CURRENTand releng_7 kernel makes the system run very very hot

[Ken Menzel]

It has been suggested to me to move this thread from current to acpi. 
>From what I can tell the CPU's do not halt on idle.  Top -SH from a 
system booted for a few hours on releng_7 or on current shows hours of 
time used where as releng_6 used only minutes or seconds.  This is 
causing some sytems to overheat.

I am trying to compile all the relevant information in this e-mail. 
If I have missed  anything please let me kow.  I can also provide ssh 
access to a developer who would like to see the problem.  I see the 
problem on both AMD64 kernel and i386 kernel single and multi 
processor.

Here is information I have gather so far:  Is there anything else 
needed for the PR?

Ken

http://www.kodem.com/ports/kenfreebsd-dell2950.asl

http://www.kodem.com/ports/dmesg-dell2950.txt
barclay# top -SH
last pid:   833;  load averages:  0.12,  0.03,  0.01    up 0+00:44:45 
11:12:22
73 processes:  9 running, 46 sleeping, 18 waiting
CPU states:  0.0% user,  0.0% nice,  0.6% system,  0.2% interrupt, 
99.2% idle
Mem: 9816K Active, 138M Inact, 181M Wired, 48K Cache, 214M Buf, 3611M 
Free
Swap: 12G Total, 12G Free

  PID USERNAME PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   14 root     171 ki31     0K    16K CPU4   4  44:14 100.00% idle: 
cpu4
   15 root     171 ki31     0K    16K CPU3   3  44:07 100.00% idle: 
cpu3
   18 root     171 ki31     0K    16K RUN    0  43:48 100.00% idle: 
cpu0
   13 root     171 ki31     0K    16K CPU5   5  43:47 100.00% idle: 
cpu5
   16 root     171 ki31     0K    16K CPU2   2  43:42 100.00% idle: 
cpu2
   17 root     171 ki31     0K    16K CPU1   1  43:38 100.00% idle: 
cpu1
   12 root     171 ki31     0K    16K CPU6   6  43:19 100.00% idle: 
cpu6
   11 root     171 ki31     0K    16K CPU7   7  43:15 100.00% idle: 
cpu7
   19 root     -32    -     0K    16K WAIT   0   0:16  0.20% swi4: 
clock sio
   49 root      20    -     0K    16K syncer 1   0:01  0.20% syncer
   48 root     -16    -     0K    16K psleep 7   0:58  0.00% bufdaemon
    3 root      -8    -     0K    16K -      3   0:45  0.00% g_up
    4 root      -8    -     0K    16K -      6   0:07  0.00% g_down
   30 root     -64    -     0K    16K WAIT   0   0:05  0.00% irq78: 
mfi0
   51 root      -8    -     0K    16K biord  0   0:00  0.00% 
softdepflush
   22 root     -16    -     0K    16K -      4   0:00  0.00% yarrow
barclay# w
11:12AM  up 44 mins, 1 user, load averages: 0.12, 0.03, 0.01
USER             TTY      FROM              LOGIN@  IDLE WHAT
sysadm           p0       netb-138.icarz.c 10:29AM     - w
barclay#
barclay# kgdb kernel.debug /dev/mem
[GDB will not be able to debug user-mode threads: 
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and 
you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for 
details.
This GDB was configured as "amd64-marcel-freebsd".
(kgdb) print cpu_idle_hook
$1 = (void (*)(void)) 0xffffffff801d0bb0 <acpi_cpu_idle>

barclay# sysctl hw.acpi
hw.acpi.supported_sleep_state: S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S4
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: S1
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 0
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.cpu.cx_lowest: C1
barclay#




-----------------------------------------------------
Ken Menzel
kmenzel at whisolutions.com
/earth is 98% full ... please delete anyone you can.