Messages in this thread |  | | Date | Tue, 20 Nov 2001 15:40:04 -0800 (PST) | Subject | Re: Swap | From | "David S. Miller" <> |
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From: Rik van Riel <riel@conectiva.com.br> Date: Tue, 20 Nov 2001 21:35:40 -0200 (BRST)
On Tue, 20 Nov 2001, David S. Miller wrote: > TLB misses add to the cost, and this overhead is more than > "noise". Well, this could have something to do with the fact that our page fault handler only maps in _1_ page at a time, so we're trapping into the pagefault handler every 4kB...
The Apache folks were keeping it mapped across requests, so even if it was "primed" (ie. pre-faulted), a read() into a static buffer was still significantly faster. - 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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