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- - [Announce] kernel-power stable v50 in Extras (https://talk.maemo.org/showthread.php?t=83118)

Re: [Announce] kernel-power stable v50 in Extras

hi
i have a problem with uninstalling KP50 with NOKIA KERNEL it says unable to install nokia kernel and im doing this because KP50 not booting ! after trying CSSU-THUMB i restored my backup and reinstalled KP50 but it is not booting :o... please help

./sifo

Re: [Announce] kernel-power stable v50 in Extras-Devel

Quote:

Originally Posted by freemangordon (Post 1181443)

Please anyone who has not enabled SR, to do a little experimenting with default and dsp profiles and to confirm/not if SR is stable and how is the battery life with SR. Also if you have your own undervolting profile, I will appreciate a comparison between your manually tuned voltages and SR calculated. SR should be rock stable in KP50, but I need a confirmation.

Note:
Have in mind that if you have your own undervolting profile, SR would not make battery life better, at least not much.

Sorry if this has been reported, but there's a regression in kp50 when compared to kp49. in 49 you could use max 950mhz with sr 1&2 and with kp50 you can use max 900 mhz with sr 1&2. It's why I had to update my modified qcpufreq script. If you exceed the vaules, the system crashes.

Re: [Announce] kernel-power stable v50 in Extras

Quote:

Originally Posted by sifo (Post 1221348)

never mind about that, problem solved :mad:

Re: [Announce] kernel-power stable v50 in Extras-Devel

Quote:

Originally Posted by marmistrz (Post 1221424)

SmartReflex driver has NEVER supported 950 MHz. period.

Re: [Announce] kernel-power stable v50 in Extras-Devel

Quote:

Originally Posted by freemangordon (Post 1221588)

SmartReflex driver has NEVER supported 950 MHz. period.

It's strange. I made the script with kp49 and 950Mhz didn't cause a crash. I tested it (overclocked value by value until crash). Maybe it wasn't supported, but somehow didn't cause a crash ?

Maybe the crash would appear after some long using... But I'm sure it was 950000 as I changed it lately in the updated version for kp50.

Re: [Announce] kernel-power stable v50 in Extras

Hello,

This is my first post in Maemo.org. I like a lot the N900 and I've installed lots of applications and Easy Debian etc, with no problem. But for some reason I can't install the kernel-power v50. I tried to install Linux kernel for power user (settings and overclock) with Hildon Application Manager and via apt-get package but no matter what method I try. The uname -r it says still 2.6.28-omap1. I have rebooted the N900 a few times every times and no luck, the same. The Nokia Kernel icon is in the menu.

I tried to uninstall the kernel power with X-Terminal, and reinstall the kernel power again, nothing.

I have PR1.3.1 I think, version 21.2011.38-1. My N900 is spanish, and I have multiboot installed with NitDroid.

Any help would be great, thanks!

Re: [Announce] kernel-power stable v50 in Extras

Read the wiki?
To uninstall best to follow these instructions
http://wiki.maemo.org/Kernel_Power#U...g_kernel-power

Read this for your problem
http://wiki.maemo.org/Kernel_Power#I...d_installation

Re: [Announce] kernel-power stable v50 in Extras

Hey, i have a question for you all.

While doing some tests with Thumb kernel, i had some trouble with Powertop as the CPU in idle was too much on C3 state if i compare it without Thumb. I did this check because i had a little loss in battery consumption.

(the following is the short explaination, i can provide a more complete test process and info):
So as i tinker a lot with my N900, i though it is because of something else, so i did a backup and flashed the N900 with PR1.3 emmc and rootfs.
Then installed CSSU, KP50, KP-Settingsv14, batterygraph, rootsh and leafpad (yes, i am unable to understand how vi works)

Then did Powertop and dmesg to see the evolution. Everything was fine until a few hour after the reinstall, i suddenly got a big consumption drain. Confirmed in batterygraph.

So i started powertop and found a lot more interrupt than usual. Also, core, neon and ina2 in powertop result are always 100% ON.
then started DMESG and found out a lot of "procwrap_detach: deprecated dspbridge ioctl.
I also found this kind of error:

Code:

bridge_deh_notify: ********** DEVICE EXCEPTION **********

[ 2768.851745] bridge_deh_notify: DSP_MMUFAULT,err_info = 0x0

[ 2768.851776] bridge_deh_notify: DSP_MMUFAULT, High Address = 0x7246

[ 2768.851806] bridge_deh_notify: DSP_MMUFAULT, Low Address = 0x1240

[ 2768.851806] bridge_deh_notify: DSP_MMUFAULT, fault address = 0x72461240

[ 2768.852050] print_dsp_trace_buffer:

[ 2768.852081] (SYS_EFREE): segid = 540916496, ptr = 0x0, size = 537949416

[ 2768.852142] bridge_deh_notify: ********** DEVICE EXCEPTION **********

[ 2768.852142] bridge_deh_notify: DSP_SYSERROR, err_info = 0x102

[ 2768.852233] print_dsp_trace_buffer:

[ 2768.852233] (SYS_EFREE): segid = 540916496, ptr = 0x0, size = 537949416

[ 2768.852264] bridge_deh_notify: ********** DEVICE EXCEPTION **********

[ 2768.852294] bridge_deh_notify: DSP_SYSERROR, err_info = 0x102

[ 2768.852355] print_dsp_trace_buffer:

[ 2768.852386] (SYS_EFREE): segid = 540916496, ptr = 0x0, size = 537949416

[ 2768.852386] bridge_deh_notify: ********** DEVICE EXCEPTION **********

[ 2768.852416] bridge_deh_notify: DSP_SYSERROR, err_info = 0x102

[ 2768.852478] print_dsp_trace_buffer:

[ 2768.852508] (SYS_EFREE): segid = 540916496, ptr = 0x0, size = 537949416

[ 2768.861450] wake_dsp: unexpected state a

[ 2768.861541] bridge_deh_notify: ********** DEVICE EXCEPTION **********

[ 2768.861541] bridge_deh_notify: DSP_SYSERROR, err_info = 0x102

[ 2768.861663] print_dsp_trace_buffer:

[ 2768.861694] (SYS_EFREE): segid = 540916496, ptr = 0x0, size = 537949416

I somehow found out that this is happen while recording/playing movie.
I uninstalled KP50 and KP50-Settings, problem gone!

I also tried with DSP overclock profile.

This is something i tested a lot with different configuration, CSSU or not, DCIM folder on Internal/uSD, swap on internal/uSD/both, KP50/OMAP. And i only got this problem while KP50 installed, no matter the rest of my configuration.

I found a solution, it is to install 720p packages once KP50 is installed. Now i don't have any error.

I am using KP50 since the very beginning and never experienced this error, right is that i had 720p installed since the very beginning too...

I did not find any info about KP50 requiring 720p package to run properly, i checked TMO page and wiki.

So can any of you confirm this?

Thank you

Re: [Announce] kernel-power stable v50 in Extras

Also, can someone point me to the "IO anti-contention-under-extreme-loads kernel tuning" thing that Hurrian is refering to in post 427 of last page?

ed_boner already asked this but got no answer. And i would be very interested about this.

Re: [Announce] kernel-power stable v50 in Extras

Code:

echo 10 > /proc/sys/vm/dirty_ratio

echo 5 > /proc/sys/vm/dirty_background_ratio

echo 4000 > /proc/sys/vm/dirty_expire_centisecs

echo 4000 > /proc/sys/vm/dirty_writeback_centisecs

echo 333 > /proc/sys/vm/vfs_cache_pressure



echo 66 > /proc/sys/vm/swappiness

echo 0 > /proc/sys/vm/page-cluster

echo 64 > /sys/block/mmcblk0/queue/nr_requests

echo 64 > /sys/block/mmcblk1/queue/nr_requests

echo 0 > /sys/block/mmcblk0/queue/iosched/slice_idle

echo 0 > /sys/block/mmcblk1/queue/iosched/slice_idle

echo 32 > /sys/block/mmcblk0/queue/iosched/quantum

echo 32 > /sys/block/mmcblk1/queue/iosched/quantum

echo 96 > /sys/block/mmcblk0/queue/iosched/fifo_expire_sync

echo 96 > /sys/block/mmcblk1/queue/iosched/fifo_expire_sync

echo 200 > /sys/block/mmcblk0/queue/iosched/fifo_expire_async

echo 200 > /sys/block/mmcblk1/queue/iosched/fifo_expire_async