josh
/
Teacup_Firmware
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

run-in-simulavr.sh: add statistics output for LED On Time. 

As it's still a bit cumbersome to go through the whole .vcd file
to find the highest delay between On and Off, do this search
automatically and output an statistics. Can look like this:

  Statistics (assuming a 20 MHz clock):
  LED on occurences: 838.
  Sum of all LED on time: 262055 clock cycles.
  LED on time minimum: 306 clock cycles.
  LED on time maximum: 717 clock cycles.
  LED on time average: 312.715 clock cycles.

This should give an reasonable overview of wether and roughly
how much a particular code change makes your code slower or
faster. It should also show up showblockers, like occasionally
huge delays.

BTW., the above data was collected timing the step interrupt when
running short-moves.gcode with the current firmware.
This commit is contained in:
Markus Hitter 2014-06-15 18:45:51 +02:00
parent da08c35edd
commit fdfd202e5d
1 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
testcases/run-in-simulavr.sh
View File

@ -176,6 +176,10 @@ EOF
xPos = yPos = 0;
lastxTime = lastyTime = 0;
ledOnTime = 0;
ledTimeMin = ledTimeMax = 0;
ledTimeCount = 0;
ledTimeSum = 0;
}
/^#/ {
time = substr($0, 2);
@ -236,12 +240,34 @@ EOF
ledOnTime = time;
} else { # falling flange
print time " b" bit " " ledID;
if (ledOnTime != 0) { # ignore pin initialisation
print ledOnTime " b" print_binary(time - ledOnTime, 32) " " ledTimeID;
if (ledOnTime != 0) {
ledTime = time - ledOnTime;
print ledOnTime " b" print_binary(ledTime, 32) " " ledTimeID;
ledTime /= 50; # Convert from nanoseconds to clock cycles.
if (ledTimeMin == 0 || ledTime < ledTimeMin) {
ledTimeMin = ledTime;
}
if (ledTime > ledTimeMax) {
ledTimeMax = ledTime;
}
ledTimeCount++;
ledTimeSum += ledTime;
}
}
}
}
END {
if (ledTimeCount > 0) {
print "Statistics (assuming a 20 MHz clock): " > "/dev/stderr";
print "LED on occurences: " ledTimeCount "." > "/dev/stderr";
print "Sum of all LED on time: " ledTimeSum " clock cycles." > "/dev/stderr";
print "LED on time minimum: " ledTimeMin " clock cycles." > "/dev/stderr";
print "LED on time maximum: " ledTimeMax " clock cycles." > "/dev/stderr";
print "LED on time average: " ledTimeSum / ledTimeCount " clock cycles." > "/dev/stderr";
} else {
print "Debug LED apparently unused." > "/dev/stderr";
}
}
' < "${VCD_FILE}" | \
sort -g | \
awk '