Please use xargs to speed up snapshot removal

[Paul Frederiks]

The automatic removal of snapshots takes longer than necessary. I've set up backintime to take a snapshot every 10 minutes, but the smart removal of most of the snapshots of the day before yesterday block the second and third snapshot of the day.

A significant portion of that time is spend in find and chmod. It is possible to speed up this step by using xargs:

paul@Toren:/media/timemachine/backintime/Toren/paul/1$ time find 20130318-124002-222/ -type d -exec chmod u+wx {} \;

real 0m32.897s
user 0m0.812s
sys 0m5.860s

paul@Toren:/media/timemachine/backintime/Toren/paul/1$ time find 20130318-123002-824/ -type d -print0 | xargs -0 chmod u+wx

real 0m14.497s
user 0m0.236s
sys 0m2.152s

Those were two practically identical snapshots, so the only difference is the use of xargs instead of -exec.

[Germar (germar)]

If find version is >4.2.12 we could also use 'find ./ -type d -exec chmod u+wx {} +' which will do the same as xargs.
Dan what do you think?

Regards,
Germar