Wallstreet Ethernet

Wallstreet Ethernet

[Simon Stapleton]

Hi guys.

I was wondering if any progress has been made on the Wallstreet /
ethernet problems issue that was being discussed a while back?

I'm seeing the same issues - real slow connections, a shedload
of packet collisions and occasional crashes when the disk is
grinding.

I can probably gather some more stats if that would be helpful.

Wallstreet II, kernel 2.2.14p9 (I know, I know, but it seems pretty
stable and apart from the ethernet issue it all works),
standard LinuxPPC 1999 install.  192MB memory, some kind of
IBM disk.

If there's a patch out there, or a newer kernel fixes it, I'd be
grateful.  I'm a bit wary of the 2.3 kernels - I need working
hfs as well as linux, unfortunately - but I'm willing to give
them a go.  ISTR there was some question of whether it was the
disk itself that was causing the problems - If that's the case
I'll just go and shell out for an 18gig drive (not that I've been
looking for an excuse, or anything ;-)

I'd have a go at hacking the code if I had the time, but I'm working
18+ hour days at the moment.  Such is life <sigh>.

Simon

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Re: Wallstreet Ethernet

[Seanano]

  Is the Wallstreet II (never heard that name) the same thing as a
lombard?  Does it have a bronze keyboard?  I've got a lombard running
2.2.15pre20 from the linuxcare linux-pmac-stable kernel source.  I haven't
had any crashes other than when I was writing a kernel module... but that
was to be expected (Note for newbie kernel module writes: make sure to
sync a few times before reading a your new (untested) /proc entry ;-)  As
far as ethernet goes, I haven't seen any problems.  I can get over 7 Megs
per second without problem.  You might check to see if your connection is
half,full, or autonegotiation on duplex.  I had problems with auto and
full on another linuxppc machine (G4 sawtooth 450). I seem to get the best
performance with setting the port on the switch to half duplex.  I'm not
sure if this is a problem with autonegotiate or what...

Hope this helps,
Sean

On Mon, 8 May 2000, Simon Stapleton wrote:

>
> Hi guys.
>
> I was wondering if any progress has been made on the Wallstreet /
> ethernet problems issue that was being discussed a while back?
>
> I'm seeing the same issues - real slow connections, a shedload
> of packet collisions and occasional crashes when the disk is
> grinding.
>
> I can probably gather some more stats if that would be helpful.
>
> Wallstreet II, kernel 2.2.14p9 (I know, I know, but it seems pretty
> stable and apart from the ethernet issue it all works),
> standard LinuxPPC 1999 install.  192MB memory, some kind of
> IBM disk.
>
> If there's a patch out there, or a newer kernel fixes it, I'd be
> grateful.  I'm a bit wary of the 2.3 kernels - I need working
> hfs as well as linux, unfortunately - but I'm willing to give
> them a go.  ISTR there was some question of whether it was the
> disk itself that was causing the problems - If that's the case
> I'll just go and shell out for an 18gig drive (not that I've been
> looking for an excuse, or anything ;-)
>
> I'd have a go at hacking the code if I had the time, but I'm working
> 18+ hour days at the moment.  Such is life <sigh>.
>
> Simon
>
> --
> Your mouse has moved.  You must reboot Windows NT for these changes to be
> recognised.
>
>
>


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Re: Wallstreet Ethernet

[Wolfgang Denk]

In message <957801868.3916e58c8f2c3@rascal.ums.easynet.net> you wrote:
>
> I was wondering if any progress has been made on the Wallstreet /
> ethernet problems issue that was being discussed a while back?

I haven't seen anybody working on this. After the initial  discussion
(especially  with Benjamin Herrenschmidt) it seems clear that this is
a know problem which can cause Tx packets to become corrupted.

> I'm seeing the same issues - real slow connections, a shedload
> of packet collisions and occasional crashes when the disk is
> grinding.

... and probably corrupted data on outgoing connections.

> I can probably gather some more stats if that would be helpful.

Thanks, but this is probably not necessary - the problem seems clear.

> I'd have a go at hacking the code if I had the time, but I'm working
> 18+ hour days at the moment.  Such is life <sigh>.

Same for me - I don't know enough about the BMAC hardware, and  don't
have time to learn it right now.

I sent a message asking for help to Benjamin Herrenschmidt  and  Paul
Mackerras (on Monday, April 17), but got no reply yet :-(

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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