Android1184
Newbie
Ive heard of something called jit and ive read that it might be better to have it disabled. Should I and if so how do I do it?
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Root JIT? What is it?
- Thread starter Android1184
- Start date
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- Tags
- htc droid eris
Just In Time compiling. See Just-in-time compilation - Wikipedia, the free encyclopedia
Should you disable it? Well, Froyo was built optimized with JIT. If you are running a 2.1 ROM - xtROM or xtrSENSE, for example - you should probably not enable JIT (it is disabled by default in those ROMs). If you are running a 2.2, or Froyo ROM, you should probably leave it enabled. It is true that there have been apps in the past that do not run well with JIT enabled - Pandora rings a bell - but I believe that particular problem was solved.
There is no harm in disabling JIT in 2.2 to see how your phone runs, but I am willing to guess that if you run it without JIT (you need to restart the phone to enact the change) for a few days you will probably not notice a difference. If you do, and things are better, leave it that way.
Should you disable it? Well, Froyo was built optimized with JIT. If you are running a 2.1 ROM - xtROM or xtrSENSE, for example - you should probably not enable JIT (it is disabled by default in those ROMs). If you are running a 2.2, or Froyo ROM, you should probably leave it enabled. It is true that there have been apps in the past that do not run well with JIT enabled - Pandora rings a bell - but I believe that particular problem was solved.
There is no harm in disabling JIT in 2.2 to see how your phone runs, but I am willing to guess that if you run it without JIT (you need to restart the phone to enact the change) for a few days you will probably not notice a difference. If you do, and things are better, leave it that way.
I asked a similar question in one of my post's and didn't get answer but I have one now. Thanks. 
Praetorian
Well-Known Member
I think it depends on the specific Eris. Whenever I run JIT with 2.2 my phone runs fine for a day or 2 then starts lagging really bad. Are there other variables that could be contributing? Probably. But it works better for me iwth it off so thats how I leave it. Right now I have my 2.2 rom running as smooth as xtrROM and thats saying alot.
JIT disabled
Autokiller set to strict
CPUBoost w/ governor set to ondemand with 710/245 cpu using CFSv9.
JIT disabled
Autokiller set to strict
CPUBoost w/ governor set to ondemand with 710/245 cpu using CFSv9.
Well, if we are trading anecdotes, I have tried running CELB with JIT disabled and it lags more for me (and seems to burn battery faster) than JIT at default enabled. I think it's less the Eris than it is the mix of user apps that you have installed.
And, I can't run my phone at Autokiller strict, as it starts shutting down apps that I want to keep running in the background (namely, Tweetdeck), so updates stop being delivered. If you are going to play with Autokiller - and I agree that it is a great app - I'd start with "Optimum" defaults and see if things are better, then start dialing up to higher levels.
But, again, everyone's requirements are different.