100 Mbit on slow machine

100 Mbit on slow machine

[Lars Weitze]

Hi,

I am using a P200 MMX as an Fileserver. After i upgraded it to an 100
Mbit/s NIC (tulip chip and 3Com "Vortex" tried) i am getting the follwing
behaviour: The network stack seems to "block" when sending files to the
machine with full 100 Mbit/s. There are -no- kernel messages. Doing a ping
an the machine gives all ping packets back in "one bunch". Even after
stopping accesing the machine at full speed (stopping the transfer) i am
just getting this "packaged" ping reply (9000 ms and more).

A ping -f -s 65000 will also lock up the machine. Doing an ifdown -a ;
ifup -a resloves the problem until the next "flood".

Regards
CD
-- 
    "Ihre Meinung ist mir zwar widerlich, aber ich werde mich
     dafuer totschlagen lassen, dass sie sie sagen duerfen."
                                                        Voltaire

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Re: 100 Mbit on slow machine

[Jeremy Zawodny]

On Sat, Apr 27, 2002 at 07:56:09PM +0200, Lars Weitze wrote:
> Hi,
> 
> I am using a P200 MMX as an Fileserver. After i upgraded it to an 100
> Mbit/s NIC (tulip chip and 3Com "Vortex" tried) i am getting the follwing
> behaviour: The network stack seems to "block" when sending files to the
> machine with full 100 Mbit/s. There are -no- kernel messages. Doing a ping
> an the machine gives all ping packets back in "one bunch". Even after
> stopping accesing the machine at full speed (stopping the transfer) i am
> just getting this "packaged" ping reply (9000 ms and more).

Have you verified that the duplex settings are correct?  I've had
problems on more than one occasion with mismatched duplex on 100Mbit
cards (and switches).

Jeremy
-- 
Jeremy D. Zawodny     |  Perl, Web, MySQL, Linux Magazine, Yahoo!
<Jeremy@Zawodny.com>  |  http://jeremy.zawodny.com/

Re: 100 Mbit on slow machine

[Lars Weitze]

On Sat, 27 Apr 2002 15:19:05 -0700
Jeremy Zawodny <Jeremy@Zawodny.com> wrote:

> Have you verified that the duplex settings are correct?  I've had
> problems on more than one occasion with mismatched duplex on 100Mbit
> cards (and switches).

Know the problem. It's running full duplex, but there is an other server
an the same switch with the same network card making none of these
problems. Anyway. I've put a 10 Mbit board into it now and moved the big
harddisk to another PC.

Regards
CD
-- 
    "Ihre Meinung ist mir zwar widerlich, aber ich werde mich
     dafuer totschlagen lassen, dass sie sie sagen duerfen."
                                                        Voltaire

PGP-Key:          http://cd.kalkatraz.de
PGP fingerprint:  4950 8576 778F DEDF 85D1  C04D 586F 2C45 E714 E13A

Re: 100 Mbit on slow machine

[Jeremy Zawodny]

On Sun, Apr 28, 2002 at 03:26:02PM +0200, Lars Weitze wrote:
> On Sat, 27 Apr 2002 15:19:05 -0700
> Jeremy Zawodny <Jeremy@Zawodny.com> wrote:
> 
> > Have you verified that the duplex settings are correct?  I've had
> > problems on more than one occasion with mismatched duplex on 100Mbit
> > cards (and switches).
> 
> Know the problem. It's running full duplex, but there is an other server
> an the same switch with the same network card making none of these
> problems. Anyway. I've put a 10 Mbit board into it now and moved the big
> harddisk to another PC.

If you feel like messing with it anymore, the only thing I can suggest
is that you try the newer tulip driver from sourceforge.  I recally
you mentioning a tulip driver in your original post.

I've had the newer tulip driver solve odd problems that the current
driver had.  YMMV, of course.

Jeremy
-- 
Jeremy D. Zawodny     |  Perl, Web, MySQL, Linux Magazine, Yahoo!
<Jeremy@Zawodny.com>  |  http://jeremy.zawodny.com/