External ISDN TA Slow under 2.2.14

External ISDN TA Slow under 2.2.14

Post by sc.. » Tue, 12 Sep 2000 06:02:50



HI

I am trying to connect to the net using an external ISDN TA - works fine
under W2K, but Linux seems slow (circa 1K/s download).  This speeds up a
little if I set the speed in kppp down from 460800 to 115200
(bizarrely).  I have a UART com port - but its the same modem on the
same port that runs fast under Windows!!??

Any ideas or files I should be editing - my /etc/ppp/options file merely
says "lock".

TIA

Shaun

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Before you buy.

 
 
 

1. ISDN cards and SMP - 2.2.14

I've hear it said that ISDN cards aren't supported with SMP kernels.

If I compile a kernel with SMP and ISDN support I get a whole bunch of
messages of the form:

    depmod: *** Unresolved Symbols in /lob/modules/2.2.14-6.0/misc/isdn.o

and also for

    isdnloop.o, isdn_bsdcomp.o, hisax.o, eicon.o

but also

    wtd.o, wavefront.o, sound.o, soundcore.o, sb.o and loads of others.

Can I take to suggest that multi-processor machines will not only fail
with isdn, but won't do sound and a shed load of other stuff because of
broken drivers ?

If I try and load an isdn driver after booting with:

    modprobe -v hisax id=SedlbauerSC type=15 protocol=2 irq=11 io=0x278

it fails saying:

    /sbin/insmod /lib/modules/2.2.14-6.0/net/slhc.o
    /lib/modules/2.2.14-6.0/net/slhc.o: unresolved symbol
printk_Rdd132261

and in addition to printk, gives similar responses for memcmp, kmalloc,
kfree and ip_fast_csum.  It finishes by reporting:

    /lib/modules/2.2.14-6.0/net/slhc.o: insmod
/lib/modules/2.2.14-6.0/net/slhc.o failed
    /lib/modules/2.2.14-6.0/net/slhc.o: insmod hisax failed.

Is SMP support still developing ?  It seems a bit odd that SMP support
in drivers isn't routine.  Does it really make driver development much
more difficult ?  Is the situation any better in RH7 or kernel 2.4 ?

Cheers, J/.
--
John Beardmore

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