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Message-ID: <5a4c581d0603251448k1df0c7bdob1f7a2a39749a8be@mail.gmail.com>
Date: Sat, 25 Mar 2006 23:48:29 +0100
From: "Alessandro Suardi" <alessandro.suardi@gmail.com>
To: "Zhu Yi" <yi.zhu@intel.com>
Subject: Re: [2.6.16-gitX] heavy performance regression in ipw2200 wireless driver
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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On 3/24/06, Zhu Yi <yi.zhu@intel.com> wrote:
> 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.

The issue seems to have vanished in more recent kernel snapshots
 (namely, 2.6.16-git3 and -git5 exhibited the problem; -git8 and -git9
 did not).

I will holler if the problem pops up again... thanks,

--alessandro

 "Dreamer ? Each one of us is a dreamer. We just push it down deep because
   we are repeatedly told that we are not allowed to dream in real life"
     (Reinhold Ziegler)
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