2.55 GHz overclock for SHIELD
Please help test this - while there is definitely a measurable improvement in performance, it is kind of inconsistent with the sort of increases I'd expect this clock speed to bring. I have been testing this for a few days, and I'm not quite sure whether this is due to the hardware reporting the wrong clock speeds on the relevant PLLs, an overgressive power management/dvfs quirk, or a bottleneck somewhere. I did have to track down a kernel bug preventing higher clocks that turned out to be an issue with NVIDIA using a signed long where they should have used an unsigned long.
Flashing:
0. Make sure you are on the current OTA.
1. Unlock your bootloader.
2. Test the kernel: fastboot boot boot-roth-oc.img
3. See if it crashes while booting. If it does, don't proceed to the next step, and post a reply below. Before you flash, verify that you're running my kernel by checking for "mike@ekureru" either in the Kernel Version field in About SHIELD, doing a cat /proc/version (in case you didn't see it crashing), or verifying the maximum CPU speed is 2550 MHz.
4. If all goes well, flash the kernel: fastboot flash boot boot-roth-oc.img
Note: This boot.img is insecure (ro.secure=0) for easier debugging. Userspace apps shouldn't work yet, so this boots at 2550 MHz.
As always, boot/flash this at your own risk, though this kernel doesn't raise voltages much.
Download: http://setcpu.com/boot-roth-oc.img
Relevant patches: https://github.com/coolbho3k/kernel-roth
Picture:
Mike
Please help test this - while there is definitely a measurable improvement in performance, it is kind of inconsistent with the sort of increases I'd expect this clock speed to bring. I have been testing this for a few days, and I'm not quite sure whether this is due to the hardware reporting the wrong clock speeds on the relevant PLLs, an overgressive power management/dvfs quirk, or a bottleneck somewhere. I did have to track down a kernel bug preventing higher clocks that turned out to be an issue with NVIDIA using a signed long where they should have used an unsigned long.
Flashing:
0. Make sure you are on the current OTA.
1. Unlock your bootloader.
2. Test the kernel: fastboot boot boot-roth-oc.img
3. See if it crashes while booting. If it does, don't proceed to the next step, and post a reply below. Before you flash, verify that you're running my kernel by checking for "mike@ekureru" either in the Kernel Version field in About SHIELD, doing a cat /proc/version (in case you didn't see it crashing), or verifying the maximum CPU speed is 2550 MHz.
4. If all goes well, flash the kernel: fastboot flash boot boot-roth-oc.img
Note: This boot.img is insecure (ro.secure=0) for easier debugging. Userspace apps shouldn't work yet, so this boots at 2550 MHz.
As always, boot/flash this at your own risk, though this kernel doesn't raise voltages much.
Download: http://setcpu.com/boot-roth-oc.img
Relevant patches: https://github.com/coolbho3k/kernel-roth
Picture:
Mike
Last edited:
