4.0 SMP problems?

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Hello,

there were reports that SMP is broken in NetBSD 4.0 - can
anyone  
confirm this? If so, any chance to narrow it down a bit,
trying to  
figure out when it broke? Or on what hardware?

If it's indeed a regression in 4.0 it needs to be fixed
before  
release, I'll have a dual G4 in the near future but I still
need  
reports with other hardware ( like 604, different G4
variants etc. )

have fun
Michael
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Hello,

On Sep 28, 2007, at 15:05, Michael Lorenz wrote:

> there were reports that SMP is broken in NetBSD 4.0 -
can anyone  
> confirm this? If so, any chance to narrow it down a
bit, trying to  
> figure out when it broke? Or on what hardware?

For the records - a freshly built 4.0_RC1 SMP kernel works
just fine  
on a Gigabit Ethernet PMac G4 with two 500MHz G4. I'll
torture it a  
bit more, let's see how it does a userland build with -j2.

have fun
Michael
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-> For the records - a freshly built 4.0_RC1 SMP kernel
works just fine  
-> on a Gigabit Ethernet PMac G4 with two 500MHz G4. I'll
torture it a  
-> bit more, let's see how it does a userland build with
-j2.
-> 

Is it just me, then?  What could account for the
differences?  I'm booting
from a scsi disk (Adaptec 29160) and I replaced the Rage 128
video card with
an ATI Radeon 7500.

Allen
-- 
Don't just do something, sit there.
 9:00AM  up 11 days, 11:59, 0 users, load averages: 0.84,
0.55, 0.41

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Hello,

On Oct 3, 2007, at 12:53, Allen Wong wrote:

> -> For the records - a freshly built 4.0_RC1 SMP
kernel works just  
> fine
> -> on a Gigabit Ethernet PMac G4 with two 500MHz G4.
I'll torture it a
> -> bit more, let's see how it does a userland build
with -j2.
> ->
>
> Is it just me, then?  What could account for the
differences?  I'm  
> booting
> from a scsi disk (Adaptec 29160) and I replaced the
Rage 128 video  
> card with
> an ATI Radeon 7500.

This G4 boots from an IDE disk and still has the R128 it
came with.  
I'd strongly suggest to try a uniprocessor kernel to check
if the  
problem is really SMP related.
Then, did you build your own kernels? If so please try a
/very/  
recent 4.0 GENERIC. Also, those links to dmesg and ofctl
output you  
posted earlier don't seem to work right now ( www.
submoron.org  
doesn't resolve )
Finally, do you run into the same problem when attempting to
boot  
from any IDE device?

have fun
Michael
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Michael,

-> This G4 boots from an IDE disk and still has the R128
it came with.  
-> I'd strongly suggest to try a uniprocessor kernel to
check if the  
-> problem is really SMP related.

I tried booting with a uniprocessor kernel with the same
results.

-> Then, did you build your own kernels? If so please try
a /very/  
-> recent 4.0 GENERIC. Also, those links to dmesg and
ofctl output you  

I downloaded the kernels from the NetBSD ftp site.  The full
path is:

/pub/NetBSD/NetBSD-4.0_RC2/macppc/binary/kernel/netbsd-GENER
IC.MP.gz
/pub/NetBSD/NetBSD-4.0_RC2/macppc/binary/kernel/netbsd-GENER
IC.gz

-> posted earlier don't seem to work right now ( www.
submoron.org  
-> doesn't resolve )

My apache server is back up now.  The files are located at:

http://www.submoron
.org/dmesg.txt
http://www.submoron
.org/ofctl.txt

-> Finally, do you run into the same problem when
attempting to boot  
-> from any IDE device?
-> 

I'll attach an IDE disk and test it.  Thank you for your
time and help.

Allen
-- 
If all about you there are people panicking while you remain
calm and serene, maybe you don't belong on Wall Street.
    Alan Abelson, editor Barron's
10:20PM  up 12 days,  1:19, 2 users, load averages: 0.19,
0.49, 0.64

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Hello,

On Oct 4, 2007, at 01:31, Allen Wong wrote:

> -> This G4 boots from an IDE disk and still has the
R128 it came with.
> -> I'd strongly suggest to try a uniprocessor kernel
to check if the
> -> problem is really SMP related.
>
> I tried booting with a uniprocessor kernel with the
same results.

Ok, so at least it's not SMP related.

> -> Then, did you build your own kernels? If so
please try a /very/
> -> recent 4.0 GENERIC. Also, those links to dmesg
and ofctl output you
>
> I downloaded the kernels from the NetBSD ftp site.  The
full path is:
>
>
/pub/NetBSD/NetBSD-4.0_RC2/macppc/binary/kernel/netbsd-GENER
IC.MP.gz
>
/pub/NetBSD/NetBSD-4.0_RC2/macppc/binary/kernel/netbsd-GENER
IC.gz

Definitely new enough.

We need to find out where the first trap happens, so
- - any chance to narrow it down a bit? How far -
approximately - did  
the kernel boot before faulting?
- - how old is your boot loader? I know ofwboot.xcf from 3.1
can load  
4.0 and -current kernels, older versions might cause funky
problems.

have fun
Michael
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Michael,

-> 4.0 and -current kernels, older versions might cause
funky problems.
-> 

That was it!  I installed the ofwboot.xcf from ftp and it
boots the 4.0
generic kernel.  Thanks!

Allen
-- 
My friends visited Silicon Valley and all I got was this
lousy sig.
10:00PM  up 1 day,  1:46, 1 user, load averages: 0.57, 0.55,
0.45

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Hello,

On Oct 7, 2007, at 01:12, Allen Wong wrote:

> -> 4.0 and -current kernels, older versions might
cause funky  
> problems.
> ->
>
> That was it!  I installed the ofwboot.xcf from ftp and
it boots the  
> 4.0 generic kernel.  Thanks!

Hmm, should probably go to a more prominent place in the
FAQ. Usually  
a too old bootloader chokes before even starting the
kernel.

have fun
Michael
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