dump/restore in OSx 4.4

Chris Torek chris at MIMSY.UMD.EDU
Fri May 26 13:56:16 AEST 1989


In article <11218 at polyslo.CalPoly.EDU>
unmvax!polyslo!steve at ucbvax.Berkeley.EDU (Steve DeJarnett) writes:
>Can anyone in netland give any good reason why restore takes as 
>much as 4x longer to run than dump does on the same filesystem??  

This is typical of most 4BSD systems.  Essentially, the reason is
that restore uses the file system in a straightforward manner, and
dump reads the raw device in a much-optimised manner.  Since full
dumps are done much more often than full restores, this seems quite
reasonable.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris at mimsy.umd.edu	Path:	uunet!mimsy!chris



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