[CLOSED, 2023-11-25] PK's Tuning Script

[pkgnex]

All,

As of this week, I have moved to the Pixel 8 Pro, and I traded my Pixel 4 XL in to get $200 from Google.

I will therefore no longer be doing any development on this mod, or even checking the thread to answer questions.

If you want to keep this mod around for your future use, please download a copy to your personal cloud storage utility in case the thread gets deleted by the XDA moderators.

I have thoroughly enjoyed creating / maintaining this script for the past 4 years, and interacting with the user community on improving it. You have been the best part of the experience!

Thank you, and best regards, Paul.

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A11 & A12 - use v16
A13 - use v17

Hey Coral / Flame Gang!

First off, I'm glad to be here. I just came from Pixel 2 XL after my phone died from hardware issues and I needed to upgrade!

Anyway, here's a script that I put together for my own use, but still develop occasionally; tuned especially for our Coral / Flame devices.

Enjoy!

The Back-Story:
I helped some good guys out with developing the awesome Franco.Kernel tuning parameters "back in the day" (Franco's Dev Team - you can look us up, the great osm0sis still hosts the original file set - but they won't even run on Android Pie or later). What is still applicable to Android 12 is in this file; trimmed and consolidated into a single script, along with some other goodies I've come across since.

Philosophy:
- I don't write untested BS or questionable crap in my scripts. If a given tweak doesn't show an objective improvement in benchmarks or battery life or a subjective improvement in performance that can be turned on or off by running or not running the script in a blind test - it doesn't get added.
- If I do not believe a given tweak is safe to run on everyone's daily driver device, I also won't include it my script, regardless of the benefit.
- This script is biased toward increasing performance - but it takes advantage of battery saving opportunities that don't affect performance.

Notes:
- This script is lean and mean, but it's not rocket science.
- I didn't invent anything here. Feel free to use it (or not), distribute, alter, whatever; to your satisfaction, giving credit for redistribution only to "Franco's Dev Team", and maybe me if you're feeling generous.
- I have verified it works well on my personal Pixel 4 XL, and is compatible with all Android versions, Kernels, and Magisk versions applicable to the device.
- It won't make your phone run any worse, and it should make it feel a bit "snappier", but YMMV.
- Most benchmark scores improve marginally (1% - 4%) on my device with stock or EX kernel. Again, YMMV.
- I do not plan to do heavy maintenance on this, but I will keep it up to date so it at least safely runs on the Pixel 4 / 4 XL as long as I own one. I will post updates with a minimal change log (it's a script, you can read it!). If I stumble across something that helps the community, I'll share it!

Disclaimer:
I can't see how this could possibly cause irreparable harm to any Android device on which it is run.
However, I suppose untested configurations may (rarely) have slow-downs, reboots, or other effects.
REGARDLESS, it is offered as-is with no warranty, and you choose to run this at your own risk.
If you do encounter issues, let me know and stop using the script. I may ask you for further help with debugging.

Requirements:
Root
BusyBox installation (I recommend the Magisk module by osm0sis)
Knowledge of how to execute a linux script and/or where to place it and allow permissions to run on boot

Usage:
Download the linked file to your device
Copy it to /data/adb/service.d
Ensure permissions are correct (0755)
Reboot and wait a three minutes

NOTE: The script will generate a text file called "pksp4_script_result" in the base of your "external storage" directory (/storage/emulated/0). This file will state either "Success!" or "Failure..." indicating if the script completed at the last execution attempt (it will over-write each time the script is run - check the date/time stamp on the file properties) .

Credits:
Franco's Dev Team, esp. osm0sis
Others as noted in the script file header

94pksp4v16.sh

Shared with Dropbox

www.dropbox.com

94pksp4v17.sh

Shared with Dropbox

www.dropbox.com

 

[pkgnex]

Change Log

V17 (use for A13)
- Audited script against A13 to ensure compatibility
- Script timing edits to support successful execution on A13 with Magisk 24 (especially ZRAM)

V16 (use for A11 and A12):
Fixed V15!
- Delayed and slowed ZRAM change to enhance the reliability of it "taking" on each boot
- Made Adrenoboost and power-efficient work queues contingent on those modules actually existing in the user's kernel
- (Did the same with the wakelock blocker while I was at it)
- Fixed a script typo that was the likely root-cause of V15 not running to completion or outputting "failure" for some users.

V15:
Enabled power-efficient work queues by default (most kernels have this functionality built in)
Enabled GPU Adrenoboost module by default, set to low boost (many kernels have this available, on/low seems preferred for a slight / smooth gaming boost without battery life detriment)
Changed vm.vfs_cache_pressure to 50 (was 200, wrong-direction from 100, I now believe after more testing)
Changed vm.dirty_ratio to 10 (from 20; avoids latency when having to write-out data to disk asynchronously by halving the amount of data needing to be written; this could reduce occasional "hang-up's" you may have experienced on this device regardless of kernel or mod - including stock!)

V14:
Increased ZRAM capacity by 50% to 3 GB
Turned off TCP timestamps to reduce overhead
Adjusted VM settings for having more memory
Added a couple minor VM tweaks
Added a minor kernel scheduler tweak
Minor code clean-up and re-ordering

V12:
Small core schedutil up/down rate limit tweaks, making small cores more responsive to increasing frequency and maintaining higher frequencies a bit longer. This should keep more load on small cores / reduce offloading to big cores unless big core utilization is truly necessary. I noted a little less latency and a little better battery life in my testing.

V11:
REMOVED.

V10:
Welcome to 2021.
Minor update - now bbr2>bbr>westwood (depends on what your kernel offers) for TCP congestion control algorithm. As an aside, I reconfirmed txquelen of 512 is still optimal for modern wifi and lte networks.

V9:
Happy holidays!
Added some TCP and kernel cfs tweaks that reduce device latency.

V8:
Stable, slightly improved Android 11 release.
Minor CFQ tunable tweaks that very slightly improved IO in benchmark testing.
Now blocks a single wakelock: qcom_rx_wakelock (if your personal philosophy is to never block any wakelocks, feel free to comment that line out in the script).
Changed TCP congestion avoidance algorithm to BBR2 (if available in kernel) - else, Westwood; based on network speed testing (BBR2 > Westwood > BBR).

V7:
Removed mount tweaks - they no longer do anything useful
Increased DBR slightly
Modified write-out file to not list time/date (for some reason it was being written twice on R). Just look at the file properties in your file manager to see when it was last written, if needed.
V6 is deprecated: Use V7 for R, V5 for Q

V6:
- Updated for Android 11 B1, verified to run without outputting any errors and is 100% stable.
- Removed one schedutil tweak that is no longer available on A11.
- Reverted kernel entropy settings to stock; tweaked settings were no longer increasing entropy pool.
- Users on A10 may use v6 without any issues, but v5 will still provide very slightly better performance on A10.

V5:
- A minor kernel overhead reduction from scheduler statistics
- Force CFQ as scheduler (just in case non-stock kernel isn't already set that way)
- Two CFQ tweaks, one that eliminated backward seeking penalty (makes no sense on non-rotational storage) and one that my testing showed sped up throughput and in theory should also reduce latency (so a true win-win!).

V4:
- Reverted foreground app schedtune boost, swappiness, vfs_cache_pressure, and dirty_ratio to stock
- Reverted IO scheduler to CFQ
- Removed wakelock blocking - verified no / minimal effect on deep sleep (I got 0.12%/hr idle drain overnight)
(for all of the above, thanks to @Freak07 for the advice / education!)
- Re-verified tx_queue_len (512) and tcp_congestion_control (westwood+) are optimized for WiFi and LTE networks

V3:
- Remove fstrim commands for /data and /cache since device is F2FS and fstrim doesn't apply (thanks to @woundman for pointing this out to me)
- Changed to Deadline scheduler with Franco Dev Team tunables - I just verified still benchmarks better after all these years
- If your kernel does not have Deadline available (e.g. stock kernel), the script will still keep you on Noop, as before.

V2:
- Reduce schedutil downrate limit to increase battery life.
- Block some safe wakelocks to increase battery life.
- Oh yeah, and a magic trick to turn off vm dirty write back timer (it still happens, just memory based and not every 5 seconds), to also increase battery life.

V1:
- Initial Pixel-4/XL release.

 

[pwnsicle]

ooh interesting! would this play nice with the blackened mod found in this forum?

 

[xFirefly93]

ooh interesting! would this play nice with the blackened mod found in this forum?

I wouldn't recommend you to mix stuff together because it can introduce values that conflicts with each other to some possible very random extent. Though it's your device - try it out and report back with accurate feedback on how it does perform.

:highfive:

 

[MarcoG:]

I use this Script with fsociety Kernel 1.27 and it works fine.

Thx for it

Gesendet von meinem Pixel 4 XL mit Tapatalk

 

[Curiousn00b]

Welcome to the Pixel 4 XL community. Also coming from the Pixel 2 XL as well, looking forward to testing this out. ?

 

[2WildFirE]

I'm on flame using this script and seems to work fine here.
It feels a bit snappier.
Thanks for your work.

 

[CyberpodS2]

Welcome brother... Nice to see another Taimen dev jump into the pool here!

 

[bl4dy_pt]

I'm on p4 with kiri, so good so far, let's see how will this improve battery life, thanks

 

[FlatOutRU]

Running great on fsociety!)

 

[chopt51]

Stock ROM only? Or will it work in pixeldust too.

 

[pkgnex]

ooh interesting! would this play nice with the blackened mod found in this forum?

It should. My script runs after BlakenedMod, so you'll get most of xFirefly93's battery savings, with a little bit of the PK snappiness.

I wouldn't recommend you to mix stuff together because it can introduce values that conflicts with each other to some possible very random extent. Though it's your device - try it out and report back with accurate feedback on how it does perform.

:highfive:

See above. Should be fine to run both... might even be best for some users! Let us know if it doesn't work!

I use this Script with fsociety Kernel 1.27 and it works fine.

Thx for it

Gesendet von meinem Pixel 4 XL mit Tapatalk

Glad to hear it!

Welcome to the Pixel 4 XL community. Also coming from the Pixel 2 XL as well, looking forward to testing this out.

Thanks. Hope you like it!

I'm on flame using this script and seems to work fine here.
It feels a bit snappier.
Thanks for your work.

Glad to hear it - it should...

Welcome brother... Nice to see another Taimen dev jump into the pool here!

Thanks! Great to see you again, too. Athouth, technically, I'm not a Dev

I'm on p4 with kiri, so good so far, let's see how will this improve battery life, thanks

Probably won't help much, but I'm working on some improvements for V2 (probably tomorrow or the day after!)

Running great on fsociety!)

Thanks for letting me know!

Stock ROM only? Or will it work in pixeldust too.

Any ROM!

 

[pkgnex]

New Version - V2

A little Sunday night treat!

V2 available in OP, change log in 2nd post.

Better battery life as I tune this in for Pixel 4/XL...

 

[tlxxxsracer]

Any testing with kirisakura's kernel? You said not to mix things

 

[woundman]

I see your script runs Fstrim. I thought Fstrim doesn't work on F2FS system partitions. Figured I'd mention it.

 

[pkgnex]

Any testing with kirisakura's kernel? You said not to mix things

It should work on any kernel... I've used on on stock and EX on Pixel 4, but I used it on kirisakura on my previous Pixel 2 XL device. If there are any issues, let me know.

I see your script runs Fstrim. I thought Fstrim doesn't work on F2FS system partitions. Figured I'd mention it.

Thanks for the heads-up. Running the fstrim command doesn't return any errors, so the script is "safe" to use, but if it's not actually doing anything on the device, I'll remove it in a future release.

 

[xFirefly93]

I see your script runs Fstrim. I thought Fstrim doesn't work on F2FS system partitions. Figured I'd mention it.

AFAIK - only the /data partition is using the "newer" f2fs filesystem on the three latest Pixel line-ups..

 

[pkgnex]

AFAIK - only the /data partition is using the "newer" f2fs filesystem on the three latest Pixel line-ups..

Looks like you're right.

That said, I stopped trimming /System to be safe once Android went SAR, and /Cache is sym-linked to another partition anyway. So, I don't think the commands are actually doing anything anymore - at least not anything useful since /cache isn't really used for much on newer Android versions.

I'll be removing the fstrim commands starting with the next version. In the meantime, it's not really hurting anything.

 

[sharpz811]

Thanks for the mod. How can one confirm if this is actually running?

 

[Badger50]

Thanks for the mod. How can one confirm if this is actually running?

Look for the log as in the pic. Then view it with your text viewer. It should say script successful :good: