Re: [ACPI] Re: system slow since ~ 2.6.7

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Date:	Sat, 20 Nov 2004 21:35:46 +0100 (CET)
To: Andrew Morton <akpm@osdl.org>

On Wed, 17 Nov 2004, Andrew Morton wrote:

> (added linux-acpi)

Thanks for the reply and sorry for the delay - was away for 2 days.

But now I've got some new data, that may give some hints.

1) I played with BIOS setup, switched off, switched on the PC, booted into
different kernels, maybe, re-configured and re-installed kernels, and
then, at some point, the problem was gone.

2) Today I added a coupld of points to the 2.6.9 config (attached), and
the problem re-appeared.

3) I noticed, the problem (blinking power LED) starts at
/etc/init.d/lm_sensors.start. More precisely - after sensors -s is run. At
the same time the system performance drops (you might know that this is
related to sensors already - do you?)

> readprofile -r
> sleep 10
> readprofile -n -v -m /boot/System.map | sort -n +2 | tail -40

Not sure, if this is still needed, but here goes: before sensors:

c0118b80 task_prio 1 0.0625
c0119630 task_curr 1 0.0125
c01197c0 add_wait_queue 1 0.0104
c010aa80 do_gettimeofday 2 0.0114
c01182d0 nr_running 2 0.1250
c0119610 in_sched_functions 2 0.0625
c0105143 syscall_exit 4 0.3636
c0119d00 mmput 4 0.0250
c0105138 syscall_call 6 0.5455
c0119da0 get_task_mm 26 0.2321
c0103d20 get_wchan 60 0.4167
c010510c system_call 100 2.2727
00000000 total 209 0.0019

and after:

c0105138 syscall_call 1 0.0909
c0116710 pgd_ctor 1 0.0063
c0118b80 task_prio 1 0.0625
c0119ec0 copy_mm 1 0.0010
c010aa80 do_gettimeofday 2 0.0114
c0118b90 task_nice 2 0.1250
c0119610 in_sched_functions 2 0.0625
c0103db0 get_free_idx 3 0.0469
c0105143 syscall_exit 3 0.2727
c0119d00 mmput 3 0.0187
c0116ab0 do_page_fault 4 0.0026
c01197c0 add_wait_queue 5 0.0521
c0119630 task_curr 8 0.1000
c0119da0 get_task_mm 31 0.2768
c0103d20 get_wchan 36 0.2500
c010510c system_call 95 2.1591
00000000 total 198 0.0018

In my /etc/sysconfig/lm_sensors:

MODULE_0=i2c_dev
MODULE_1=i2c_isa
MODULE_2=via686a

Thanks
Guennadi

---
Guennadi Liakhovetski

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• Previous message: Adam Heath: "[OT] Re: page fault scalability patch V11 [0/7]: overview"
• In reply to: Andrew Morton: "Re: [ACPI] Re: system slow since ~ 2.6.7"
• Next in thread: Len Brown: "Re: system slow since ~ 2.6.7"
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