netdev - Re: b44: regression in 2.6.22 (resend)

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Date:	Sun, 27 May 2007 21:45:00 +0200
From:	Michael Buesch <mb@...sch.de>
To:	Maximilian Engelhardt <maxi@...monizer.de>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"linux-wireless" <linux-wireless@...r.kernel.org>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Jeff Garzik <jgarzik@...ox.com>,
	Gary Zambrano <zambrano@...adcom.com>, netdev@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: b44: regression in 2.6.22 (resend)

On Sunday 27 May 2007 21:25:17 Maximilian Engelhardt wrote:
> 2.6.22-rc3:
> 
> [  5] local 192.168.1.2 port 46557 connected with 192.168.1.1 port 5001
> [  5]  0.0-60.4 sec  58.9 MBytes  8.18 Mbits/sec
> [  4] local 192.168.1.2 port 5001 connected with 192.168.1.1 port 51633
> [  4]  0.0-63.1 sec  7.27 MBytes    967 Kbits/sec

Why do we have two different measurements here? Is one TX and one RX?
Which one?

> koala:~# ping -c10 192.168.1.1
> PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
> 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.243 ms
> 64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.234 ms
> 64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.238 ms
> 64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.235 ms
> 64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.230 ms
> 64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=0.317 ms
> 64 bytes from 192.168.1.1: icmp_seq=7 ttl=64 time=0.232 ms
> 64 bytes from 192.168.1.1: icmp_seq=8 ttl=64 time=0.232 ms
> 64 bytes from 192.168.1.1: icmp_seq=9 ttl=64 time=0.228 ms
> 64 bytes from 192.168.1.1: icmp_seq=10 ttl=64 time=0.238 ms
> 
> --- 192.168.1.1 ping statistics ---
> 10 packets transmitted, 10 received, 0% packet loss, time 8997ms
> rtt min/avg/max/mdev = 0.228/0.242/0.317/0.031 ms
> 
> System responsiveness was the same as with 2.6.21.1.
> 
> wget got 11.23M/s, again same as 2.6.21.1.
> 
> 
> 2.6.22-rc2-mm1:
> 
> [  5] local 192.168.1.2 port 42198 connected with 192.168.1.1 port 5001
> [  5]  0.0-60.1 sec    402 MBytes  56.1 Mbits/sec
> [  4] local 192.168.1.2 port 5001 connected with 192.168.1.1 port 48598
> [  4]  0.0-63.0 sec    177 MBytes  23.6 Mbits/sec

So with -mm (with ssb) you actually get better performace
then with plain 2.6.22-rc3?

Can you elaborate a bit more about what you get an what you expect
on which kernel?

-- 
Greetings Michael.
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