netdev - Re: [PATCH net-next-2.6] net: speedup udp receive path

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Date:	Thu, 29 Apr 2010 20:12:27 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	hadi@...erus.ca
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>, therbert@...gle.com,
	shemminger@...tta.com, netdev@...r.kernel.org,
	Eilon Greenstein <eilong@...adcom.com>,
	Brian Bloniarz <bmb@...enacr.com>
Subject: Re: [PATCH net-next-2.6] net: speedup udp receive path

On Thu, Apr 29, 2010 at 7:35 PM, jamal <hadi@...erus.ca> wrote:
>
> Same here - even in my worst case scenario 88.5% of 750Kpps > 600Kpps.
> Attached is history results to make more sense of what i am saying:
> we have net-next kernels from apr14, apr23, apr23 with changlis change,
> apr28, apr28 with your change. What you'll see is non-rps (blue) gets
> better and rps (Orange) gets better slowly then by apr28 it is worse.

Did the number of IPIs increase in the apr28 test? The finial patch
with Eric's change may introduce more IPIs. And I am wondering why
23rdcl-non-rps is better than before. Maybe it is the side effect of
my patch: enlarge the netdev_max_backlog.


-- 
Regards，
Changli Gao(xiaosuo@...il.com)
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