[Koha-devel] Restart plack when needed

[Jonathan Druart]

Hi devs,

A couple days ago I found  that the --reload option of plackup causes
a high CPU load (around 35%). If I remove it, the process is around 1%
(when sleeping).
So I have tried inotify2 (Linux::Inotify2) to add watchers and restart
plack when a file is changed.
But 1/ It's not recursive and I will have to script without knowing
the perf impacts and 2/ It will be terrible when checking out another
git branch (1 restart per file changed!).

After a talk with a friend, I decided to use a git hook and map a key
in my vim config to do so:

The git hook:
.git/hooks/post-checkout
#!/bin/sh
exec /usr/local/bin/restart_plack
exit 0

The vim map command:
map <F2> <Esc>:w<CR>:!(/usr/local/bin/restart_plack > /dev/null 2>&1)&<CR>a

And that's all :)

To be complete, here is my restart_plack script: http://pastebin.com/8wFSC4fJ

Cheers,
Jonathan