Date: Tue, 24 Jul 2001 12:38:26 -0400 (EDT) From: Joe Clarke <marcus@marcuscom.com> To: Chris Phillips <chris@selkie.org> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: FreeBSD Router Message-ID: <20010724123504.B6609-100000@shumai.marcuscom.com> In-Reply-To: <Pine.BSF.4.21.0107240923050.262-100000@shell.bchosting.com>
next in thread | previous in thread | raw e-mail | index | archive | help
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 > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010724123504.B6609-100000>