Hi!
I posted the following question, when 2.6.19 was freshly out. However, nobody
has answered. OK, I told myself, let's get things to stabilize, and I waited
patiently for 2.6.20. Now, the things are absolutely the same, and IMHO wrong.
Could anybody look at this and decide, whether it is a real bug, which has to
be fixed, or not ?
With regards, Pavel Troller
----- Forwarded message from Pavel Troller <patrol@xxxxxxxx> -----
From: Pavel Troller <patrol@xxxxxxxx>
To: linux-acpi@xxxxxxxxxxxxxxx
Subject: Strange things on 2.6.19 for a dual-core CPU
Mail-Followup-To: Pavel Troller <patrol@xxxxxxxx>,
linux-acpi@xxxxxxxxxxxxxxx
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Hi!
I've updated to vanilla 2.6.19 on my Pentium-D (dual-core x86_64) box.
Now I can't see even C1 in the /proc/acpi/processor/*/power output:
patrol@arcus:~$ cat /proc/acpi/processor/CPU1/power
active state: C0
max_cstate: C8
bus master activity: 00000000
maximum allowed latency: 2000 usec
states:
patrol@arcus:~$ cat /proc/acpi/processor/CPU2/power
active state: C0
max_cstate: C8
bus master activity: 00000000
maximum allowed latency: 2000 usec
states:
Another interesting thing is shown here:
patrol@arcus:~$ cat /proc/acpi/processor/CPU1/info
processor id: 0
acpi id: 1
bus mastering control: no
power management: no
throttling control: yes
limit interface: yes
patrol@arcus:~$ cat /proc/acpi/processor/CPU2/info
processor id: 1
acpi id: 2
bus mastering control: no
power management: no
throttling control: no
limit interface: no
As I remember, both cores were showing the same things formerly.
The only line referring to CPUs during boot is
ACPI: Processor [CPU1] (supports 8 throttling states)
and CPU2 is not mentioned at all.
The last (but maybe not acpi-related) strange thing is that in /proc/cpuinfo,
CPU1 reports 6403.56 bogomips (as always, approximately twice the clock) and CPU2
8314.32 ones (too much). It's also very suspicious. Formerly the difference was
very small.
Should I provide more info to debug these things, or is it OK ?
With regards, Pavel Troller
----- End forwarded message -----
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