On Fri, Mar 10, 2000 at 11:50:52AM +1100, Dan Horth wrote:
> Hiya - still have not got a reliable 56K modem connection. I have
> tried all sorts of init strings - forcing connections at lower
> speeds, etc.
>
> A few pertinent points relating to our situation:
>
> 1. a ping I have going to the modem we're dialled in to goes from
> around 125-250ms during normal operation to 7000ms, 15000ms, 25000ms
> and beyond just before the modem chokes and dies. this usually
> happens when I try do download some stuff... and we end up getting
> useless transfer rates (sub 1k / sec at the moment)
These are all internal modems? If so, are they all using a "standard"
serial IRQ, i.e., 3 or 4? If NOT IRQ 3 or 4, you may need to look up, get
and try using "irqtune". I've had a problem in the past with using a
modem on IRQ5, the problem being because the ISA hardware assigns a
low priority to IRQ5, so that almost everything else in the machine
gets a higher priority for interupt service than my modem resulting in
lots of missed bytes and the resulting PPP retransmissions and therefore
low throughput. This showed up in ifconfig as lots of errors.
Irqtune should be available at:
http://www.best.com/~cae/irqtune/irqtune.tgz
ftp://shell5.ba.best.com/pub/cae/irqtune.tgz
Fred
>
> 2. pppd exits due with the following error message in the logs:
>
> pppd[2701]: Terminating on signal 15.
>
> 3. on connecting I notice that software compression is being enabled:
>
> kernel: PPP BSD Compression module registered
> kernel: PPP Deflate Compression module registered
>
> 4. previously we were connected by another internal 56k ISA modem -
> and a 33.6 external modem - both of these allowed speeds of up to 5
> or 6 k a second quote reliably so I'm pretty sure it's not the
> hardware or phone lines.
>
> 5. I'm having the same problems on both a server set up as a fresh
> 6.1 install and another which is a 6.0 to 6.1 upgrade. our previous
> connection and speed with the internal modem was on a 6.0 setup - not
> sure if that's going to make a difference? the 33.6 works fairly
> reliably and quickly with 6.0 and 6.1 setups.
>
> 6. during testing at different connection and compression speeds I
> received the following modprobe errors, but don't know what they mean
> or how to troubleshoot:
>
> modprobe: can't locate module binfmt-0000
> modprobe: can't locate module binfmt-67b8
> modprobe: can't locate module binfmt-0809
>
> if anyone has any ideas as to what's going on or how to force a
> reliable (and reasonable speed) link - or what these modprobe errors
> relate to then I'd love to hear from you! :)
>
> -----
> Nitro - 3D Visualisation, Graphics & Animation
> Ph (+61 2) 9810 5177 - Fx (+61 2) 9810 0199
> http://www.nitro.com.au/
>
>
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--
---- Fred Smith -- [EMAIL PROTECTED] ----------------------------
But God demonstrates his own love for us in this:
While we were still sinners,
Christ died for us.
------------------------------- Romans 5:8 (niv) ------------------------------
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