The prep-script.sh will setup the latest Node and install the latest perf version on your Linux box.
When you want to generate the flame graph, run the following (folder locations taken from install script):
sudo sysctl kernel.kptr_restrict=0
# May also have to do the following:
# (additional reading http://unix.stackexchange.com/questions/14227/do-i-need-root-admin-permissions-to-run-userspace-perf-tool-perf-events-ar )
sudo sysctl kernel.perf_event_paranoid=0
| #!/bin/bash | |
| [ -z $3 ] && AROUND=2 || AROUND=$3 | |
| coffee -cp $1 | nl -b a | perl -pe "\$_ = \"\033[1;29m\$_\033[0m\" if (\$. == $2)" | head -n $(($2+$AROUND)) | tail -n $(($AROUND * 2 + 1)) | |
| # Usage: dcoffee path/to/file.coffee <LINE NUMBER> [NUMBER OF LINES BEFORE/AFTER] | |
| # A tiny bash script for finding a line in the compiled JavaScript with some context around it, | |
| # useful to quickly check where errors in compiled JavaScript are coming from. | |
| # https://github.com/jashkenas/coffee-script/issues/558 FTW |
