Messages in this thread | | | Date | Thu, 1 Dec 2005 02:37:14 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH 02/12] mm: supporting variables and functions for balanced zone aging |
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Wu Fengguang <wfg@mail.ustc.edu.cn> wrote: > > The zone aging rates are currently imbalanced,
ZONE_DMA is out of whack. It shouldn't be, and I'm not aware of anyone getting in and working out why. I certainly wouldn't want to go and add all this stuff without having a good understanding of _why_ it's out of whack. Perhaps it's just some silly bug, like the thing I pointed at in the previous email.
> the gap can be as large as 3 times,
What's the testcase?
> which can severely damage read-ahead requests and shorten their > effective life time.
Have you any performance numbers for this? - 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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