Major problem with "No buffer space available" errors

[Jin Guojun [NCS]]

Ok, this may have confirmed that it is a drive or motherboard (Intel specific) bug.

We had same problem about a month ago on Intel D875PBZP motherboard
with 5.1-RELEASE. It has a onboard Intel 10/100/1000 PRO (em) NIC.
We left the machine idle for a month, since the machine is useless and
we have plentiful other things to do.
This week, we decide to use this machine for high-speed network test.
Somehow, the machine just works without any change. I asked around
and no one here says that they changed any thing.

What I can suggest to you is to test a different NIC to see if the problem
persists. If it is, then there is a kernel problem, otherwise, it is Intel problem.

    -Jin

James West wrote:

> The machine has 256Mb of RAM, 36Gb  scsi drive and is a 1.3Ghz AMD cpu.
>
> I've switched MAXUSERS back to 0 now, right now before reboot my mbuf sysctl values read:
>
> # sysctl -a | grep mbuf
> kern.ipc.mbuf_wait: 32
> kern.ipc.nmbufs: 260000
>
> I'm stumped, stumped like a tree!
>
> James.
>
> ----- Original Message -----
> From: Lukas Ertl <l.ertl at univie.ac.at>
> Date: Wed, 16 Jul 2003 16:51:34 +0200 (CEST)
> To: James West <jwest254 at mail.com>
> Subject: Re: Major problem with "No buffer space available" errors
>
> > On Wed, 16 Jul 2003, James West wrote:
> >
> > > Hmm, kinda made that all confusing sounding, what i mean is i'm having
> > > the problem with MAXUSERS set to 0 and also when its set to 512.
> >
> > You didn't tell us how much memory that box has. MAXUSERS 512 is certainly
> > a huge number.
> >
> > FWIW, I'd suggest you'd go back to MAXUSERS 0 (the auto-tuning of FreeBSD
> > is quiet ok) and have a look at the mbuf clusters. You can increase them
> > at boot time if you see you haven't enough.
> >
> > regards,
> > le
> >
> > --
> > Lukas Ertl                             eMail: l.ertl at univie.ac.at
> > UNIX-Systemadministrator               Tel.:  (+43 1) 4277-14073
> > Zentraler Informatikdienst (ZID)       Fax.:  (+43 1) 4277-9140
> > der Universität Wien                  http://mailbox.univie.ac.at/~le/
> > _______________________________________________
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>
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