Messages in this thread |  | | Date | Wed, 28 Aug 2002 13:27:02 -0700 | From | Andrew Morton <> | Subject | Re: [patch] adjustments to dirty memory thresholds |
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William Lee Irwin III wrote: > > On Tue, Aug 27, 2002 at 09:39:09PM -0700, Andrew Morton wrote: > > These ratios are scaled so that as the highmem:lowmem ratio goes > > beyond 4:1, the maximum amount of allowed dirty memory ceases to > > increase. It is clamped at the amount of memory which a 4:1 machine > > is allowed to use. > > This is disturbing. I suspect this is only going to raise poor memory > utilization issues on highmem boxen.
The intent is to fix them. Allowing more than 2G of dirty data to float about seems unreasonable, and it pins buffer_heads.
But hey. The patch merely sets the initial value of /proc/sys/vm/dirty*, and those things are writeable.
> Of course, "f**k highmem" is such > a common refrain these days so that's probably falling on deaf ears.
On the contrary.
> AFAICT the OOM issues are largely a by-product of mempool allocations > entering out_of_memory() when they have the perfectly reasonable > alternative strategy of simply waiting for the mempool to refill.
I don't have enough RAM to reproduce this. Please send call traces up from out_of_memory(). - 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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