[Q] Using CFS kernel, more running apps = slower? - Android Q&A, Help & Troubleshooting

Hi ~ everyone!
I am studying about android kernels. And there is two cpu schedule: cfs & bfs
I googled both and found that cfs is keeping the CPU utilization of each app about the same.
Using cfs kernel, when android runs more apps, each app can occupy less cpu resource.
Is that means performance will be slower?
Thanks!

See here: http://www.cs.unm.edu/~eschulte/data/bfs-v-cfs_groves-knockel-schulte.pdf.

This is quite interesting. I never know about slowing down or anything. I'd give it a try on bfs...
I'd prefer Cfs due to it has better signal and the signal won't drop easily.
Sent from my Nexus S using xda premium

Related

Best kernal for project v

Hi guys wondering who has tested multiple kernals on project v. I have used the stock and overstock and prefer overstock. Any input on bali, dragon, or any others?
Sent from my SGH-T959 using XDA App
depends what you want, battery or speed
Balance[of both, but more battery QUOTE=kyle51;14780722]depends what you want, battery or speed[/QUOTE]
Sent from my SGH-T959 using XDA App
Mostly battery life
Sent from my SGH-T959 using XDA App
brianhaskell said:
Balance[of both, but more battery QUOTE=kyle51;14780722]depends what you want, battery or speed
Click to expand...
Click to collapse
Sent from my SGH-T959 using XDA App[/QUOTE]
could try overstock 2.4.1 then OC to 1.2GHz, havent been on project v but my battery was ok with that on other roms
or could try dragonmodz and OC to 1.2GHz, that might have better battery than overstock, havent tried it but people on his thread say they have quite decent battery going up to 1.5GHz
just play around with them for a few days each, see which works best
I'm running TigersBlood3.22 OC to 1.2Ghz and I'm gettin average battle life.
Sent from my SGH-T959 using XDA Premium App
Thanks for the advice. How's tigers blood not overclocked?
kawika said:
I'm running TigersBlood3.22 OC to 1.2Ghz and I'm gettin average battle life.
Sent from my SGH-T959 using XDA Premium App
Click to expand...
Click to collapse
Sent from my SGH-T959 using XDA App
DragonMODz kernels have the best battery I've experienced. Followed by Bali 1.8.6UV.
Sent from my SGH-T959
IMHO, DragonModz are awesome kernels, they have all flavors. They have the "Standard" version that its the intermediate between performance and battery life, then they have the ULP version that boosts the battery life, but takes a little of the performance, and last but not least, they have the OC version wich is oriented to performance...battery life is ok with this one, does not suck, but it isn't as great as the ULP/Standard version or Bali's UV.
I have tried several kernels, and i think that my phone was the happiest with DragonMODz.
i have found, for my phone at least
bali UV = great battery life ( 15 hours ) moderate use
bulet 1.48 = great performace ( 21 mflops & 7 hours ) moderate use
overstock 2.4.x = good balance
djluis48 said:
IMHO, DragonModz are awesome kernels, they have all flavors. They have the "Standard" version that its the intermediate between performance and battery life, then they have the ULP version that boosts the battery life, but takes a little of the performance, and last but not least, they have the OC version wich is oriented to performance...battery life is ok with this one, does not suck, but it isn't as great as the ULP/Standard version or Bali's UV.
I have tried several kernels, and i think that my phone was the happiest with DragonMODz.
Click to expand...
Click to collapse
I have to add that im an moderate/intense user. Im on WiFi 37% of the time, i use lots of intesive GPU using apps like Gameloft's HD games, N64/Gba emulation, i listen to music around 46% of the time and im using Project V until GB gets fully functional (GPS) wich seems to be very soon.
IMO, the best option if you want great battery life and great performance is to buy a 3000mah battery and use an OCed Kernel.
Thanks bro great info. I appreciate all the help with this thread!
djluis48 said:
IMHO, DragonModz are awesome kernels, they have all flavors. They have the "Standard" version that its the intermediate between performance and battery life, then they have the ULP version that boosts the battery life, but takes a little of the performance, and last but not least, they have the OC version wich is oriented to performance...battery life is ok with this one, does not suck, but it isn't as great as the ULP/Standard version or Bali's UV.
I have tried several kernels, and i think that my phone was the happiest with DragonMODz.
Click to expand...
Click to collapse
Sent from my SGH-T959 using XDA App
I ended up flashing bali uv with no overclock and it seems to be killer...thanks everyone
adamcooks said:
i have found, for my phone at least
bali UV = great battery life ( 15 hours ) moderate use
bulet 1.48 = great performace ( 21 mflops & 7 hours ) moderate use
overstock 2.4.x = good balance
Click to expand...
Click to collapse
Bali UV has the best battery life I've seen , after 16-17 hours of moderate use (WiFi, calls, 3d games) i still have on average 40-45% juice.

How many marks you get in Quadrant Standard?

I got 2461 with stock rom @ 1Ghz
I got 2376 with stock rom @ 1gh via quadrant advanced...
pretty much same , 24xx ... bye the way, what is your choice on governer? interactive or ondemand?
I've gotten about 26xx to 27xx
Sent from my GT-P7510 using xda premium
Mine is 12".
I got 2916 with stock @1.4Ghz
After 1.4Ghz 3800+
Sent from my GT-i5800 using XDA Premium
_delice_doluca_ said:
pretty much same , 24xx ... bye the way, what is your choice on governer? interactive or ondemand?
Click to expand...
Click to collapse
Performance...
Sent from my GT-i5800 using XDA Premium
2950 [email protected]
longlong240 said:
After 1.4Ghz 3800+
Sent from my GT-i5800 using XDA Premium
Click to expand...
Click to collapse
3800+? How did you get that high?
I'm running SGT 10.1 rooted/In Parisv4/Pershoot's kernel and OC @1.4 or so I thought. I read this and opened Quadrant Standard. Ran it and got 1829. I noted this was about the same as those running at 1Ghz and knew something wasn't right. I went into SetCPu and checked "set at boot" rebooted the tab, and my scores are now much betta:
2941
3069
3069
3063
not bad, but based on the advice in the SETCPu setup guide and my experience as an original/gangster of PC overclocking (Celery Sandwich will likely tell my age) this not be any issue at all, for the SGT10.1, but if you start seeing weird ()&(^$# THEN BACK IT DOWN, RINSE, REPEAT AT A LOWER FREQUENCY, if the problem can't be reproduced there it's likely due to instability between frequencies of CPU and main memory. Bottom line step your oclock up slowly until you hit repeatable instabilities/errors/crashes, and then back it down.
Anyone know off the top of their head an app to monitor the temperature of the CPU? I get the battery temp from inside Set CPU along with a lot of great info except my CPU temp, which is typically important for OC'ers.

Gpu

Is there a way to over clock the gpu on my thunderbolt? It's just a thought, also what is the best kernel and io scheduler combo for both battery life and preformance? I also would like opinions on best aosp roms out there. Currently running thundershed cm7 with thundershed kernel
Sent from my ADR6400L using XDA
I like it
I run imos kernel. I like it more and I can undervolt
Respect existence or
Expect resistance

[Q] Overclocking to 1600Mhz?

I was performing the antutu benchmark test yesterday and found my score to be 2300. I am on baseband 2.1.71 using DoomKernel v06 I have never overclocked even though this kernel allows me to overclock to 1200Mhz I think.
When viewing other scores of my device, there were people that had gotten a benchmark score of 3500 and they had their mobiles overclocked to 1600Mhz. How is that possible?
Ans also is that even safe? I'm afraid of overclocking at all because I fear it may damage my phone.
Is it safe to overclock? if so which kernel is best for this?
Thank you
i had score 3652 in antutu using doomlord v6 @1229MHz with feralab v20 rom. Try that combination
farazk86 said:
I was performing the antutu benchmark test yesterday and found my score to be 2300. I am on baseband 2.1.71 using DoomKernel v06 I have never overclocked even though this kernel allows me to overclock to 1200Mhz I think.
When viewing other scores of my device, there were people that had gotten a benchmark score of 3500 and they had their mobiles overclocked to 1600Mhz. How is that possible?
Ans also is that even safe? I'm afraid of overclocking at all because I fear it may damage my phone.
Is it safe to overclock? if so which kernel is best for this?
Thank you
Click to expand...
Click to collapse
1600 mhz on x10? Impossible..
Sent from my LT22i using xda app-developers app
1401 mhz possible but not 1600 mhz.. theres no kernel can provide a cpu speed of 1600 mhz..
Please press my THANKS Button if i helped you..cheers.
Sent from my own CM7 using XDA premium app..
I think that overclocking got nothing to do with Antutu benchmark result. Because, I tested same Rom with same kernel with various CPU speed, and got similar results, every time.
With X10S v9 and Doomkernel v6 1113 mhz I get 2900.
With DonutHD and Th N5-1 kernel OC 1190mhz I got 3750 on Antutu, and with same Rom and kernel, but now with default CPU speed 998mhz, get 3650 points.
Now on ThGo2 v.17 and Th N5-1 kernel with default clock speed (998mhz) and default governor and scheduler I get 3300.
Sent from my SO-01C using xda premium
farazk86 said:
I was performing the antutu benchmark test yesterday and found my score to be 2300. I am on baseband 2.1.71 using DoomKernel v06 I have never overclocked even though this kernel allows me to overclock to 1200Mhz I think.
When viewing other scores of my device, there were people that had gotten a benchmark score of 3500 and they had their mobiles overclocked to 1600Mhz. How is that possible?
Ans also is that even safe? I'm afraid of overclocking at all because I fear it may damage my phone.
Is it safe to overclock? if so which kernel is best for this?
Thank you
Click to expand...
Click to collapse
Then try to set overclocking to 1.2GHz, You will see what happens
Thanks for the responses, so I guess I will go ahead with overclocking and see how it goes since no one said its not safe.. Im already on doomkernel v6 and using DonutHD, so I hope to improve results.
Can anyone recommend me a good application for over clocking? Is this one good? should I use it? https://play.google.com/store/apps/details?id=com.antutu.CpuMasterFree&hl=en
Also for those saying 1600Mhz isnt possible, run antutu on your x10 and after submitting your score it will compare your score to other x10's and there all the ones at the top are at 1600Mhz
I use the same app. Just remember to test out speeds without apply on boot. If you get reboots or wlod, then turn down the frequency. Mine will reboot 5 out of 10 times running antutu test @1228. But is stable @1190. I also recommend smartassv2 governor & sio scheduler.
And I think a few changes in the build.prop of an XPERIA S will show x10 in test results. every guy wants the best rank they can fake
Sent from my LT28i using xda app-developers app
"No Frills" is free on Google Play.
Sent from my SO-01C using xda premium
Thank you. Ive installed no frills.. which setting should I keep governor and I/O scheduler to? Which are the recommended settings?
*question already answered by Toledojab*
Thank you, Toledojab
ToledoJab said:
I use the same app. Just remember to test out speeds without apply on boot. If you get reboots or wlod, then turn down the frequency. Mine will reboot 5 out of 10 times running antutu test @1228. But is stable @1190. I also recommend smartassv2 governor & sio scheduler.
And I think a few changes in the build.prop of an XPERIA S will show x10 in test results. every guy wants the best rank they can fake
Sent from my LT28i using xda app-developers app
Click to expand...
Click to collapse
True. 1600 mhz is way out of the x10i limits. Theres no proof for that anywhere on net, and beleave me, 1.6 ghz xperia x10 would be news number one, at least here on forum.
Sent from my LT22i using xda app-developers app

Overclocked Benchmarks

Hello all!
I hope some of you like numbers as much as I do. I thought I should run my handset through a series of benchmarks in order to see just what the dev community has unlocked within this device.
Here we go:
Overclocked to 1.72 GHZ - Governor: Performance
Cubed Kernel 1.2.5
Genome ROM v2
BenchmarkPi:
Average of 5 - 337.4 ms
Best of 5 - 224 ms
Linpack:
Average of 5 - 463.059 MFLOPS
Best of 5 - 510.427 MFLOPS
ANTUTU:
Average of 5 - 18396
Best of 5 - 19270
Vellamo:
HTML5 -- 1737
Metal -- 636
Quadrant:
Average of 3 - 8131
Best of 3 - 8364
These results put the Droid DNA well ahead of pretty much all competition for the next few months. I imagine things will get even better once AOSP Roms make their way to this amazing device.
So - does anyone with a higher overclock have any stats? I would be interested in seeing how well this processor scales.
That quadrant seems low. I've gotten 8254 stock unrooted.
Sent from my HTC6435LVW using xda app-developers app
sent from my beastly powered DNA using Tapatalk 2
DSB's Cubed v 1.2.5
Sent from my HTC6435LVW using xda app-developers app
getting there...
DSB and UKB's latest
System Tuner Pro to take it up a notch or two
How did you get 9608 I got 8660 on quadrant with 1.83 gh cubed latest
Sent from my HTC6435LVW using xda app-developers app
Ndaoud360 said:
How did you get 9608 I got 8660 on quadrant with 1.83 gh cubed latest
Sent from my HTC6435LVW using xda app-developers app
Click to expand...
Click to collapse
The benchmarks usually don't turn on all the cores. At least that's what I think because I turn all my cores on and all on the performance governor and I get around the 9500's at 1.83Ghz.
I've received over 9k quadrant and 500+ linpack with 1.5ghz. Strangely, powersave gave me better scores than performance (stock kernel)
On cubed kernel 1.5ghz performance = 587
http://imgur.com/u4N5w
Whats the next step in mobile processing? How fast or powerful can they be?
iOSh8er said:
DSB's Cubed v 1.2.5
Sent from my HTC6435LVW using xda app-developers app
Click to expand...
Click to collapse
23345 cpu! Holy fruck!
Sent from my EVO using xda premium
I love this phone
Sent from my HTC6435LVW using xda premium
I managed to break the mystical 10k marker on quadrant.
I've been more of a lurker, until now.
Anyway, this is with cores set at 1890x4, performance governor setting. Running senseless ROM.
I'd like to thank everyone on XDA for their work on android.
neatojones said:
I managed to break the mystical 10k marker on quadrant.
I've been more of a lurker, until now.
Anyway, this is with cores set at 1890x4, performance governor setting. Running senseless ROM.
I'd like to thank everyone on XDA for their work on android.
Click to expand...
Click to collapse
By the way, while my phone is stable on these settings it drains my battery too fast to be usable. I leave the cores set to 1890, but as long as I don't have the setting on "performance" I actually see decent battery life. My quadrant drops into the upper 9k's though without the governor set to performance.
neatojones said:
I managed to break the mystical 10k marker on quadrant.
I've been more of a lurker, until now.
Anyway, this is with cores set at 1890x4, performance governor setting. Running senseless ROM.
I'd like to thank everyone on XDA for their work on android.
Click to expand...
Click to collapse
You are the chosen one my friend. No, but really... dayyuummmnnn!
neatojones said:
I managed to break the mystical 10k marker on quadrant.
I've been more of a lurker, until now.
Anyway, this is with cores set at 1890x4, performance governor setting. Running senseless ROM.
I'd like to thank everyone on XDA for their work on android.
Click to expand...
Click to collapse
Cheers for breaking 10k but why is your I/O score so low? (I've got 15k+ on the Note 2) Also was expecting the 3D score to be a lot higher on the DNA, kernel doesn't have support for GPU OC? IMO with those CPU / MEM and tweaking 11000-11500 should easily come
tbukkos said:
Cheers for breaking 10k but why is your I/O score so low? (I've got 15k+ on the Note 2) Also was expecting the 3D score to be a lot higher on the DNA, kernel doesn't have support for GPU OC? IMO with those CPU / MEM and tweaking 11000-11500 should easily come
Click to expand...
Click to collapse
True. I could probably have a done a little more tweaking on the I/O score. The kernel used for this does support GPU OC, but I haven't found a tool that I feel comfortable using to OC the GPU yet. That and probably more realistically: I moved on to conquering other things once I managed the 10k score that was my goal.

Categories

Resources