From: Eric Dumazet <edumazet@google.com>
Date: Thu, 13 Jun 2013 14:58:30 +0000 (-0700)
Subject: htb: reorder struct htb_class fields for performance
X-Git-Tag: v3.11-rc1~16^2~86
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca4ec90b31d1ecf01087c607933cf792057bc8bf;p=pandora-kernel.git

htb: reorder struct htb_class fields for performance

htb_class structures are big, and source of false sharing on SMP.

By carefully splitting them in two parts, we can improve performance.

I got 9 % performance increase on a 24 threads machine, with 200
concurrent netperf in TCP_RR mode, using a HTB hierarchy of 4 classes.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed