[2693] in linux-net channel archive
Re: Multiport hellp
daemon@ATHENA.MIT.EDU (Jon Lewis)
Sat Apr 27 15:06:37 1996
Date: Fri, 26 Apr 1996 02:40:46 -0400 (EDT)
From: Jon Lewis <jlewis@inorganic5.fdt.net>
To: Doug Ledford <dledford@dialnet.net>
cc: Linux Net Mailing List <linux-net@vger.rutgers.edu>
In-Reply-To: <Pine.LNX.3.91.960425233113.27160A-100000@news.dialnet.net>
On Thu, 25 Apr 1996, Doug Ledford wrote:
> Out of curiousity, how many ports do you have actually in use on ewok?
> My 64 port teminal and ppp server has 62 28.8Kbd modems and 1 56Kbd
> CSU/DSU hooked into it, so as you can guess, it gets hit pretty hard. It
ewok had 64 modems for about 2 weeks if its current 27 day uptime. Now
it's down to about 30, as I've moved many to the cyclades system.
Here's 24 hours worth of ip accounting for it
IP accounting rules
pkts bytes prot source destination ports
902K 262M all ewok.fdt.net localnet/24 n/a
678K 246M all localnet/24 ts-sn1-na.51.fdt.net/25 n/a
838K 263M all localnet/24 ewok.fdt.net n/a
558K 26M all ts-sn1-na.51.fdt.net/25 localnet/24 n/a
1205K 73M all ts-sn1-na.51.fdt.net/25 anywhere n/a
1360K 542M all anywhere ts-sn1-na.51.fdt.net/25 n/a
The /25 subnet is the modems on ewok.
> had a lockup since. Although, I should note the there WOULD have been
> two lockups on the machine if it hadn't been for the printk-return pairs,
> I found two rp: WARNING: rp_do_transmit called with info->tty==NULL
Hmm...I'm still using 1.08/1.09 (1.08 with most of 1.09's patches) but
should upgrade to 1.10.
> I had this same problem with the RocketPort, panic without an oops,
> lockup, reset. No logging info. Except once. It came back with an oops
> in rp_write one time. It seems to me the race condition is somewhere in
> either both drivers or in the kernel, in which case the ppp writing to
> the tty structure causes the oops. It can also happen with the getty in
> use or with init if it is writing to the serial port.
I'd think it must be outside the multiport drivers...unless they share
some common code.
> > Endor's P100 parts and case just came in today...so I'll start building
> > that this afternoon. I suspect endor will magically stabilize as ewok
> > did once it's on a P100 board.
>
> I would agree to a certain extent, but if you push it from 40 to 64, I
> bet it gives you problems :(
It better not...or the cyclades stuff goes back. They guaranteed
stability with 64 ports on a linux box.
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