Re: 2.6.8 and 2.6.9 Dual Opteron glitches
From: Daniel Egger
Date: Tue Nov 02 2004 - 17:56:16 EST
On 02.11.2004, at 17:58, Thomas Zehetbauer wrote:
I am using a not-so-new Tyan Thunder K8W S2885 based Dual Opteron
System.
Mine is a Tyan Tiger K8W. :)
2) 64 bit kernel vgettimeofday panic: The kernel panics in
Cannot confirm this, both 2.6.8.1 and 2.6.9 boot OK.
Could be the compiler, I'm using a gcc HEAD snapshot from yesterday.
However since I do not have any problems with the panics replaced by
printk I have troubles to understand the meaning of them.
3) Interrupt distribution 32 bit vs. 64 bit. Below is a copy of the
Cannot confirm this, interrupts seem to be almost equally distributed
with 64-bit kernel and irqbalance running. Did you note that x86_64
does
not provide in-kernel IRQ balancing.
Fair enough. Thanks for the pointer.
4) ACPI powermanagement (32bit and 64bit): No matter which ACPI
options
AFAIK power management is almost unsupported on SMP systems.
Strange. The ACPI tables seem to be filled with valueable information
which I can enable pretty finegrained in the BIOS and I even seem to get
somewhat useful options with the first CPU.
Also /proc/cpuinfo mentions powermanagement:
...
TLB size : 1088 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp
Whatever ts and ttp may mean.
I'd really love to have this machine running and use its power on demand
instead of having to think about a more sophisticated airflow to keep
the temperature (of idle CPUs) and thus the noiselevel down.
Servus,
Daniel
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