Optimizing stable pages

Posted Dec 10, 2012 18:11 UTC (Mon) by dlang (guest, #313)
In reply to: Optimizing stable pages by Cyberax
Parent article: Optimizing stable pages

> CoW using VM tricks is quite often _inferior_ in speed to simple copying.

COW is slower if the copy actually needs to take place, but faster if the copy is never needed.

The question is how likely are you to need to do the copy.