netdev - Re: Realtek RTL8111B serious performance issues

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Date:	Wed, 18 Jul 2007 15:25:28 -0600 (MDT)
From:	john@...eSkyTours.com
To:	Francois Romieu <romieu@...zoreil.com>
cc:	netdev@...r.kernel.org
Subject: Re: Realtek RTL8111B serious performance issues

On Wed, 18 Jul 2007, Francois Romieu wrote:

> john@...eSkyTours.com <john@...eSkyTours.com> :
> [...]
>> Anyone have any suggestions for solving this problem?
>
> Try 2.6.23-rc1 when it is published or apply against 2.6.22 one of:
> http://www.fr.zoreil.com/people/francois/misc/20070628-2.6.22-rc6-r8169-test.patch

Unfortunately, the 20070628 patch did not make any difference.

> http://www.fr.zoreil.com/linux/kernel/2.6.x/2.6.22-rc6/r8169-20070628/

I tried various patches from that directory (aren't most or all of them
included in the 20070628 patch?), but none of them helped either.

This problem could be very difficult to track down.  Like I said, it
definately effects emacs and firefox being "drawn" on a remote computer.
Ping times, however, are not that bad:

PING 192.168.26.150: 56 data bytes
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=0. time=0.287 ms
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=1. time=0.279 ms
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=2. time=0.196 ms
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=3. time=0.201 ms
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=4. time=0.159 ms
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=5. time=0.148 ms
64 bytes from dyn26-1.blueskytours.com (192.168.26.150): icmp_seq=6. time=0.150 ms

Also, wget gets good throughput when retrieving files.

It just seems to be X traffic which is extremely slow.  Using the old
Linksys 10/100 PCI NIC, emacs comes up virtually instantaneously.  Using the
integrated Realtek 8111B, emacs takes 10 seconds to draw.

Thank you very much for trying to help.

John
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