[Scons-users] max-drift vs. Decider

[Dirk Bächle]

Alex,

just want to add one more thing that may not be obvious from my previous 
explanations. The safety-critical case happens, when you use the output 
of machines, drifting in time, combined in a CacheDir.
Now it may occur that one machine writes a changed object file to the 
cached folder, but the mtime of the file is the same as before, by accident.

This is what max-drift tries to protect you against. And this also makes 
clear that by reducing or increasing max-drift, you'll have to trade-off 
between speed and safety for your builds.

Dirk