LFS or FFS, which one is the more reliable and faster file system in terms 
of recovery from system failure?

Now I am studying the recovery performance comparison of the NetBSD 
Log-structured File System and the NetBSD Fast File System. From some 
papers I know that LFS offers superior performance, but my test results don
’t provide the proof . LFS isn’t faster and more reliable than FFS, 
sometimes it is even worse. I don’t know why does this happen? Are results 
of my test wrong? Will you please give me some direction?

ps: System description:

	Intel motherboard
	2.4Ghz Pentium 4
	512M of DDR333 memory
	
On wd0, I created a partition wd0f and wd0g for test, using 1000M 
size,1024b fragment
size, and 8192b block size. wd0f had its type changed and was
prepared using newfs(8) or newfs_lfs(8).

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