Hans Reiser wrote:
Research for filesystems generally says that as you get more than 85%
full the performance goes down, by a lot as you get close to 100%. 5%
is probably too little rather than too much.
Wow. What is all that space used for? Other journalling file systems that
I have seen have limited things like journals to a much smaller space,
expressed in megabytes, and a much smaller number than thought originally.
The bigger journals just didn't end up adding to the performance measurably
and were just considered to be a waste of space that could be used more
usefully.
Thanx...
ps