LinuxSA Mailing list archives

  From: Adam Hawes <adam@overfiend.ace.net.au>
  To  : Dean.Gawler@equifax.com.au <Dean.Gawler@equifax.com.au>
  Date: Thu, 15 Jun 2000 20:57:12 +0930

Re: Modem throughput issue

> Now that I've got a 2.2.14 kernel, irqtune doesn't seem to
> work and even moderate disk/cpu activity causes the serial
> port to effectively "stall". The only way that I can get
> decent throughput (ie. 3.5kb/sec or faster with my 56K
> modem) is to stop doing anything that causes disk activity,
> otherwise I'm lucky to get 2-2.5kb/sec.
> 
> Is this a common problem?? How do people out there solve
> it?? I'm reasonably sure that it's related to interrupt
> priorities, the problem is how to fix it. Any help would
> be much appreciated.

I use irqtune on an old 486 running 2.2.5... It is hammered pretty hard
(being a NFS server for /home) while i am using things like netscape,
and the throughput is generally constant around 2.5-3 k/sec.  I never
got any faster than this when the modem was connected to my K6III/400
which was not loaded because I am at the furthest end of a real crappy
connection.

I had some difficulty with IRQtune when i installed it, but it was so
long ago now that I can't remember what it was.  It did work though.


Cheers,
Adam

-- 
Adam Hawes

Web:       http://overfiend.iwarp.com
Email:     adam@overfiend.ace.net.au
ICQ:       2492016

Voicemail: +61 (08) 8219-3238
Fax:       +61 (08) 8219-3238

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