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mobilehavoc · 11-12-2007, 05:55 PM

Originally Posted by Tinman

I recently updated to 1.1.2 and have just now gotten around to reinstalling the SysInfo app.

I had checked the Hardware specs within SysInfo before updating to 1.1.2 and the CPU Frequency was 400 MHz. The Bus Frequency was 100 MHz.

But now in 1.1.2 CPU Frequency is shown as 412 MHz with Bus at 103 MHz.

Can anyone in 1.1.1 test this? 1.0.2? 1.1.2?

I don't know if this is an update thing, a SysInfo thing, or perhaps the speed does indeed fluctuate.

Thanks,
Mike

Most mobile ARM CPUs use some form of cpu scaling to make the most out of battery life - which is probably what you're seeing. I always thought the supposed Samsung ARM CPU in the iPhone was rated for 600mhz too.

If you think about it, it doesn't make sense to run the CPU at full speed unless there's sufficient load.

Using VT-Term100 or SSH you can run 'top' on your iPhone which gives you a live sys monitor (auto refresh). Using SSH you can leave this open and then run stuff on the iPhone. You rarely see CPU % go higher than 60% for more than a second. This leads to believe 400mhz is the battery saving frequency and it only runs at 600mhz when needed.

11-12-2007, 05:55 PM	#4 (permalink)
mobilehavoc Join Date: Jul 2007 Posts: 158 Thanks: 0 Thanked 0 Times in 0 Posts	Originally Posted by Tinman I recently updated to 1.1.2 and have just now gotten around to reinstalling the SysInfo app. I had checked the Hardware specs within SysInfo before updating to 1.1.2 and the CPU Frequency was 400 MHz. The Bus Frequency was 100 MHz. But now in 1.1.2 CPU Frequency is shown as 412 MHz with Bus at 103 MHz. Can anyone in 1.1.1 test this? 1.0.2? 1.1.2? I don't know if this is an update thing, a SysInfo thing, or perhaps the speed does indeed fluctuate. Thanks, Mike Most mobile ARM CPUs use some form of cpu scaling to make the most out of battery life - which is probably what you're seeing. I always thought the supposed Samsung ARM CPU in the iPhone was rated for 600mhz too. If you think about it, it doesn't make sense to run the CPU at full speed unless there's sufficient load. Using VT-Term100 or SSH you can run 'top' on your iPhone which gives you a live sys monitor (auto refresh). Using SSH you can leave this open and then run stuff on the iPhone. You rarely see CPU % go higher than 60% for more than a second. This leads to believe 400mhz is the battery saving frequency and it only runs at 600mhz when needed.