* Re: Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12
2009-05-13 0:00 Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12 Denys Fedoryschenko
@ 2009-05-13 5:01 ` David Miller
2009-05-13 8:01 ` Denys Fedoryschenko
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: David Miller @ 2009-05-13 5:01 UTC (permalink / raw)
To: sparclinux
From: Denys Fedoryschenko <denys@visp.net.lb>
Date: Wed, 13 May 2009 03:00:11 +0300
> Hi
>
> Got recently lockups on T2000 machine. Machine is relatively new.
> While compiling with crazy makeflags "-j17" getting such messages.
> Process which was being compiled stuck, and i cannot terminate it.
That's not "crazy", I use -j32 as a minumum for my builds. :-)
I started seeing these hangs with 2.6.30-rcX and will try to
bisect it down when I get back from my week long cruise.
It's definitely a post 2.6.29 regression.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12
2009-05-13 0:00 Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12 Denys Fedoryschenko
2009-05-13 5:01 ` David Miller
@ 2009-05-13 8:01 ` Denys Fedoryschenko
2009-05-14 3:32 ` David Miller
2009-05-14 3:35 ` David Miller
3 siblings, 0 replies; 5+ messages in thread
From: Denys Fedoryschenko @ 2009-05-13 8:01 UTC (permalink / raw)
To: sparclinux
On Wednesday 13 May 2009 08:01:46 David Miller wrote:
> From: Denys Fedoryschenko <denys@visp.net.lb>
> Date: Wed, 13 May 2009 03:00:11 +0300
>
> > Hi
> >
> > Got recently lockups on T2000 machine. Machine is relatively new.
> > While compiling with crazy makeflags "-j17" getting such messages.
> > Process which was being compiled stuck, and i cannot terminate it.
>
> That's not "crazy", I use -j32 as a minumum for my builds. :-)
>
> I started seeing these hangs with 2.6.30-rcX and will try to
> bisect it down when I get back from my week long cruise.
>
> It's definitely a post 2.6.29 regression.
Well, buying this t2k was a mistake of management, but it is kind of useful
for porting my "heavily bitfielded" userspace app for big-endian's. Other
choice is only PS3 or emulators in this country :-(
Also this expensive Sun box is terribly slow... dunno if it is a bug of
software/kernel or hardware, but it starts from latency while compiling
single 100kbyte source, ending even time to make -j17 for a linux kernel
source. With such price, at x86, i will see bytes popping from server like a
popcorn, getting dizzy because of speed.
But seems linux support of both, kind of weak, i will try to fill
bugreports/patches.
PS3 also had problems with WPA2 + dhcp. Recent commits with maintainers
changes shows that Sony guys handling this question (not only for games) and
maybe it can be fixed.
Sorry for offtopic :-) Now back to main subject...
I'm not sure, but maybe even 2.6.28.7, i had something similar.
Kernel where hangs occuiring ,i forgot to tell, but it is visible in dmesg -
2.6.29.3. I will try meanwhile falling back to older kernels and to bisect by
myself, if i will not become elder person while compiling kernel.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12
2009-05-13 0:00 Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12 Denys Fedoryschenko
2009-05-13 5:01 ` David Miller
2009-05-13 8:01 ` Denys Fedoryschenko
@ 2009-05-14 3:32 ` David Miller
2009-05-14 3:35 ` David Miller
3 siblings, 0 replies; 5+ messages in thread
From: David Miller @ 2009-05-14 3:32 UTC (permalink / raw)
To: sparclinux
The Niagara-T1 is incredibly slow as individual cpus.
Roughly the equivalent of a 300Mhz UltraSPARC-II.
The gain is that you have 32 of them.
Set your expectations appropriately.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12
2009-05-13 0:00 Sun fire T2000,BUG: NMI Watchdog detected LOCKUP on CPU12 Denys Fedoryschenko
` (2 preceding siblings ...)
2009-05-14 3:32 ` David Miller
@ 2009-05-14 3:35 ` David Miller
3 siblings, 0 replies; 5+ messages in thread
From: David Miller @ 2009-05-14 3:35 UTC (permalink / raw)
To: sparclinux
From: Denys Fedoryschenko <denys@visp.net.lb>
Date: Wed, 13 May 2009 11:01:35 +0300
> I'm not sure, but maybe even 2.6.28.7, i had something similar.
> Kernel where hangs occuiring ,i forgot to tell, but it is visible in
> dmesg - 2.6.29.3. I will try meanwhile falling back to older kernels
> and to bisect by myself, if i will not become elder person while
> compiling kernel.
There must be something wrong with your machine if this happens.
arch/sparc/configs/sparc64_defconfig builds in about 5 or 6 minutes
at "-j32" on my Niagara-T1 based boxes.
My Niagara-T2 box at "-j64" can build that in just over a minute.
An allmodconfig takes ~22minutes, and almost half of that is the
single-threaded work of linking the final vmlinux image and running
modpost on thousands of modules.
^ permalink raw reply [flat|nested] 5+ messages in thread