I intended to delete thermal engine to unlock the maximum performance of S810, but I didn't after a half day for thinking. Then I took a look at thermal-engine and do some optimize for it.
When I looked at the thermal-engine, I saw it use emmc_therm (temperature of emmc) sensor to do throttle, and the throttle start too soon, from 43°C, detail is two cores 6 and 7 will be hotplug (plug out, turn off), and big cluster will be limited to 1.2GHz at just 47.7°C (the battery temperature is just ~40-41°C). You can see more detail in below:
EXPLAIN (from my knowledge, maybe it's not right at all)
cluster0: LITTLE (A53 cores) cluster, value: megahertz
cluster1: big (A57 cores) cluster, value: megahertz
hotplug_4-7: number of each cores in big cluster, 0 for disable (throttled) and 1 for enable.
gpu: GPU frequency, value: hertz (?)
s_backlight: the maximum brightness of screen, range: 255-0
the rest: IDK
I did a quick research and found that emmc can work from -25°C to +85C, so the limitation that Sony has set is too low (for me), just do a Geekbench and then the performance will come down clearly. Then I edit thermal-engine to increase the maximum performance of S810 but still keep my phone (IDK about yours just because we're not the same) in peace.
So why do I post here? Firstly, for those who wanna take the risk like me to unlock/get the true performance of our devices; secondly, maybe my knowledge is not right so I want you who have certain knowledge about this (EMMC, battery limitation; thermal, blah blah blah) correct me and help me and other users improve it.
I've done attached two files, one is original and the other is mine, hope you guys (who are sensei) will take a look on it to contribute for the community. For those who wanna use them, backup thermal-engine.conf first in /system/etc then copy the modify to the direction, correct name and permission and reboot.
UPDATING... (depend on you)
When I looked at the thermal-engine, I saw it use emmc_therm (temperature of emmc) sensor to do throttle, and the throttle start too soon, from 43°C, detail is two cores 6 and 7 will be hotplug (plug out, turn off), and big cluster will be limited to 1.2GHz at just 47.7°C (the battery temperature is just ~40-41°C). You can see more detail in below:
EXPLAIN (from my knowledge, maybe it's not right at all)
cluster0: LITTLE (A53 cores) cluster, value: megahertz
cluster1: big (A57 cores) cluster, value: megahertz
hotplug_4-7: number of each cores in big cluster, 0 for disable (throttled) and 1 for enable.
gpu: GPU frequency, value: hertz (?)
s_backlight: the maximum brightness of screen, range: 255-0
the rest: IDK
I did a quick research and found that emmc can work from -25°C to +85C, so the limitation that Sony has set is too low (for me), just do a Geekbench and then the performance will come down clearly. Then I edit thermal-engine to increase the maximum performance of S810 but still keep my phone (IDK about yours just because we're not the same) in peace.
So why do I post here? Firstly, for those who wanna take the risk like me to unlock/get the true performance of our devices; secondly, maybe my knowledge is not right so I want you who have certain knowledge about this (EMMC, battery limitation; thermal, blah blah blah) correct me and help me and other users improve it.
I've done attached two files, one is original and the other is mine, hope you guys (who are sensei) will take a look on it to contribute for the community. For those who wanna use them, backup thermal-engine.conf first in /system/etc then copy the modify to the direction, correct name and permission and reboot.
UPDATING... (depend on you)
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