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Date:      Thu, 8 Apr 2010 11:36:05 -0700
From:      Jack Vogel <jfvogel@gmail.com>
To:        Mike Tancsa <mike@sentex.net>
Cc:        pyunyh@gmail.com, freebsd-stable@freebsd.org
Subject:   Re: em driver regression
Message-ID:  <k2o2a41acea1004081136gbcb0a57bw27678cbf742cbb6f@mail.gmail.com>
In-Reply-To: <201004081831.o38IVR3s043434@lava.sentex.ca>
References:  <201004081313.o38DD4JM041821@lava.sentex.ca> <7.1.0.9.0.20100408091756.10652be0@sentex.net> <201004081446.o38EkU7h042296@lava.sentex.ca> <20100408181741.GI5734@michelle.cdnetworks.com> <201004081831.o38IVR3s043434@lava.sentex.ca>

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Bigger question is will it fix Brandon's VirtualBox issue??

Jack


On Thu, Apr 8, 2010 at 11:31 AM, Mike Tancsa <mike@sentex.net> wrote:

> At 02:17 PM 4/8/2010, Pyun YongHyeon wrote:
>
>  Try this patch. It should fix the issue. It seems Jack forgot to
>> strip CRC bytes as old em(4) didn't strip it, probably to
>> workaround silicon bug of old em(4) controllers.
>>
>
> Thanks! The attached patch does indeed fix the dhclient issue.
>
>
>
>  It seems there are also TX issues here. The system load is too high
>> and sometimes system is not responsive while TX is in progress.
>> Because I initiated TCP bulk transfers, TSO should reduce CPU load
>> a lot but it didn't so I guess it could also be related watchdog
>> timeouts you've seen. I'll see what can be done.
>>
>
> Thanks for looking into that as well!!
>
>
>        ---Mike
>
>
>
>
> --------------------------------------------------------------------
> Mike Tancsa,                                      tel +1 519 651 3400
> Sentex Communications,                            mike@sentex.net
> Providing Internet since 1994                    www.sentex.net
> Cambridge, Ontario Canada                         www.sentex.net/mike
>
>



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