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Date: Tue, 3 May 2011 14:24:36 -0700
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From: Jack Vogel <jfvogel@gmail.com>
To: Michael Schmiedgen <schmiedgen@gmx.net>
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Cc: Olivier Smedts <olivier@gid0.org>,
	FreeBSD current mailing list <current@freebsd.org>,
	Mike Tancsa <mike@sentex.net>
Subject: Re: problems with em(4) since update to driver 7.2.2
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If you get the setup receive structures fail, then increase the nmbclusters.

If you use standard MTU then what you need are mbufs, and standard size
clusters (2K).
Only when you use jumbo frames will you need larger.

You must configure enough, its that simple.

Jack


On Tue, May 3, 2011 at 2:13 PM, Michael Schmiedgen <schmiedgen@gmx.net>wrote:

> Hi,
>
> I have the very same problem.
>
> - GENERIC 9.0-CURRENT (April 28)
> - em0 PRO/1000 7.2.3
>
> - "em0: Could not setup receive structures"
>
> On 03.05.2011 10:58, Olivier Smedts wrote:
>
>> I tried increasing kern.ipc.nmbjumbo* (is it what you suggested ?).
>> Values doubled :
>> kern.ipc.nmbjumbo16: 6400
>> kern.ipc.nmbjumbo9: 12800
>> kern.ipc.nmbjumbop: 25600
>>
>> And unloaded / reloaded the kernel module. Still no luck, same
>> problem, on latest 9-CURRENT (r221363).
>>
>
> Same here.
>
> If I should provide some more configuration settings,
> please let me know.
>
> Michael
>
>