From: jamal <hadi@cyberus.ca>
To: John Ye <johny@asimco.com.cn>
Cc: David Miller <davem@davemloft.net>,
netdev@vger.kernel.org, kuznet@ms2.inr.ac.ru, pekkas@netcore.fi,
jmorris@namei.org, kaber@coreworks.de
Subject: Re: [PATCH: 2.6.13-15-SMP 3/3] network: concurrently run softirq network code on SMP
Date: Fri, 21 Sep 2007 07:43:43 -0400 [thread overview]
Message-ID: <1190375023.4261.34.camel@localhost> (raw)
In-Reply-To: <00e601c7fc31$4ed29890$ca8510ac@asimco>
On Fri, 2007-21-09 at 17:25 +0800, John Ye wrote:
> David,
>
> Thanks for your reply. I understand it's not worth to do.
>
> I have made it a loadable module to fulfill the function. it mainly for busy
> NAT gateway server with SMP to speed up.
>
John,
It was a little hard to read your code; however, it does seems to me
like will cause a massive amount of packet reordering to the end hosts
using you as the gateway especially when it is receiving a lot of
packets/second.
You have a queue per CPU that connects your bottom and top half and
several CPUs that may service a single NIC in your bottom half.
one cpu in either bottom/top half has to be slightly loaded and you
loose the ordering where incoming doesnt match outgoing packet order.
cheers,
jamal
next prev parent reply other threads:[~2007-09-21 11:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <002b01c7fb86$02b27df0$d6ddfea9@JOHNYE1>
2007-09-20 17:46 ` [PATCH: 2.6.13-15-SMP 3/3] network: concurrently run softirq network code on SMP David Miller
2007-09-21 9:25 ` John Ye
2007-09-21 11:43 ` jamal [this message]
2007-09-21 11:47 ` jamal
2007-09-23 3:45 ` [PATCH: 2.6.13-15-SMP 3/3] network: concurrently run softirqnetwork " john ye
2007-09-20 13:04 [PATCH: 2.6.13-15-SMP 3/3] network: concurrently run softirq network " john ye
2007-09-20 18:11 ` Stephen Hemminger
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