How to check the time between two breakpoint hits ?

Dear Community,

I'm using HW timer to get the interrupt at every 250uSec, and when I'm checking with below setting it is showing as 200 uSec.

Note : Break point is kept in ISR. 

 

May i know if any other way to check the time gap between two breakpoints ?

How to pause the HW timer when emulation is stopped ?

Thank you!