netdev - Re: [3.8-rc] regression: NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out

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Date:	Sun, 3 Feb 2013 16:34:30 +0100
From:	Jörg Otte <jrg.otte@...il.com>
To:	Francois Romieu <romieu@...zoreil.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [3.8-rc] regression: NETDEV WATCHDOG: eth0 (r8169): transmit
 queue 0 timed out

2013/1/6 Jörg Otte <jrg.otte@...il.com>:
> 2013/1/5 Francois Romieu <romieu@...zoreil.com>:
>> Can you check if things improve with v3.8-rc2 after removing :
>>
>> 1. 9ecb9aabaf634677c77af467f4e3028b09d7bcda
>>    r8169: workaround for missing extended GigaMAC registers
>> 2. d64ec841517a25f6d468bde9f67e5b4cffdc67c7
>>    r8169: enable internal ASPM and clock request settings
>
> Doesn't help for this problem.
>
> However this fixes a second issue for me:
> In 3.7.1 at startup the link came up after 15 sec.:
> grep r8169 dmesg.3.7.1
> [    1.956842] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
> [    1.957059] r8169 0000:02:00.0: irq 42 for MSI/MSI-X
> [    1.957161] r8169 0000:02:00.0 eth0: RTL8168evl/8111evl at..
> [    1.957163] r8169 0000:02:00.0 eth0: jumbo features [frames..
> [   13.575452] r8169 0000:02:00.0 eth0: link down
> [   13.575475] r8169 0000:02:00.0 eth0: link down
> [   15.181317] r8169 0000:02:00.0 eth0: link up
>
> In 3.8rc the time increased to 24 seconds:
> grep r8169 dmesg.3.8.0
> [    1.852546] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
> [    1.852765] r8169 0000:02:00.0: irq 42 for MSI/MSI-X
> [    1.852872] r8169 0000:02:00.0 eth0: RTL8168evl/8111evl at...
> [    1.852874] r8169 0000:02:00.0 eth0: jumbo features [frames...
> [   14.150212] r8169 0000:02:00.0 eth0: link down
> [   14.150229] r8169 0000:02:00.0 eth0: link down
> [   24.140263] r8169 0000:02:00.0 eth0: link up
>
> But with this revert I get the old performance:
> dmesg | grep r8169
> [    1.816613] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
> [    1.816832] r8169 0000:02:00.0: irq 42 for MSI/MSI-X
> [    1.816947] r8169 0000:02:00.0 eth0: RTL8168evl/8111evl at...
> [    1.816948] r8169 0000:02:00.0 eth0: jumbo features [frames...
> [   13.986401] r8169 0000:02:00.0 eth0: link down
> [   13.986422] r8169 0000:02:00.0 eth0: link down
> [   15.623631] r8169 0000:02:00.0 eth0: link up
>
> Thus I recommend to revert this too.
>
>> 3. e0c075577965d1c01b30038d38bf637b027a1df3
>>    r8169: enable ALDPS for power saving
>
> That's it! This fixes the problem for me!
>


We are closely before v3.8 and I didn't see a solution
so far.
What is the plan regarding this issue(s)?

Thanks, Jörg
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