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Date: Wed, 24 Nov 2010 15:14:46 +0100 From: Peter Schüller <scode@...tify.com> To: Dave Hansen <dave@...ux.vnet.ibm.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org, Mattias de Zalenski <zalenski@...tify.com>, linux-mm@...ck.org Subject: Re: Sudden and massive page cache eviction >> Do you have any large page (hugetlbfs) or other multi-order (> 1 page) >> allocations happening in the kernel? I forgot to address the second part of this question: How would I best inspect whether the kernel is doing that? Looking at the kmalloc() sizes from vmstat -m I have the following on one of the machines (so very few larger than 4096). But I suspect you are asking for something different? kmalloc-8192 52 56 8192 4 kmalloc-4096 33927 62040 4096 8 kmalloc-2048 338 416 2048 16 kmalloc-1024 76211 246976 1024 32 kmalloc-512 1134 1216 512 32 kmalloc-256 109523 324928 256 32 kmalloc-128 3902 4288 128 32 kmalloc-64 105296 105536 64 64 kmalloc-32 2120 2176 32 128 kmalloc-16 4607 4608 16 256 kmalloc-8 6655 6656 8 512 kmalloc-192 6546 9030 192 21 kmalloc-96 29694 32298 96 42 -- / Peter Schuller aka scode -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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