netdev - Re: 2.6.19: very low transmit speed after suspend/resume with Sky2

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Message-ID: <20061202131833.GA3673@thinkpad.home.local>
Date:	Sat, 2 Dec 2006 14:18:33 +0100
From:	Tino Keitel <tino.keitel@...ei.de>
To:	netdev@...r.kernel.org
Subject: Re: 2.6.19: very low transmit speed after suspend/resume with Sky2

On Sat, Dec 02, 2006 at 10:16:28 +0100, Tino Keitel wrote:
> Hi folks,                                            
>                                                      
> since 2.6.19 I have the problem that I get lousy transmit speeds of < 1 
> mbit/s.
> 
> Here is a quick test, the 5th column is the transfer speed in mbit/s:
> 
> From the affected machine to my laptop over WLAN (the affected machine
> is connected to a Fast Ethernet switch):
> 
> $ nttcp -r -l 1400 -n 500 dose
> l   700000    8.16   0.04    0.6867    155.5469   824  101.04   22887.6     
> 1   700000    8.15   0.00    0.6873 560000.0000   500  61.37    50000000.0    
> 
> Only 0,68 mbit/s during transmit. :-(
> 
> From my laptop to the affected machine:
> 
> $ nttcp -l 1400 -n 5000 dose
> l  7000000    2.21   0.03   25.3427   1999.8572  5000  2262.74  178558.7     
> 1  7000000    2.25   0.07   24.8363    823.4810  9268  4110.41  136286.1 
> 
> This is ok, 25 mbit/s during receive, limited by the WLAN in the
> laptop.
> 
> After reboot:
> 
> $ nttcp -l 1400 -n 5000 dose
> l  7000000    2.04   0.03   27.5005   1749.8906  5000  2455.40  156240.2
> 1  7000000    2.08   0.06   26.9843    999.9464  9455  4556.00  168830.2
> 
> Now I got 27 mbit/s during receive, that's ok for WLAN.

Sorry, I should give the number for _transmit_ here. This was ok, too.

Regards,
Tino
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