Messages in this thread | | | Date | Tue, 20 Nov 2001 14:23:38 -0800 | From | Andrew Morton <> | Subject | Re: Swap |
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"David S. Miller" wrote: > > From: Rik van Riel <riel@conectiva.com.br> > Date: Tue, 20 Nov 2001 20:05:05 -0200 (BRST) > > Consider this a VM bug, mmap() really should be more efficient. > > read() is always going to be faster until mmap() can > use large page mappings for the user. This is why > mmap() is slower. > > Even if the whole thing is cached in memory, read() will > always be faster.
Could you please explain further? What's more expensive than the copy? - 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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