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Almost zero chance ios 11 will be optimized for older devices

iOS 11ij iPad mini 2 feels so slow for me that I worth downgrade till 11.1 release or 11.2 with kind of optimization

System react desperly slow loading system apps or when invoque control center and multitask
 
gobikerider said:
From what I've seen the 2014+ devices run iOS 11 flawlessly while the orgingal A7 devices are showing there age, mainly due to the weaker gpu (especially on the iPad Air)
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I’ve been running the beta on my iPad Air. I’d say it runs fine. It isn’t snappy but it’s not annoying. If my memory is right my iPad Air got fairly laggy with iOS 9. The most annoying experience was entering text when you first switch to an app. iOS 10 made things much better. I’d say for me iOS 11 seems not significantly worse. Maybe I’m misremembering but I’d say 9 was worse on the Air.
 
neliason said:
I’ve been running the beta on my iPad Air. I’d say it runs fine. It isn’t snappy but it’s not annoying. If my memory is right my iPad Air got fairly laggy with iOS 9. The most annoying experience was entering text when you first switch to an app. iOS 10 made things much better. I’d say for me iOS 11 seems not significantly worse. Maybe I’m misremembering but I’d say 9 was worse on the Air.
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Nah, iOS 8 was the most annoying and laggy. Keyboard lag on that was even more unbearable on iPad 3. I remember getting frequent Safari crash loops on iOS 8, too. I actually found iOS 9 to improve stability and performance.
 
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TMRJIJ said:
The latest 10.5 iPad Pro uses the A10X chip.

My iPad Air 2 (A8X) runs relatively like a new device.
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Yeah, A8X is basically like A9.

IMG_0018.jpg
 
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TMRJIJ said:
The latest 10.5 iPad Pro uses the A10X chip.

My iPad Air 2 (A8X) runs relatively like a new device.
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Yes it does but as I said earlier the latest iPad uses an A9. Id like to see how many pro users out there compared to the iPad.

The 2017 iPad is probably the mainstream device due to the price.
 
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neliason said:
I’ve been running the beta on my iPad Air. I’d say it runs fine. It isn’t snappy but it’s not annoying. If my memory is right my iPad Air got fairly laggy with iOS 9. The most annoying experience was entering text when you first switch to an app. iOS 10 made things much better. I’d say for me iOS 11 seems not significantly worse. Maybe I’m misremembering but I’d say 9 was worse on the Air.
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Wouldn't surprise me ios 9 was iffy on my Air 2 even
 
uhaas said:
Beta 10 seems to have made 5S performance issues disappear. I'm wondering if this close to the GM, if they've started shutting down debugging and trace code in the beta.
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Very likely at this stage.

Thanks for the feedback. That’s good news for iPad Air owners.
 
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JohnnyGo said:
Very likely at this stage.

Thanks for the feedback. That’s good news for iPad Air owners.
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Ehh yah but you guys are still held back by the gpu, Power Vr G6430 which is fine for driving the iPhone resolution but not so much the iPad resolution and then you add in all the nice iOS 11 animations and translucency....oh boi queqe the "iOS 11 ruined my iPad Air" posts
 
pika2000 said:
On the other hand, RAM and NAND flash memory have finite read/write lifetime, and I wonder if this can have an impact.
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I'm pretty sure RAM and flash memory can last many, many years (as in, 50+) before you'll start to notice them failing. I could be wrong, but I thought modern storage was built with longevity in mind.
 
viperGTS said:
I'm pretty sure RAM and flash memory can last many, many years (as in, 50+) before you'll start to notice them failing. I could be wrong, but I thought modern storage was built with longevity in mind.
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It will be interesting to see any statistics on the defect rates of those chips in today's world. I mean those chips get more work off their lives on a constantly-used mobile device vs a stationary PC.
 
The beta works fine on my 6+ as a daily driver, there is slowdown and lag but its a beta and to be expected. If this is the final performance level its fine. Not great but fine. It will be better once we get a few iOS11 updates down the line though. 10.3 was great for me with pretty much 0 slowdown. The only thing that isn't so good on the 6+ is the memory which means multitasking is almost non existent.
 
oplix said:
I would be very careful upgrading to ios 11 immediately on older devices. I'm almost certain that it will take months before subsequent updates are optimized for older devices. With all the new features that rely on the new iphone hardware, ios 11 with it's development timeline will likely only be stable on the new hardware.

Wait until people give feedback and reviews before upgrading

Aside from that, Apple has historically never optimized new ios releases for older devices until people complained in droves nor was it ever in Apple's business strategy to do so. What is more likely is that they completely ignore older device optimization as an indirect way to force people to upgrade.
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The idea is to make you buy a new device. lol
 
viperGTS said:
I'm pretty sure RAM and flash memory can last many, many years (as in, 50+) before you'll start to notice them failing. I could be wrong, but I thought modern storage was built with longevity in mind.
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Nah. Fast and cheap.

NAND flash went from SLC (100K P/E cycles) to 2-bit MLC (3K-10K P/E cycles) to 3-bit MLC (1K P/E cycles). More sophisticated controllers and larger capacities make the reduction in P/E cycles a non-issue.

That said, I don't see how moving from a 32 to 64 bit only OS would affect flash storage longevity at all.
 
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rui no onna said:
Nah. Fast and cheap.

NAND flash went from SLC (100K P/E cycles) to 2-bit MLC (3K-10K P/E cycles) to 3-bit MLC (1K P/E cycles). More sophisticated controllers and larger capacities make the reduction in P/E cycles a non-issue.

That said, I don't see how moving from a 32 to 64 bit only OS would affect flash storage longevity at all.
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You lost me at “fast and cheap”. So not designed for longevity at all, only to run fast and/or lower cost, correct?
 
JohnnyGo said:
You lost me at “fast and cheap”. So not designed for longevity at all, only to run fast and/or lower cost, correct?
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Not longevity, yes.

I remember my first ever SSD from 2009/10 was $120 for 40GB with 34nm 2-bit MLC (5K P/E cycles). That's $3/GB. Nowadays, you can get 500GB with TLC/3-bit MLC (~1K P/E cycles) for $150 or $0.30/GB.

Theoretically, 500GB at 5K P/E cycles gives you 2.5 PB worth of NAND writes. At 1K P/E cycles, that's down to 500 TB NAND writes. More than reasonable endurance for consumer workloads, though.

Mind, there are NAND flash designed for longevity (I think 1 million P/E cycles). Very pricey, though.
 
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Yep. iOS11 GM here on a 6S Plus. I just posted this. The battery is draining fast and the device is laggy. Typical Apple marketing of making old devices feel slow so the upgrade and review seem better. It happens every year, I notice it
 
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