Do we need to keep space under 80% on QNX6’s Power-Safe filesystem?
On Solaris’s ZFS, to maintain performance, it is known as a good practice keeping pool space under 80%.
How to improve ZFS speed when the pool usage is 80% and above
Is this practice also valid for QNX6’s Power-Safe filesystem?
Both QNX6’s Power-Safe filesystem and ZFS are based on copy-on-write (COW) mechanism, so I’m assuming the Power-Safe filesystem has somewhat similar characteristics of ZFS. So, I tried to find a description mentioning this 80% rule for QNX’s Power-Safe filesystem, but, I couldn’t find it.
Is there anyone who has an experience on this matter?