Kevin O'Connor wrote:
I wrote a script that can be used on a host machine to read from the serial port and output timing information on each line received.
After stty I've used tai64n for this. I then wrote taidelta to show the time difference between tai64n output lines.
http://cr.yp.to/daemontools/tai64n.html
No web for taidelta yet, but I'll give out source.
It also tries to adjust for time spent by the target machine actually generating the serial reports. The script is attached if anyone wants to use it (it requires python and the pyserial package).
I like that it's very simple!
Kevin O'Connor wrote:
Nope - looks like calibrate_tsc is taking 2.9 seconds to calibrate:
Look for a really long option with TSC in the name. It's set for epia-m. We added it in Hamburg to control how to initialize timers. I think you're getting the slower method.
//Peter