Arm Development Studio forum performance in flash or RAM

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performance in flash or RAM

Note: This was originally posted on 6th July 2010 at http://forums.arm.com

Hello.

I tried to improve the speed of an IRQ function by putting it to RAM.
The function is in fact in RAM (as an assembly view and the debugger show), but the time spent is the same than in Flash.
I use a test point and an oscilloscope to check the duration, not a software estimation.
µP : STM32F101 @ 36MHz, 1 wait state.

Why do I get the same result ?
What do I miss ?

Thanks for your help
Denis