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.
##############################################################################
# #
# Teacup - lean and efficient firmware for RepRap printers #
# #
# by Triffid Hunter, Traumflug, jakepoz, Markus Hitter, many others #
# #
##############################################################################
For installation instructions, see
http://reprap.org/wiki/Teacup_Firmware#Simple_Installation and/or
http://reprap.org/wiki/Teacup_Firmware#Developer_Installation
For documentation, see
http://reprap.org/wiki/Teacup_Firmware
##############################################################################
# #
# This firmware is Copyright (c) ... #
# 2009 - 2010 Michael Moon aka Triffid_Hunter #
# 2010 - 2013 Markus "Traumflug" Hitter <mah@jump-ing.de> #
# #
# This program is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the Free Software #
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #
# #
##############################################################################
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