Messages in this thread Patch in this message | | | Date | Sun, 19 Dec 2004 23:07:54 -0800 | From | Andrew Morton <> | Subject | Re: 2.6.10-rc3: kswapd eats CPU on start of memory-eating task |
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Nick Piggin <nickpiggin@yahoo.com.au> wrote: > > On Sun, 2004-12-19 at 22:21 -0500, Rik van Riel wrote: > > On Mon, 20 Dec 2004, Con Kolivas wrote: > > > > > I still suspect the thrash token patch even with the swap token timeout > > > at 0. Is it completely disabled at 0 or does it still do something? > > > > It makes it harder to page out pages from the task holding the > > token. I wonder if kswapd should try to steal the token away > > from the task holding it, so in effect nobody holds the token > > when the system isn't under a heavy swapping load. > > > > In that case, the first thing we need to do is disable thrash token > completely, and retest that. We still don't know for sure that it is > the problem. > > I don't have the code in front of me at the moment, but I'll be able > to send a patch to do that in a couple of hours, if nobody beats me > to it.
This should disable the thrashing control code?
--- 25/mm/rmap.c~a 2004-12-19 23:05:58.759420936 -0800 +++ 25-akpm/mm/rmap.c 2004-12-19 23:06:43.105679280 -0800 @@ -395,6 +395,8 @@ int page_referenced(struct page *page, i { int referenced = 0; + ignore_token = 1; + if (page_test_and_clear_young(page)) referenced++; _ - 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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