Date: Tue, 24 Jul 2001 10:03:39 -0700 (PDT) From: Chris Phillips <chris@selkie.org> To: Joe Clarke <marcus@marcuscom.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FreeBSD Router Message-ID: <Pine.BSF.4.21.0107241001530.262-100000@shell.bchosting.com> In-Reply-To: <20010724123504.B6609-100000@shumai.marcuscom.com>
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Hey Joe,
[root@gateway1 /root]# netstat -m
489/784/34816 mbufs in use (current/peak/max):
488 mbufs allocated to data
1 mbufs allocated to packet headers
332/528/8704 mbuf clusters in use (current/peak/max)
1252 Kbytes allocated to network (62% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
Everything appears to be fine there unless I am not reading the output
right.
Any other suggestions?
Thanks.
-Chris Phillips
On Tue, 24 Jul 2001, Joe Clarke wrote:
> Usually packet loss starts to occur when buffer space runs short (or I/O
> mem on Cisco routers). How many MBUFs do you have configured? What does
> netstat -m say? You may want to tune your MBUFs in the kernel. IF you
> have a current CVS of -stable, checkout the tuning(7) manpage. The thing
> to tune would be NMBCLUSTERS. For my large machines, I set it to 16384.
> The default value is 1024, I think.
>
> Joe Clarke
>
> On Tue, 24 Jul 2001, Chris Phillips wrote:
>
> > Hey,
> >
> > I always hear people joking about how their 486 would make a great
> > router. I have a P166 w/ 128MB ram and three intel 10/100 NICs running as
> > my firewall/router. During peak times it is starting to have packet
> > loss. At what point is it too much for this kind of hardware? Does
> > anyone have any similar experiences? Is the packet loss a direct result
> > >from lack of processing power? There is approximately 250 ipfw rules.
> >
> > [root@gateway1 /root]# w
> > 9:26AM up 414 days, 12:54, 1 user, load averages: 0.00, 0.00, 0.00
> > USER TTY FROM LOGIN@ IDLE WHAT
> > root p0 penguin Thu08PM - w
> >
> > [root@gateway1 /root]# vmstat
> > procs memory page disks faults cpu
> > r b w avm fre flt re pi po fr sr ad0 md0 in sy cs us sy
> > id
> > 0 0 0 3236 79424 1 0 0 0 1 0 0 0 771 7 2 0 7
> > 93
> >
> > Anyone have any other suggestions for the packet loss?
> >
> > Peak times can be up to 6mbit/s sustained. This box routes 3 different
> > subnets that add up to 256 IPs. There are two Catalyst 3524s sitting
> > behind it. I'm not sure what other info I should include.
> >
> > All comments/suggestions are appreciated. Thanks.
> >
> > -Chris Phillips
> >
> > P.S. Please CC me as I am not on the list.
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the message
> >
> >
>
>
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