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William Lee Irwin III wrote: > On Fri, Jun 03, 2005 at 05:50:55PM -0700, Subrahmanyam Ongole wrote: > >>When we run our application on AMD Opteron processors, we are seeing a >>large number of L1_AND_L2_DTLB_MISSES. We used oprofile to measure >>these numbers. [...] > > > PAGE_SIZE at the moment is intimately tied to the MMU's notions of > address translation, which are determined by hardware. > And even if we were able to increase the PAGE_SIZE that the kernel uses, this wouldn't really help your TLB misses. You may be able to use "huge pages" for your workload, which can use the 2/4MB pages. There is some good documentation for it in Documentation/vm/ (and probably on the web). -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - 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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