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Alleged 2.1 slowdown explained

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deputc26

Member
I am not sure if this has been brought up before (searching the forum for 2.1 brings up about 10^123 results) but ZDNet aired an article with a video of 2.0.1 rendering a 2d ball at 2x the speed of a 2.1 ESE81 Droid. The 2.1 phone seemed speed governed at 30fps and I believe that is exactly what it happening, in an effort to save battery 2.1 is preventing the phone from working harder than necessary i.e. more than 30fps.

Edit: Wouldn't want to get attacked by a parrot, http://blogs.zdnet.com/Burnette/?p=1895
 
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deputc26 said:
I am not sure if this has been brought up before (searching the forum for 2.1 brings up about 10^123 results) but ZDNet aired an article with a video of 2.0.1 rendering a 2d ball at 2x the speed of a 2.1 ESE81 Droid. The 2.1 phone seemed speed governed at 30fps and I believe that is exactly what it happening, in an effort to save battery 2.1 is preventing the phone from working harder than necessary i.e. more than 30fps.
Click to expand...

I ought to wack you with my mod stick for posting this without a link.;)

You do have an edit key.:)
 
While this could be correct, I do not have any noticeable slowdown with 2.1. I've read some are sluggish and that should not happen in any case.

I did a fresh install of stock 2.0.1 before manually installing the 2.1 upgrade. The phone is snappy as ever. What some people describe sounds like they need to do a factory reset.
 
Yes, I have been scanning around to find more info about this and those two articles were very intriguing and I am somewhat relieved to know my case is not so special. After the upgrade to 2.1 I noticed an immediate improvement in some areas like the browser for instance, but noticed a choppiness or slowdown in others like the UI & my emulators (Snesoid & Nesoid.)

I tried to correct the issue by performing power cycles and battery pulls, but to no avail. Last night I did a factory reset from the settings (not the boot screen) and the UI has gotten better, but my emulator is still very choppy when before the upgrade it was not.
 
I have had no lag issues after the update. 2.0.1 used to have a bit of a lag or what i call a "hiccup", takes a second for some inputs to register.

I really like this new update.
 
MrKleen said:
While this could be correct, I do not have any noticeable slowdown with 2.1. I've read some are sluggish and that should not happen in any case.

I did a fresh install of stock 2.0.1 before manually installing the 2.1 upgrade. The phone is snappy as ever. What some people describe sounds like they need to do a factory reset.
Click to expand...
It isnt something you can really see or notice. If I'm not mistaken TV is reduced to 30FPS.


I am curious why the ball on the top droid's screen moves so much faster than the bottom screen. Drawing a ball at a specific speed has nothing to do with the FPS...
 
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MrKleen said:
While this could be correct, I do not have any noticeable slowdown with 2.1. I've read some are sluggish and that should not happen in any case.

I did a fresh install of stock 2.0.1 before manually installing the 2.1 upgrade. The phone is snappy as ever. What some people describe sounds like they need to do a factory reset.
Click to expand...

Well, since those of use with rooted phones found it necessary to wipe the data partition when moving from a 2.0.1 ROM to a 2.1 ROM; this would make sense (since this is essentially what the upgrade is doing) - it would have been better if the update had been programmed to back the data partition up to the SDcard, perform the update, and restore the apps (but not other data)

There's probably something getting left behind in the cache or data partition that is causing issues.
 
iPirate said:
MrKleen said:
While this could be correct, I do not have any noticeable slowdown with 2.1. I've read some are sluggish and that should not happen in any case.

I did a fresh install of stock 2.0.1 before manually installing the 2.1 upgrade. The phone is snappy as ever. What some people describe sounds like they need to do a factory reset.
Click to expand...
It isnt something you can really see or notice. If I'm not mistaken TV is reduced to 30FPS.


I am curious why the ball on the top droid's screen moves so much faster than the bottom screen. Drawing a ball at a specific speed has nothing to do with the FPS...
Click to expand...

It is not drawing the ball at a specific speed... it is drawing the ball as fast as the device can render it. This is why the higher framerate makes the ball move faster. It's like running a timedemo in the old Quake games... the faster your framerate, the faster the timedemo would run through because it's rendering the frames as fast as possible.
 
I download and installed the test app from the links above. The info below is copied from that page.

"You can try my test app and it's found here with instructions on how to install with Astro:
Droid 2D Test - Android 2.1 OS bug

If your Droid has the problem my test app will show the following:

Clock FPS: will hover around 60
Display FPS: will hover around 30

On all other Android devices I have both hover around 60. Also with a Droid on 2.0.1 both hover around 60.

My results were: Clock FPS: 60 - Display FPS: 30

I'm running UD 9.0 which is a 2.1 build. So my guess there are many of us that have this FPS speed reduction.

Mike
 
Yea I think that fits my situation because the UI slowdown was corrected by a factory reset but my emulator still runs choppy. Btw I've always been running stock android,
 
k1ng617 said:
Yea I think that fits my situation because the UI slowdown was corrected by a factory reset but my emulator still runs choppy. Btw I've always been running stock android,
Click to expand...

Emulators are slow on all 2.1 builds, there was a thread on it over at alldroid some months ago.
 
Using AdamZ Smoked Glass ROM 6.01 here...Not overclocked.

Seems to be hanging around Clock FPS: 60 Display FPS: 30
 
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