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iPhone Iphone 5 ram is low by jb tweaks
- Thread starter borgqueenx
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Unfortunately, it isn't guaranteed to work - at least it refused to work with me several times. (I've also recommended this way of CPU / memory usage monitoring in my dedicated article.)
It refuses to work for me as well from time to time, I just "re-register" the phone in Xcode and start Instruments again...
I don't find this a normal behavior if I have so much RAM left ..
Well, I'm using SBSettings' free RAM in Status bar. I have 300+ MB free and iOS is closing all my other opened apps when using facebook..
The problem in my case is not how much RAM is used by x and y processes but why iOS is closing my running apps when there is a lot of free RAM!?
Finished testing. What you see is perfectly normal: the Facebook app is VERY sloppily engineered. There doesn't seem to be freeing up resources at all - not even when you send it in the background. On my iPad 3, scrolling thru the main timelist (or whatever it's called - I'm not a really active Facebook user) quickly resulted in the memory usage of the app's increasing to 120 Mbytes.
All in all, the Facebook folks should fire up Instruments and fix the leaks... before that, it will ALWAYS kill suspended tasks.
Thanks for testing.
What I don't find normal is that iOS decide to close other running apps when I have a lot of free RAM. The OS is responsible for the memory management, not the apps.. I don't think AppStore apps can kill other apps, the iOS itself does that. Appstore apps run in a sandbox environment. Also, as a result of this, we have local storage per apps..
Yup, it's iOS that's killing.
I'll run some serious tests to find out whether this is iPhone 5-specific or also applies to other iDevices and what toggles iOS to do this - the prompt increase in the memory usage of an app or what. The Facebook app can, for example, increase its memory usage from 0 to 120Mbytes in, say, 20 seconds (when you quickly scroll over its list of entries) - iOS may extrapolate it may need a ot more memory based on this and quickly frees up 200-300 Mbytes in advance so that it can be safe even when the Facebook (or any other) app needs 400Mbyte after, say, 20 seconds, it will have.
All this may be connected to the rate (quickness) of memory consumption. While Safari, which is also a memory hog particularly on Retina devices, is far slower to increase memory use (unless you open dozens of tabs in 2-3 seconds), Facebook seems to allocate hundreds of Megabytes of RAM in no time. This may be the reason for iOS' killing backgrounded tasks so quickly when running the FB app, unlike with, say, Safari.
This sounds as a plausible explanation..
@hafr, I don't know.. this happens with facebook frequently while I can use other apps for hours and this aggressive task killing issue isn't occurring.
I don't think I'm using any facebook related tweak (I've used MesasgeBox in past)
For some odd reasons on both my gf and my jailbroken iP5 FB is already running in the background from a fresh reboot or respring. At least thats what sbsettings processes says.....#
Wow, very good testing! Thank you. I have always suspected as much, the iphone 5 handles FB pretty well, but it crashes regularly with the ipad Mini and I suspect it is due to the lower RAM. Your tests have confirmed that for me. That is if I am evening interperating your tests correctly. ha.
You are. There don't seem to be capable iOS programmers at FB... The memory handling of the Facebook app is complete trash - it just doesn't free up resources. I might need to lecture them on iOS programming maybe?
