From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net-next] ipv4: __mkroute_output() speedup
Date: Thu, 30 Sep 2010 21:16:42 -0700 (PDT) [thread overview]
Message-ID: <20100930.211642.135520056.davem@davemloft.net> (raw)
In-Reply-To: <1285797230.5211.173.camel@edumazet-laptop>
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 29 Sep 2010 23:53:50 +0200
> While doing stress tests with a disabled IP route cache, I found
> __mkroute_output() was touching three times in_device atomic refcount.
>
> Use RCU to touch it once to reduce cache line ping pongs.
...
> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Applied.
prev parent reply other threads:[~2010-10-01 4:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-29 21:53 [PATCH net-next] ipv4: __mkroute_output() speedup Eric Dumazet
2010-10-01 4:16 ` David Miller [this message]
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