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Date:      Wed, 4 May 2011 15:00:16 +0800
From:      Alastair Hogge <agh@fastmail.fm>
To:        Michael Schmiedgen <schmiedgen@gmx.net>
Cc:        Olivier Smedts <olivier@gid0.org>, Mike Tancsa <mike@sentex.net>, Jack Vogel <jfvogel@gmail.com>, FreeBSD current mailing list <current@freebsd.org>
Subject:   Re: problems with em(4) since update to driver 7.2.2
Message-ID:  <20110504070015.GB2700@direwolf>
In-Reply-To: <4DC078BD.9080908@gmx.net>
References:  <BANLkTinrfZbO%2BMUDDuzsoaN1y-=_O8LgNA@mail.gmail.com> <4D94A354.9080903@sentex.net> <AANLkTik_XPsVWL-KqHkPic1KQ0SdCSk6u_9ykRefi3VE@mail.gmail.com> <BANLkTi=K5ASG9TWLAh5r%2Bzo9Wy1stMf9WA@mail.gmail.com> <BANLkTikPPzxZ6XRAaqrvdeXBp=Ydvz7hNg@mail.gmail.com> <BANLkTi=rhZ0dyO6Zq13jY6-NKVE8n24YyQ@mail.gmail.com> <4DC07013.9070707@gmx.net> <BANLkTi=DmQsVvJOaoxMr5GPOLkjs7sdTxQ@mail.gmail.com> <4DC078BD.9080908@gmx.net>

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On Tue, May 03, 2011 at 11:50:53PM +0200, Michael Schmiedgen wrote:
> On 03.05.2011 23:24, Jack Vogel wrote:
> > 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.
> 
> I doubled the nmbclusters as well. But nothing happened.
> 
> I have no load on this machine and nothing special
> configured.
> 
> Thanks,
>    Michael

Just a me too. I've been following -CURRENT(r221415) but I keep 
/sys/dev/e1000 at r218909 to keep em0 working without problems on -CURRENT.

I also tried 2x, & 4x 25600 for max mbuff clusters via kern.ipc.nmbclusters.
This didn't help.

-alastair




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