tcp: tcp_sendmsg() page recycling

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If our TCP_PAGE(sk) is not shared (page_count() == 1), we can set page
offset to 0.

This permits better filling of the pages on small to medium tcp writes.

"tbench 16" results on my dev server (2x4x2 machine) :

Before : 3072 MB/s
After  : 3146 MB/s  (2.4 % gain)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2011-12-04 07:05:17 +00:00 • committed by David S. Miller

parent 117632e64d

commit 761965eab3

1 changed files with 6 additions and 1 deletions

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net/ipv4/tcp.c

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