Develop Bugs

Overclock an A100?

I just picked up an A100 over the weekend and have been impressed by the performance, but was a bit surprised that there are no overclocking kernels for this tablet. Coming from a Nook Color which was running smoothly at 1.3ghz, and an overclocked Epic 4G, I guess I'm spoiled by having the ability to turn the dial up to 11. Also, I realize that the smallish battery life won't improve by running the thing at 1.5ghz.
From what I can see, the bootloader is locked which prevents the application of a ClockworkMod, but isn't there some way to to push an overclock kernel via Odin or a similar app? I'm probably completely clueless here, but I thought I'd ask.

There isn't a whole lot of kernel development going on for this device right now because the ICS update will be coming in January and it wouldn't make sense to develop in Honeycomb just to have it replaced in a couple of months.

True... although the tablet hit the market back in August, and it seems like other devices are overclocked within weeks of release. If Acer manages to get the ICS update out in January, I'll more than pleased. My Samsung Epic 4G just got a Gingerbread update last month.

I just cant imagine how battery will be like if you overclock this thing. Down to 3 hrs maybe?

I'm more looking forward to being able to UC/UV my a100. Setting it at lower frequencies when its idle or simply being used lightly will add a bit more life to the battery.
Sent from my SPH-D700 using xda premium

You can already underclock as long as you have root using setcpu, cant under volt though withouta custom kernel. Between underclock and freezing apps I can use my a100 for about 6hrs straight, with under volting, you could probably get around 7 - 8 hrs.

Ceelos09 said:
I'm more looking forward to being able to UC/UV my a100. Setting it at lower frequencies when its idle or simply being used lightly will add a bit more life to the battery.
Sent from my SPH-D700 using xda premium
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I dont think theres a need to UC to achieve what you want during idle. All I do is set the wifi to turn off when screen is off and my emails fetch at the longest interval. My battery drains probably 1% an hour on idle.

[Q] Any advantage to GPU overclocking?

Just bought the FrancoKernel updater app and was flashing the latest nightly and it asked what GPU speed I wanted. I went with the lowest but is there a performance bump going with a higher speed? Thanks.

Yes.
Small advantage but it is quite noticeable.
Sent From My Sprint Galaxy Nexus via XDA Premium

Not very much.
Sent from my Galaxy Nexus using xda premium

If you´re running highdef games or if you want to benchmark and see how much you can cram out of that phone, it´ll show. Otherwise, for normal usage, I´d say it´s quite pointless.
Beware though, not everyone can run the 512Mhz version, so try it out and if you get artifacts or weird behavior you have to go with the lower one.

Some Google developer explained why overclocking to 512 Mhz is basically pointless. There was a reason to why they chose to stay at a clock of 307 Mhz, but it's been noted that 384 gives a slight performance increase that drains no notable additional battery.

P3aK said:
If you´re running highdef games or if you want to benchmark and see how much you can cram out of that phone, it´ll show. Otherwise, for normal usage, I´d say it´s quite pointless.
Beware though, not everyone can run the 512Mhz version, so try it out and if you get artifacts or weird behavior you have to go with the lower one.
Click to expand...
Click to collapse
It's pretty pointless all the time.
Sent from my Galaxy Nexus using xda premium

Thanks for the response everyone. I will run with the 384mhz clock one since I am a pretty light user.

How much is safe for overclocking?

I'm running Blackout v3.0, and it's running pretty smooth at first. But now my phone is stuffed with bunch of apps, making it running slower and slower. I want to keep those apps so I'm willing to overclock but I afraid of damaging my phone. So I would like to ask what's the safe overclocking frequency? I want the optimum frequency, fast enough and safe/stable.

ImjuzCY said:
I'm running Blackout v3.0, and it's running pretty smooth at first. But now my phone is stuffed with bunch of apps, making it running slower and slower. I want to keep those apps so I'm willing to overclock but I afraid of damaging my phone. So I would like to ask what's the safe overclocking frequency? I want the optimum frequency, fast enough and safe/stable.
Click to expand...
Click to collapse
Any overclocking can be unsafe as it can shorten the lifespan of your memory and CPU. But with that said I run mine at 1200 with no issues. Most people don't go higher than 1600 but anything 1400 or lower is not going to burn it up too quick IMO. Everyones hardware will react differently though.
Sent from my Inspire 4G using xda app-developers app

They usually say phone will get damaged, but I think its a myth. You can go up to 1600. After that it will get unstable.
Sent from my Inspire 4G

ImjuzCY said:
I'm running Blackout v3.0, and it's running pretty smooth at first. But now my phone is stuffed with bunch of apps, making it running slower and slower. I want to keep those apps so I'm willing to overclock but I afraid of damaging my phone. So I would like to ask what's the safe overclocking frequency? I want the optimum frequency, fast enough and safe/stable.
Click to expand...
Click to collapse
I run IceColdSandwich and have found 1459MHz to be the best combo of performance and stability on my phone. Every phone handles OCing a little differently, some can reportedly take over 1600 without a flinch and others will lock regularly with even a slight OC. Just experiment with the "set at boot" option turned off until you find something that works reliably on your phone.

Is it true you guys aren't seeing ill effects on your battery by overclocking like that?
Sent from my HTC Desire HD using Tapatalk 2

asif9t9 said:
Is it true you guys aren't seeing ill effects on your battery by overclocking like that?
Sent from my HTC Desire HD using Tapatalk 2
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I think OC can affect battery drain only if you use an application which utilizes a full cpu load. But, if you're using this app in normal mode, economy will not be great also. So, when you using your phone for calling or general usage you will not see any problems with battery discharge.
I'm using DHD with Blackout v3.0 and I set 1200Mhz for maximum cpu value. I have no problems, phone is stable. Some time ago I used Leedroid ROM and set also 1200Mhz, but phone was rebooted by itself very often. More than twice a day.
You should try to use OC, as someone said above, without "set on boot" option. I think there is no danger for hardware up to 1600Mhz.

asif9t9 said:
Is it true you guys aren't seeing ill effects on your battery by overclocking like that?
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Not under normal use. There's a school of thought that says even though the increased speed requires more power, it can also finish tasks and go back to sleep faster, so it ends up being a wash. I've overclocked all three smartphones I've owned to date and haven't experienced any significant difference in battery life.

ai6908 said:
They usually say phone will get damaged, but I think its a myth. You can go up to 1600. After that it will get unstable.
Sent from my Inspire 4G
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They say that as a precautionary measure just as they say flashing a custom ROM can be dangerous. For people who don't know what they're doing. But precaution aside, just like you said you can go up to 1600 MHz safely on this phone. I know every phone behaves differently but on average no one has issues upto that frequency. But above that frequency the phone might be unstable. The CPU will be drawing much more power at high frequencies and will heat up more. The CPU heating up too much and too frequently reduces the life of the CPU. So it's not a myth.
Sent from my Desire HD using xda premium

2ghz.... the phone is old now. Make it bleed.
Sent from my Desire HD

Don't try to Cross above 1600.

Antutu Benchmark X LG OPTIMUS G SPRINT

Hi guys, here are results of LS970 in antutu Benchmark X.
http://www.mobile-inform.com/content/view/1194/1/
Benchmark X version is a special version of Antutu in wich all the cheats that manufacturers use are disabled. As far as you can see - maximum cpu speed is only 1188 even if 1512 set in SetCpu or CPUMaster.
please do not compare usual version and this one - the results are different - the results on the right - are from the usual version of antutu at 1500 mhz

Ok...
Sent from my LG-LS970 using xda premium

agurzhiy said:
Hi guys, here are results of LS970 in antutu Benchmark X.
http://www.mobile-inform.com/content/view/1194/1/
Benchmark X version is a special version of Antutu in wich all the cheats that manufacturers use are disabled. As far as you can see - maximum cpu speed is only 1188 even if 1512 set in SetCpu or CPUMaster.
please do not compare usual version and this one - the results are different - the results on the right - are from the usual version of antutu at 1500 mhz
Click to expand...
Click to collapse
Our devices automatically lowers the cpu to 1188 when the phone reaches a certain temperature. Try the benchmark when the phone cools down.
Sent from my LG-LS970 using xda app-developers app

it was as cool as ice-cream
i did not feel any heat at all

That's interesting because I have run quadrant in eco mode and had it indicate the clock speed was 1188 and the run it with eco mode and the clock speed register as the expected 1512. Though I'm not sure what is meant by manufacturer tricks. It's not a trick that the cpu can be clocked down when it's not needed.

the trick is any unusual experience.
Usual antutu shows 1,5 , while this one only 1188
another proof is here:http://forum.xda-developers.com/showthread.php?t=2044938
- cpu tweak to enable use of all freqs in high stress times like games and benchmarks
Click to expand...
Click to collapse

It's funny but our stock kernel doesn't support the 1188 frequency we have 1134 then 1242

strange...but you've seen the bench

thunder1979 said:
That's interesting because I have run quadrant in eco mode and had it indicate the clock speed was 1188 and the run it with eco mode and the clock speed register as the expected 1512. Though I'm not sure what is meant by manufacturer tricks. It's not a trick that the cpu can be clocked down when it's not needed.
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Click to collapse
Weird, I've always had the phone tell me it's running at 1188mhz, regardless of whether that setting is on or not.
I hate how the system decides for me when my phone is too hot or not.
Compared to my GNexus, this thing is an ice cube.
I can only guess, but sometimes the GNexus would feel like it was ~120-140°F during movie playback at 50% brightness.
This thing has never reached more than 30 °C (I do have an otterbox)
It really rustles my jimmes how they think anything above a 30°C core temp is outrageously hot, and gives them the right to restrict screen brightness and core frequency.
Just.. I need my AOSP back.
Sent from my LG Optimus Prime G

rsjc741 said:
Weird, I've always had the phone tell me it's running at 1188mhz, regardless of whether that setting is on or not.
I hate how the system decides for me when my phone is too hot or not.
Compared to my GNexus, this thing is an ice cube.
I can only guess, but sometimes the GNexus would feel like it was ~120-140°F during movie playback at 50% brightness.
This thing has never reached more than 30 °C (I do have an otterbox)
It really rustles my jimmes how they think anything above a 30°C core temp is outrageously hot, and gives them the right to restrict screen brightness and core frequency.
Just.. I need my AOSP back.
Sent from my LG Optimus Prime G
Click to expand...
Click to collapse
Amen. Lets hope zv9 update addresses what it thiks heat is. 87° and brightness dims.oh jeez. Also.i achieved 21,968 normal antutu. Was third rank. Was really friggen cool.what a phone. Wish it had dual.radio though.no data while talking and no world capability. Can roam international though
Sent from my LG-LS970 using xda premium

rsjc741 said:
Weird, I've always had the phone tell me it's running at 1188mhz, regardless of whether that setting is on or not.
I hate how the system decides for me when my phone is too hot or not.
Compared to my GNexus, this thing is an ice cube.
I can only guess, but sometimes the GNexus would feel like it was ~120-140°F during movie playback at 50% brightness.
This thing has never reached more than 30 °C (I do have an otterbox)
It really rustles my jimmes how they think anything above a 30°C core temp is outrageously hot, and gives them the right to restrict screen brightness and core frequency.
Just.. I need my AOSP back.
Sent from my LG Optimus Prime G
Click to expand...
Click to collapse
Crwolv said:
Amen. Lets hope zv9 update addresses what it thiks heat is. 87° and brightness dims.oh jeez. Also.i achieved 21,968 normal antutu. Was third rank. Was really friggen cool.what a phone. Wish it had dual.radio though.no data while talking and no world capability. Can roam international though
Sent from my LG-LS970 using xda premium
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Click to collapse
Hey guys, THIS is in the AT&T forum, but I believe it will work here too.
I don't know how risky this could be, I haven't done it, but the option is there.

[Q] CPU Throttling on JB 4.1

I recently installed Houstonn's JB port on an Optimus E973 and find the CPU throttling to be really aggressive compared to stock ICS. The port works perfectly for me (no wifi issues, etc), but the CPU will spend very very little time at 1.5 Ghz and will throttle down to 1.1 almost immediately. Its actually so severe that in terms of user experience, JB seems slower when you use the phone for more than a few minutes.
There was some discussion/consensus that the throttling on ICS was dependent on battery temp, but in JB it seems to depend on CPU temp now (throttling will still occur when battery is < 30C). Just wondering if anyone has a similar experience or can shed some light on this change? Thanks.

I am experiencing the same thing. Not noticing performance issues but noticing the throttling.
Sent from my LG-E973 using xda app-developers app

lunde20b said:
I am experiencing the same thing. Not noticing performance issues but noticing the throttling.
Sent from my LG-E973 using xda app-developers app
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Click to collapse
The throttling will happen no matter what - its to keep the cpu, battery, etc cool enough to prevent damage. I had throttling on ICS but it wasnt noticeable either. Most of the time the CPU would ramp up to 1.5 and get the job done quickly. Since I have upgraded it will only ramp up to 1.1 ghz for the most part (sometimes it will increase to 1.5, but that is uncommon).
I know that Quadrant is next to useless for comparing between phones, but I like to use it for monitoring changes in the performance of a single unit. On ICS, my LGOG would routinely get scores of 7300+ until the phone got quite warm and then it throttled down. On JB I have never seen a score above 6700 and the loss is entirely due to CPU score. Checking CPU Spy shows me that the CPU never hits 1.5ghz throughout the test, even when run on a cool phone.

Aha... found something of interest here.
The odd frequencies of this JB rom have been reported elsewhere.