From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: tim.c.chen@linux.intel.com, netdev@vger.kernel.org, andi@firstfloor.org
Subject: Re: [PATCH net-next-2.6] inetpeer: lower false sharing effect
Date: Fri, 10 Jun 2011 06:47:50 +0200 [thread overview]
Message-ID: <1307681270.3210.9.camel@edumazet-laptop> (raw)
In-Reply-To: <20110609.204330.2090335955971650557.davem@davemloft.net>
Le jeudi 09 juin 2011 à 20:43 -0700, David Miller a écrit :
> From: Tim Chen <tim.c.chen@linux.intel.com>
> Date: Thu, 09 Jun 2011 17:03:55 -0700
>
> > When I retest with original 3.0-rc2 kernel, inet_putpeer no longer shows
> > up, wonder if dst->peer was not set for some reason.
>
> The overhead will only show up if an inetpeer entry exists for
> the destination IP address.
>
> You can force one to be created, for example, by making a TCP
> connection to that destination.
Or sending big frames, to force ip fragmentation (we store the id
generator in inetpeer cache)
next prev parent reply other threads:[~2011-06-10 4:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-09 6:26 [PATCH net-next-2.6] inetpeer: lower false sharing effect Eric Dumazet
2011-06-09 6:31 ` David Miller
2011-06-10 0:03 ` Tim Chen
2011-06-10 3:43 ` David Miller
2011-06-10 4:47 ` Eric Dumazet [this message]
2011-06-10 22:33 ` Tim Chen
2011-06-11 0:54 ` Changli Gao
2011-06-11 4:54 ` Eric Dumazet
2011-06-11 6:17 ` Changli Gao
2011-06-11 7:09 ` Andi Kleen
2011-06-10 4:31 ` Eric Dumazet
2011-06-10 17:05 ` Tim Chen
2011-06-10 17:17 ` Eric Dumazet
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