diff options
| author | Anton Blanchard <anton@samba.org> | 2011-03-27 14:57:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-28 22:26:32 -0700 |
| commit | a715dea3c8e9ef2771c534e05ee1d36f65987e64 (patch) | |
| tree | 7734586473abed25f7ec4b8423adbdba3d829a61 /lib/iomap_copy.c | |
| parent | 4910ac6c526d2868adcb5893e0c428473de862b5 (diff) | |
net: Always allocate at least 16 skb frags regardless of page size
When analysing performance of the cxgb3 on a ppc64 box I noticed that
we weren't doing much GRO merging. It turns out we are limited by the
number of SKB frags:
#define MAX_SKB_FRAGS (65536/PAGE_SIZE + 2)
With a 4kB page size we have 18 frags, but with a 64kB page size we
only have 3 frags.
I ran a single stream TCP bandwidth test to compare the performance of
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/iomap_copy.c')
0 files changed, 0 insertions, 0 deletions