[Nexus 7 Original Development] Rhian:
ROMs put to the test...

This is NOT a problem in PA. It's a subjective observation, largely a placebo effect, unless you can put some numbers and logcats/kmsgs with it to show where PA is lagging/problematic.

The "Nexus 7 typical speed" is based on what? Stock? First PA built? First RC?

I'm so fed-up with the argument that "ROM A is better performing than ROM B" that I decided to put the ROMs to the test.

I do stress and underline that it's PURELY a numbers game, it says NOTHING about personal preference for features, enhancements and such.

The tests I performed showed that CROMi is simply the fastest of the bunch I tested, yet I prefer to use PA 3.5 on my Nexus 7, because I like it.

All ROMs were installed with a full wipe (except for internal storage), used with the standard features and recommended gapps, along with my preferred apps which were restored using Titanium backup. All ROMs did get sufficient time to have the (dalvik-)cache settled and whatever needs to fall into place during the first few minutes. (I don't know if that's myth or fact, but I let them all wait).

No modifications to the governors were made, all ROMs were used for the testing as provided!

My Nexus 7 is a 16Gb WiFi version, purchased in October 2012. I mention this because Asus might have (or not) made slight hardware modifications in the different models/manufacturing dates.

The ROMs used for testing: Stock 4.2.2, CM 10.1.0 RC2, PA 3.5 (13/May), SlimBean .5, CROMi 4.1. All can be found with search or Google. The PA build of 13/5 can be found on goo.im.

The scores (using Quadrant):

CROMi (stock CROMi kernel/NO tweaks):

Total: 4904 CPU: 11554 Mem: 2973 I/O: 6504 2D: 1042 3D: 2449

PA:

Total: 4249 CPU: 11574 Mem: 1601 I/O: 5332 2D: 251 3D: 2486

SlimBean:

Total: 3750 CPU: 11532 Mem: 2818 I/O: 1595 2D: 330 3D: 2473

Stock:

Total: 3426 CPU: 11200 Mem: 2113 I/O: 1275 2D: 201 3D: 2342

CM (NO performance tweaks):

Total: 3422 CPU: 11327 Mem: 1854 I/O: 1273 2D: 222 3D: 2432

I'd say the above shows clearly and objectively on which ROM you get the highest benchmark scores. Subjectively I was inclined to think that SlimBean was faster while using it. Yet I do like PA most on my Nexus, while I prefer CROMi on my TF300 and Slimbean on one of my Sensation phones.

I have screenshots of all tests, although showing them hardly proves a thing, I could have made them on my TF300 or modified them.

For

unfair

comparison I also installed CROMi with the Motley kernel and all available tweaks (in aroma, no extras were downloaded), simply to show how relatively easy it is to get a high score:

CROMi (Motley kernel/ALL tweaks):

Total: 5658 CPU: 12590 Mem: 3037 I/O: 8881 2D: 1090 3D: 2692

versus CM with performance tweaked (in settings, performance):

Total: 3733 CPU: 11390 Mem: 2988 I/O: 1574 2D: 249 3D: 2464

<sarcasm on> And how again was CM faster? <sarcasm off>

If you really want to know what runs best for you on your device simply use a benchmark to eliminate any placebo effect.

As for development goals, I do find it rather arrogant to think you have any say in where the dev(s) decide to take their ROM or on what part they focus without them asking us.

Ultimately you (we) should be grateful for their hard work and making their ROMs available to US. We (as end-users) can only report any bugs and make polite feature requests.