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Overclock/Underclock the processor to speed up / save battery.

asked 2015-02-25 04:07:53 +0200

JevinzAc gravatar image

updated 2015-02-25 04:12:51 +0200

Please bring the ability to overclock the processor, cuz most of the time, my Jolla takes around 5 or more seconds to open an app. I only have a couple of apps installed too and running the latest OS 1.1.2.15. And also the ability to underclock the processor to save battery.

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isn't the speed of memory/flash the limiting factor? so overclocking the cpu seems quite useless to me in this scenario

till ( 2015-02-25 12:37:33 +0200 )edit

Yes, many apps take few seconds to start, glad i can swipe back to a launcher screen and launch another app in the meantime while waiting for first one to appear. ;)

Out of curiosity though, i'm interested to know how much the CPU in Jolla Phone can be overclocked.

veeall ( 2015-02-25 19:05:23 +0200 )edit

i increased the zram size to reduce need for swapping memory and set cpu/gpu governor to performance. Most of the time, my phone memory usage is 90-100%, so when starting new apps, OS must swap parts of memory to swap file at first before it can start the app. This takes some time and cause a longer app start time. For me, apps start much faster with larger zram setting.

Yuri ( 2015-03-01 13:49:11 +0200 )edit

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answered 2015-02-25 11:59:30 +0200

rainisto gravatar image

updated 2015-02-25 11:59:56 +0200

You can underclock the processor by lowering max frequency in:
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
1404000

And normal linux scaling governors ara available:
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
msm-dcvs interactive ondemand userspace powersave performance

For legal and warranty reasons we don't offer overclocking possibility. Underclocking is already automatic depending on what governor is in use.

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Warranty void! Use at your own risk: There is an app called "Better Performance". It can be installed from the openrepos. The performance gained is miniscule, but you might give it a try.

lispy ( 2015-02-25 12:18:22 +0200 )edit

I'm using the same tweak "Better Performance" app provides, it is only changing CPU governor to 'performance' so no any other boost is to be expected than a litlle more fluid animations when interacting with the user interface. I like it.

veeall ( 2015-02-25 19:01:13 +0200 )edit

Anyway is overclocking doable in the snapdragon 400 ? This link suggests, it's only placebo : http://www.reddit.com/r/Android/comments/26tqck/overclocking_possibly_dead_for_currentpast_gen/ Because the clock could have be locked by Qualcom ?

Nokia7710 ( 2015-02-26 06:51:13 +0200 )edit

@lispy: I don't see any reasons why this should void warranty as the application only changes the governor used. The default governor ondemand also speeds up cpu/gpu to maximum allowed frequency when required by the system load. Performance governor just sets cpu/gpu speed to maximum all the time. This does not overclock cpu/gpu. For me I prefere to set cpu/gpu governor to performance as the phone works much better with that. It avoids the time required to switch cpu frequency.

Yuri ( 2015-03-01 13:37:10 +0200 )edit
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Asked: 2015-02-25 04:07:53 +0200

Seen: 1,490 times

Last updated: Feb 25 '15