Lagggg !!! (argh)

Frelon · Posted: Thu Mar 02, 2006 9:35 am Post subject: Lagggg !!! (argh)

Hi,

I have noticed serious mouse lag under XFCE (I'am not involving XFCE..), when I load a new page in Mozilla etc...
I also have some issues when I listen some mp3. When I run something, the sound become crappy.
My comp is a Ibook500MHz G3.
Anyone noticed that too ?? maybe Powernowd ???

Thx.
_________________
http://stan.openmod.org

Cenrim · Posted: Thu Mar 02, 2006 11:15 am Post subject:

something like this happens to me only when a Out of Memory cancels the emerge of big packets because I forgot to activate swap before.. (iBook G4 1.2ghz, 768MB here... man, I feel fast!

)
maybe exessive swapping?
getting something from the hard disc is like ordering something from the other side of the world in comparison with accessing data in ram or cache

_________________
[/garbage]

Frelon · Posted: Thu Mar 02, 2006 1:41 pm Post subject:

I have 640Mo of Ram, so it can't be a lack of memory. And it happen's also when nothing else run.

I'll try with Fluxbox....
_________________
http://stan.openmod.org

mattmatteh · Guru Joined: 10 Mar 2004 Posts: 449 Location: near chicago

open a terminal and use top, watch the cpu and such, and what is the ram usage ?

matt

btlee · Posted: Fri Mar 03, 2006 6:42 am Post subject:

Frelon · Posted: Fri Mar 03, 2006 9:51 am Post subject:

This is not a CPU charge problem. Like Btlee, I think it is a problem of cpu frequency management with governor.

Actually, my cpu run at 400MHz

in /sys/devices/system/cpu/cpu0/cpufreq :

scaling_governor : userspace
scaling_max_freq : 499999
scaling_min_freq : 400000
scaling_set_speed : 400000
scaling_driver : powermac
scaling_cur_freq : 400000

And maybe when it switch between 400 and 500 ....
_________________
http://stan.openmod.org

btlee · Posted: Fri Mar 03, 2006 8:57 pm Post subject:

Frelon,
if you read some code on cpu clock governor, you will know that cpu needs some delay to shift to other frequency.
The delay is a little bit long in G3, which also makes it impossible to choose ondemand or conservative governor.
Actually, I had tried to reduce the delay with modifying kernel code, but it only crashed ibook. :cry:

And from some times ago, the lag started to happen during loading some pages in firefox.
But I don't know why it happens, and how to fix it.
_________________
AMD64 3200+, 2G/160G+250G
DELL 700m, 1.8GHz, 2G/80G
iBook G3-500Mhz, 640M/100G

Frelon · Posted: Mon Mar 06, 2006 10:42 am Post subject:

I'm gonna try to replace powernowd by another power manager.
If it not works, I think the best way is to set the cpu at a permanent freq (so...no management !!)
_________________
http://stan.openmod.org

Frelon · Posted: Tue Mar 07, 2006 10:04 pm Post subject:

I have stopped powernowd and lag problems disappears.

(I can't set this post as [SOLVED]...)
_________________
http://stan.openmod.org