From: Alexander Duyck Date: Thu, 6 Jan 2011 14:29:57 +0000 (+0000) Subject: ixgbe: cleanup flow director hash computation to improve performance X-Git-Tag: v2.6.38-rc1~403^2~29 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=905e4a4163c4e807daf1f1f6b8f958e762a834a8;p=pandora-kernel.git ixgbe: cleanup flow director hash computation to improve performance This change cleans up the layout of the flow director data, and the algorithm used to calculate the hash resulting in a 35x / 3500% performance increase versus the old flow director hash computation. The overall effect is only a 1% increase in transactions per second though due to the fact that only 1 packet in 20 are actually hashed upon. TCP_RR before: Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 60.00 23059.27 16384 87380 TCP_RR after: Socket Size Request Resp. Elapsed Trans. Send Recv Size Size Time Rate bytes Bytes bytes bytes secs. per sec 16384 87380 1 1 60.00 23239.98 16384 87380 Signed-off-by: Alexander Duyck Tested-by: Stephen Ko Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- Reading git-diff-tree failed