title: What is a good tool for graphing sub-millisecond timelines?
body: <p>I'm trying to produce a timeline for my real-time embedded code.
  I need to show all the interrupts, what triggers them, when they are serviced, how long they execute, etc.   I have done the profiling and have the raw data, now I need a way to show the timeline graphically, to scale.</p>
  
  <p>I've been searching for a good tool, but haven't come up with anything great yet.  Everything that I've found works on timelines of days and years.  I want a graph showing a single 2-millisecond cycle.   For now I'm using Visio, but I keep thinking there must be something easier.   Any ideas?</p>
  
  <p>I'm hoping to produce something like this: <img src="https://www.keil.com/support/man/docs/mcbstr7/mcbstr7_interrupt_func1.png">.<br>
  Unfortunately, mine is more complicated, but that's the general idea.</p>