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fhofer is offline fhofer
2010-04-06 , 16:48
Posts: 66 | Thanked: 30 times | Joined on Feb 2010
#31
@craftyguy: that is right, I have read the white paper. I am wondering why there are two settings that control SmartReflex in Maemo? Some people were reporting that the order of commands matter.. so perhaps it would be worth trying turning just one of them on?
 
egoshin is offline egoshin
2010-04-06 , 16:56
Posts: 992 | Thanked: 995 times | Joined on Dec 2009 @ California
#32
Originally Posted by Venemo View Post
Perhaps editing the pmconfig is more stable than the echo commands.
May be not - if you have some problem then you may fall in constant reboot loop after pmconfig editing. So - test it manually first.
 

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craftyguy is offline craftyguy
2010-04-06 , 16:56
Posts: 455 | Thanked: 278 times | Joined on Dec 2009 @ Oregon, USA
#33
Originally Posted by fhofer View Post
@craftyguy: that is right, I have read the white paper. I am wondering why there are two settings that control SmartReflex in Maemo? Some people were reporting that the order of commands matter.. so perhaps it would be worth trying turning just one of them on?
VDD typically stands for 'voltage drain drain' (positive voltage supply) in semiconductors, my guess is this device(omap) has 2
Last edited by craftyguy; 2010-04-06 at 16:58.
 

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egoshin is offline egoshin
2010-04-06 , 16:59
Posts: 992 | Thanked: 995 times | Joined on Dec 2009 @ California
#34
Originally Posted by fhofer View Post
@craftyguy: that is right, I have read the white paper. I am wondering why there are two settings that control SmartReflex in Maemo? Some people were reporting that the order of commands matter.. so perhaps it would be worth trying turning just one of them on?
I reported - I just noticed a difference. I had no effect with regular order.

However, I didn't do a scientific measurement, and that may be a placebo. I am now in reverse order of setup.

(unfortunately, I recognized that OMAP 3430 power management in software is ... weel, not the best, so I am forced to live with unfinished assumptions...)
 

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fhofer is offline fhofer
2010-04-06 , 17:38
Posts: 66 | Thanked: 30 times | Joined on Feb 2010
#35
I have turned just /sys/power/sr_vdd1_autocomp to 1. I will see if I notice any difference. (Both of the settings on make my device act a little weird -- there are request timeouts on wifi that disappear with SmartReflex off).
 
Monniman is offline Monniman
2010-04-24 , 16:55
Posts: 33 | Thanked: 13 times | Joined on Dec 2009 @ Helsinki, FINLAND
#36
I flashed my n900 with Lehto's 125-825MHz kernel and set the smart reflex on in pmconfig. The results are quite amazing. I also
set the ignore nice load to 1

echo "1" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load

renice 1 `cat /syspart/applications/standby/background/tasks`
renice 1 `ps | grep modest | cut -c1-5`


Now my batterylife has increased threefold. Used to get max 16 hours if on idle most of the time now the battery holds for 24h with average usage and over 34h on idle with 1 hour of talking and 1hour opf surfing and some texting.
 
fhofer is offline fhofer
2010-04-26 , 06:46
Posts: 66 | Thanked: 30 times | Joined on Feb 2010
#37
echo "1" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/ignore_nice_load

renice 1 `cat /syspart/applications/standby/background/tasks`
renice 1 `ps | grep modest | cut -c1-5`
I have tried the above with the stock kernel, but it rendered modest unusable and audio shuttered when multitasking. I had to kill modest and rebooted to get back to normal...
 
egoshin is offline egoshin
2010-04-26 , 19:55
Posts: 992 | Thanked: 995 times | Joined on Dec 2009 @ California
#38
Originally Posted by fhofer View Post
I have tried the above with the stock kernel, but it rendered modest unusable and audio shuttered when multitasking. I had to kill modest and rebooted to get back to normal...
You had something else. The niced applications never include audio stuff. And modest actually restarts itself then it goes to GUI mode and it loses "nice -1" value.

Note: I use only stock kernel.
 

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xomm is offline xomm
2010-04-27 , 00:09
Posts: 609 | Thanked: 243 times | Joined on Jan 2010 @ Eastern USA
#39
Just a note - I don't personally have battery problems, so I won't comment on that.

You should do statistically sound tests before claiming improvements in battery life, because you could be doing something akin to a "self-placebo." (For those who don't know what that is, it's a medical term, you think you're getting better results because you were told it would, when in fact, nothing has changed.)
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noipv4 is offline noipv4
2010-05-30 , 20:03
Posts: 193 | Thanked: 92 times | Joined on May 2010 @ galveston, tx
#40
Ok VDD1 compensates for CPU voltage.
VDD2 compensates for I/O pins voltages.

In my case smartreflex works on VDD1, while it fails with VDD2.
 

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