Subject: Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless
	driver
From: Zhu Yi <yi.zhu@intel.com>
To: Alessandro Suardi <alessandro.suardi@gmail.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org,
       James Ketrenos <jketreno@linux.intel.com>, netdev@vger.kernel.org
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References: <5a4c581d0603221724m391f5466l8a2af3ae7f0aacae@mail.gmail.com>
	 <20060322191057.304962a4.akpm@osdl.org>
	 <5a4c581d0603230602s1a868a4apbfd79ec2bc568011@mail.gmail.com>
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Organization: Intel Corp.
Date: Fri, 24 Mar 2006 11:41:14 +0800
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On Thu, 2006-03-23 at 15:02 +0100, Alessandro Suardi wrote:
> That scp test shows 50%ish - but that was a quickie. The VNC
>  client even reported a 719Kbps throughput down from the more
>  usual 11500Kbps it starts off with. The first scp I tried when the
>  sluggishness was intolerable was going at 200KB/s - which
>  shows the problem can easily get in the neighborhood of an
>  order of magnitude.

What kind of wireless encryption do you use? We turned off hardware
encryption by default recently as a workaround for a firmware restart
bug. You might want to load module with "modprobe ipw2200 hwcrypto=1"
and retest.

Thanks,
-yi

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