduce the high mark in cpu's pcp lists.
Signed-off-by: Rohit Seth <rohit.seth@intel.com>
--- linux-2.6.14-rc2-mm1.org/mm/page_alloc.c 2005-09-27 10:03:51.000000000 -0700 +++ linux-2.6.14-rc2-mm1/mm/page_alloc.c 2005-09-27 18:01:21.000000000 -0700 @@ -1859,15 +1859,15 @@ pcp = &p->pcp[0]; /* hot */ pcp->count = 0; pcp->low = 0; - pcp->high = 6 * batch; + pcp->high = 4 * batch; pcp->batch = max(1UL, 1 * batch); INIT_LIST_HEAD(&pcp->list); pcp = &p->pcp[1]; /* cold*/ pcp->count = 0; pcp->low = 0; - pcp->high = 2 * batch; pcp->batch = max(1UL, batch/2); + pcp->high = pcp->batch + 1; INIT_LIST_HEAD(&pcp->list); } - 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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