Linux-Hams archive - May 1998: Re: scc module buffers only up to 8 packets, with quick hack..

Re: scc module buffers only up to 8 packets, with quick hack..

Richard Adams (terhi.victor@logonet.com)
Fri, 1 May 1998 15:26:03 +0000 (GMT)

According to Arjan Filius: While burning my CPU.
>
> Hi Richard,
>
> On Fri, 1 May 1998, Richard Adams wrote:
>
> > Date: Fri, 1 May 1998 07:24:17 +0000 (GMT)
> > From: Richard Adams <hkaxmv.evjp@mail.dy.fi>
> > Reply-To: wzxvien@roskapostia.tunk.net
> > To: kwdqqli.jahl@tnc.org
> > Cc: hnj@amazon.com
> > Subject: Re: scc module buffers only up to 8 packets, with quick hack..
> >
> > According to Arjan Filius: While burning my CPU.
> > >
> > > Hi,
> > >
> > > Perhaps you could try to ping with a preload some bigger as you used now?
> > > And share the results please (could be verry intresting when you don't
> > > find that buffer limit on the scc.o module at kernel 2.1.98)
> >
> > ping -l20 -s8 -i5 -c22 works like a charm.
> >
> > Maybe your problem is caused by not having enough tx/rx buffers defined in
> > /etc/z8530drv.conf
>
> That seems indeed to be the problem, but since using kernel 2.1.??
> (z8530drv-utils-3.0(.1)) using (sccinit.c,line 110/117):
> {"rxbuffers", I_WARN},
> It seems not possible to use the rx/tx-buffers in /etc/z8530drv.conf
>
> Any ideas ?
>
> i'm rather sure that pinging from a remote host with the preload option
> only echo'd about the last 7/8 packets, until changing that constant in
> the kernel source, which solved it for me.
> But there must be an other way.
>
> It's a bit strange/confusing to me why you don't seem to have the problem

Well let me explane what i do to test this, normaly i use kernel 2.0.33 with
ax25-module-14f z8530drv-2.4c, i have absolutly no problem here, only rx/tx
over and underruns. I have 2.1.xx kernels also which i try every time a new
kernel comes out, but i never see any big differances, ie your problem. This
weekend i dont have any time to dig around as its V/U/SHF contest weekend.
I will look harder next week when i get more time.

>
> Arjan Filius
> Email: ybgvogct@roskapostia.tunk.net
> --------------------------------------------------------------
> Argh! All right, so how am I supposed to work with Linux when
> everything's already been done?! Can't these people leave some
> broken MSDOS like parts so there's problems left to solve!?....
> 

-- 
Regards Richard.
qjn@earthlink.net