> I time mkfile'ing a 1 gb file on ufs and copying it [...] then did the same
> thing on each zfs partition.  Then I took snapshots, copied files, more
> snapshots, keeping timings all the way. [ ... ]
> 
> Is this a sufficient, valid test?

If your applications do that -- manipulate large files, primarily copying them 
-- then it may be.

If your applications have other access patterns, probably not.  If you're 
concerned about whether you should put ZFS into production, then you should put 
it onto your test system and run your real applications on it for a while to 
qualify it (just as you should for any other file system or hardware).

Anton
 
 
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