On 02/22/2010 04:53 AM, Brendan Long wrote:

On 02/21/2010 04:55 PM, Xavier Chantry wrote:

...

On Mon, Feb 22, 2010 at 12:42 AM, Stefano Z. wrote:

...

hi

i've bought a new notebook (hp pavilion dm1-1150sl) and installed archlinux. i have see a strange thing with powertop, i'm running the vanilla arch kernel26, and i have see this behaviour: Cn Avg residency P-states (frequencies) C0 (cpu occupata) (31,6%) C0 0,0ms ( 0,0%) C1 mwait 0,1ms ( 0,7%) C4 mwait 0,0ms (67,8%) Wakeups-from-idle per second : 31483,5 interval: 10,0s --- as you can see, i have a LOT of wakeups per seconds very low c1 states lot of c0 and c4 states, a wattmeter tell me that archlinux consume about 25/26watt Then i have boot a live ubuntu distro and see this: Cn permanenza media P-state (frequenze) C0 (cpu occupata) ( 0,6%) polling 0,0 ms ( 0,0%) C1 mwait 26,7 ms (68,6%) C4 mwait 1,2 ms (30,8%) Wakeup-da-idle al secondo: 281,3 intervallo: 15,0s --- as you can see the wakeups are a LOT lower than on arch and we have lot of c1 and c4 state, power consumption is about 20W, the same that i have with win7 (about 18/20w). For meaning about cX state see here: http://www.lesswatts.org/projects/powertop/powertop.php

thanks!

You didn't give enough information so we will need to check the basis : - which cpufreq driver and governor are you using in both cases (check cpufreq-info) - what processes does powertop show as causes for wakeups ? - what processes does top show in term of cpu usage ?

Here is what I got in the last few minutes when i was writing this : C4 mwait 3.4ms (92.5%) 800 Mhz 98.0% Wakeups-from-idle per second : 279.4 interval: 10.0s

I have a core 2 duo with acpi-cpufreq loaded and conservative governor. $ grep cpufreq /etc/rc.conf MODULES=(acpi-cpufreq) DAEMONS=(syslog-ng net-profiles crond dbus hal alsa cpufreq storage-fixup) $ grep governor /etc/conf.d/cpufreq # valid governors: governor="conservative"

They may just not have cpu-freq-utils installed maybe? I'm using laptop-mode-tools with compiz and GNOME running (but not doing anything) and it's saying 99.2% C4, 0.8% C0. This is with another Core2 and laptop-mode is set to use the powersave governor on battery (which is how I tested). When I plug it in, it jumps up to 25%, but I don't really care how active the processor is when it's on battery.

Be sure to have cpu-freq-utils installed, as well as loading the right modules (acpi-cpufreq, cpufreq_ondemand, if you plan on using the same governor as ubuntu does), and add `cpufreq` to your DAEMONS array in rc.conf. On my system, with laptop-mode-tools the powertop output is very similar to what Brendan said. Also, the 31k+ wakeups definitely mean there's some issue on your config.

root ~ # acpitool -c CPU type : Genuine Intel(R) CPU U2300 @ 1.20GHz CPU speed : 1200.161 MHz Cache size : 1024 KB Bogomips : 2401.33 Bogomips : 2401.10 # of CPU's found : 2 Processor ID : 0 Bus mastering control : yes Power management : yes Throttling control : yes Limit interface : yes Active C-state : C0 C-states (incl. C0) : 2 Usage of state C1 : 4759885 (87.3 %) T-state count : 8 Active T-state : T0 Processor ID : 1 Bus mastering control : yes Power management : yes Throttling control : yes Limit interface : yes Active C-state : C0 C-states (incl. C0) : 2 Usage of state C1 : 4294840 (86.6 %) T-state count : 8 Active T-state : T0 On Mon, Feb 22, 2010 at 10:04 AM, Stefano Z. wrote:

no, my dual celeron su2300 dosen't support speedstep, it stay fixed to 1.2ghz but i have found the problem, i think this problem have to do with KMS... I have istalled kernel26 2.6.31.6-1 and the problem disappered but obviously this is not the solution i want ;-) If i install 2.6.32+ kernel the problem reappear. Another thing that happens is that the cpu(s) Temperature with kernels

...

2.6.31 stay about on 53+C while with kernel <2.6.32 stays on 42C...

On Mon, Feb 22, 2010 at 9:43 AM, Andrea Fagiani wrote:

...

On 02/22/2010 04:53 AM, Brendan Long wrote:

...

On 02/21/2010 04:55 PM, Xavier Chantry wrote:

...

On Mon, Feb 22, 2010 at 12:42 AM, Stefano Z.  wrote:

...

hi

i've bought a new notebook (hp pavilion dm1-1150sl) and installed archlinux. i have see a strange thing with powertop, i'm running the vanilla arch kernel26, and i have see this behaviour: Cn                Avg residency       P-states (frequencies) C0 (cpu occupata)      (31,6%) C0                0,0ms ( 0,0%) C1 mwait          0,1ms ( 0,7%) C4 mwait          0,0ms (67,8%) Wakeups-from-idle per second : 31483,5  interval: 10,0s --- as you can see, i have a LOT of wakeups per seconds very low c1 states lot of c0 and c4 states, a wattmeter tell me that archlinux consume about 25/26watt Then i have boot a live ubuntu distro and see this: Cn                permanenza media    P-state (frequenze) C0 (cpu occupata)      ( 0,6%) polling           0,0 ms ( 0,0%) C1 mwait         26,7 ms (68,6%) C4 mwait          1,2 ms (30,8%) Wakeup-da-idle al secondo: 281,3        intervallo: 15,0s --- as you can see  the wakeups are a LOT lower than on arch and we have lot of c1 and c4 state, power consumption is about 20W, the same that i have with win7 (about 18/20w). For meaning about cX state see here: http://www.lesswatts.org/projects/powertop/powertop.php

thanks!

You didn't give enough information so we will need to check the basis : - which cpufreq driver and governor are you using in both cases (check cpufreq-info) - what processes does powertop show as causes for wakeups ? - what processes does top show in term of cpu usage ?

Here is what I got in the last few minutes when i was writing this : C4 mwait          3.4ms (92.5%)          800 Mhz    98.0% Wakeups-from-idle per second : 279.4    interval: 10.0s

I have a core 2 duo with acpi-cpufreq loaded and conservative governor. $ grep cpufreq /etc/rc.conf MODULES=(acpi-cpufreq) DAEMONS=(syslog-ng net-profiles crond dbus hal alsa cpufreq storage-fixup) $ grep governor /etc/conf.d/cpufreq # valid governors: governor="conservative"

They may just not have cpu-freq-utils installed maybe? I'm using laptop-mode-tools with compiz and GNOME running (but not doing anything) and it's saying 99.2% C4, 0.8% C0. This is with another Core2 and laptop-mode is set to use the powersave governor on battery (which is how I tested). When I plug it in, it jumps up to 25%, but I don't really care how active the processor is when it's on battery.

Be sure to have cpu-freq-utils installed, as well as loading the right modules (acpi-cpufreq, cpufreq_ondemand, if you plan on using the same governor as ubuntu does), and add `cpufreq` to your DAEMONS array in rc.conf. On my system, with laptop-mode-tools the powertop output is very similar to what Brendan said. Also, the 31k+ wakeups definitely mean there's some issue on your config.

nothing, the problem still exist, also with i915.modeset=0. On Mon, Feb 22, 2010 at 11:30 AM, Andrea Fagiani wrote:

On 02/22/2010 09:04 AM, Stefano Z. wrote:

...

no, my dual celeron su2300 dosen't support speedstep, it stay fixed to 1.2ghz but i have found the problem, i think this problem have to do with KMS... I have istalled kernel26 2.6.31.6-1 and the problem disappered but obviously this is not the solution i want ;-) If i install 2.6.32+ kernel the problem reappear. Another thing that happens is that the cpu(s) Temperature with kernels

...

2.6.31 stay

about on 53+C while with kernel<2.6.32 stays on 42C...

On Mon, Feb 22, 2010 at 9:43 AM, Andrea Fagiani  wrote:

...

On 02/22/2010 04:53 AM, Brendan Long wrote:

...

On 02/21/2010 04:55 PM, Xavier Chantry wrote:

...

On Mon, Feb 22, 2010 at 12:42 AM, Stefano Z.  wrote:

...

hi

i've bought a new notebook (hp pavilion dm1-1150sl) and installed archlinux. i have see a strange thing with powertop, i'm running the vanilla arch kernel26, and i have see this behaviour: Cn                Avg residency       P-states (frequencies) C0 (cpu occupata)      (31,6%) C0                0,0ms ( 0,0%) C1 mwait          0,1ms ( 0,7%) C4 mwait          0,0ms (67,8%) Wakeups-from-idle per second : 31483,5  interval: 10,0s --- as you can see, i have a LOT of wakeups per seconds very low c1 states lot of c0 and c4 states, a wattmeter tell me that archlinux consume about 25/26watt Then i have boot a live ubuntu distro and see this: Cn                permanenza media    P-state (frequenze) C0 (cpu occupata)      ( 0,6%) polling           0,0 ms ( 0,0%) C1 mwait         26,7 ms (68,6%) C4 mwait          1,2 ms (30,8%) Wakeup-da-idle al secondo: 281,3        intervallo: 15,0s --- as you can see  the wakeups are a LOT lower than on arch and we have lot of c1 and c4 state, power consumption is about 20W, the same that i have with win7 (about 18/20w). For meaning about cX state see here: http://www.lesswatts.org/projects/powertop/powertop.php

thanks!

You didn't give enough information so we will need to check the basis : - which cpufreq driver and governor are you using in both cases (check cpufreq-info) - what processes does powertop show as causes for wakeups ? - what processes does top show in term of cpu usage ?

Here is what I got in the last few minutes when i was writing this : C4 mwait          3.4ms (92.5%)          800 Mhz    98.0% Wakeups-from-idle per second : 279.4    interval: 10.0s

I have a core 2 duo with acpi-cpufreq loaded and conservative governor. $ grep cpufreq /etc/rc.conf MODULES=(acpi-cpufreq) DAEMONS=(syslog-ng net-profiles crond dbus hal alsa cpufreq storage-fixup) $ grep governor /etc/conf.d/cpufreq # valid governors: governor="conservative"

They may just not have cpu-freq-utils installed maybe? I'm using laptop-mode-tools with compiz and GNOME running (but not doing anything) and it's saying 99.2% C4, 0.8% C0. This is with another Core2 and laptop-mode is set to use the powersave governor on battery (which is how I tested). When I plug it in, it jumps up to 25%, but I don't really care how active the processor is when it's on battery.

Be sure to have cpu-freq-utils installed, as well as loading the right modules (acpi-cpufreq, cpufreq_ondemand, if you plan on using the same governor as ubuntu does), and add `cpufreq` to your DAEMONS array in rc.conf. On my system, with laptop-mode-tools the powertop output is very similar to what Brendan said. Also, the 31k+ wakeups definitely mean there's some issue on your config.

If you think it's KMS causing problems, try adding `nomodeset` to your kernel boot line and see what happens.

2010/2/22 Stefano Z. :

seems this is my same problem:

http://bugs.archlinux.org/task/17771

On Mon, Feb 22, 2010 at 10:42 AM, Stefano Z. wrote:

...

nothing, the problem still exist, also with i915.modeset=0.

On Mon, Feb 22, 2010 at 11:30 AM, Andrea Fagiani wrote:

...

On 02/22/2010 09:04 AM, Stefano Z. wrote:

...

no, my dual celeron su2300 dosen't support speedstep, it stay fixed to 1.2ghz but i have found the problem, i think this problem have to do with KMS... I have istalled kernel26 2.6.31.6-1 and the problem disappered but obviously this is not the solution i want ;-) If i install 2.6.32+ kernel the problem reappear. Another thing that happens is that the cpu(s) Temperature with kernels

...

2.6.31 stay

about on 53+C while with kernel<2.6.32 stays on 42C...

On Mon, Feb 22, 2010 at 9:43 AM, Andrea Fagiani  wrote:

...

On 02/22/2010 04:53 AM, Brendan Long wrote:

...

On 02/21/2010 04:55 PM, Xavier Chantry wrote:

> > On Mon, Feb 22, 2010 at 12:42 AM, Stefano Z. >  wrote: > > > >> >> hi >> >> i've bought a new notebook (hp pavilion dm1-1150sl) and installed >> archlinux. >> i have see a strange thing with powertop, i'm running the vanilla arch >> kernel26, >> and i have see this behaviour: >> Cn                Avg residency       P-states (frequencies) >> C0 (cpu occupata)      (31,6%) >> C0                0,0ms ( 0,0%) >> C1 mwait          0,1ms ( 0,7%) >> C4 mwait          0,0ms (67,8%) >> Wakeups-from-idle per second : 31483,5  interval: 10,0s >> --- >> as you can see, i have a LOT of wakeups per seconds very low c1 states >> lot of c0 and c4 states, >> a wattmeter tell me that archlinux consume about 25/26watt >> Then i have boot a live ubuntu distro and see this: >> Cn                permanenza media    P-state (frequenze) >> C0 (cpu occupata)      ( 0,6%) >> polling           0,0 ms ( 0,0%) >> C1 mwait         26,7 ms (68,6%) >> C4 mwait          1,2 ms (30,8%) >> Wakeup-da-idle al secondo: 281,3        intervallo: 15,0s >> --- >> as you can see  the wakeups are a LOT lower than on arch and we have >> lot of c1 and c4 state, >> power consumption is about 20W, the same that i have with win7 (about >> 18/20w). >> For meaning about cX state see here: >> http://www.lesswatts.org/projects/powertop/powertop.php >> >> thanks! >> >> >> >> > > You didn't give enough information so we will need to check the basis : > - which cpufreq driver and governor are you using in both cases (check > cpufreq-info) > - what processes does powertop show as causes for wakeups ? > - what processes does top show in term of cpu usage ? > > Here is what I got in the last few minutes when i was writing this : > C4 mwait          3.4ms (92.5%)          800 Mhz    98.0% > Wakeups-from-idle per second : 279.4    interval: 10.0s > > I have a core 2 duo with acpi-cpufreq loaded and conservative governor. > $ grep cpufreq /etc/rc.conf > MODULES=(acpi-cpufreq) > DAEMONS=(syslog-ng net-profiles crond dbus hal alsa cpufreq > storage-fixup) > $ grep governor /etc/conf.d/cpufreq > # valid governors: > governor="conservative" > > >

They may just not have cpu-freq-utils installed maybe? I'm using laptop-mode-tools with compiz and GNOME running (but not doing anything) and it's saying 99.2% C4, 0.8% C0. This is with another Core2 and laptop-mode is set to use the powersave governor on battery (which is how I tested). When I plug it in, it jumps up to 25%, but I don't really care how active the processor is when it's on battery.

Be sure to have cpu-freq-utils installed, as well as loading the right modules (acpi-cpufreq, cpufreq_ondemand, if you plan on using the same governor as ubuntu does), and add `cpufreq` to your DAEMONS array in rc.conf. On my system, with laptop-mode-tools the powertop output is very similar to what Brendan said. Also, the 31k+ wakeups definitely mean there's some issue on your config.

If you think it's KMS causing problems, try adding `nomodeset` to your kernel boot line and see what happens.

http://bugzilla.kernel.org/show_bug.cgi?id=14742 and I quote: http://bugzilla.kernel.org/show_bug.cgi?id=14742#c4 "ok so there is something very interesting here: your system, for some reason, seems to exit the C2 state immediately when it gets entered. (C2 is only available because the bios announces its presence). This is a hardware/BIOS bug, and a bad one at that. In the old code, for some reason, C2 is not used in practice. With the new code, the governor will try to use C2, repeatedly. I think the real solution is not to change the governor, but to make a quirk for your system so that Linux will just not use C2 on your system... Can you attach the output of "dmidecode"; we'll need that to make a quirk." and, a little further down: http://bugzilla.kernel.org/show_bug.cgi?id=14742#c8 "[ A request for people who see a similar issue: Please file a seperate bug for each different machine. So unless you have a HP PAvilion zv5000, you need a different bug]" They assumed that this issue would not rise on many different systems but apparently more are showing. I would definately suggest you guys to take this upstream. -- msn: stefan_wilkens@hotmail.com e-mail: stefanwilkens@gmail.com blog: http://www.stefanwilkens.eu/ adres: Lipperkerkstraat 14 7511 DA Enschede