Messages in this thread | | | From | "David S. Miller" <> | Date | Fri, 2 Feb 2001 15:31:41 -0800 (PST) | Subject | Re: sendfile+zerocopy: fairly sexy (nothing to do with ECN) |
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David Lang writes: > right, assuming that there is enough sendfile() benifit to overcome the > write() penalty from the stuff that can't be cached or sent from a file. > > my question was basicly are there enough places where sendfile would > actually be used to make it a net gain.
There are non-performance issues as well (really, all of these points have been mentioned in this thread btw). One is that since paged SKBs use only single-order page allocations, the memory allocation subsystem is stressed less than the current scheme where SLAB allocates multi-order pages to satisfy allocations of linear SKB data buffers.
This has consequences and benefits system wide.
Later, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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