Date: Wed, 20 Jul 2005 11:48:30 +0200 From: "Thomas E. Zander" <riggs@rrr.de> To: freebsd-current@freebsd.org Cc: freebsd-fs@freebsd.org Subject: Re: mksnap_ffs takes 4-5 minutes? Message-ID: <20050720094830.GR782@marvin.riggiland.au> In-Reply-To: <42DD64AB.3000605@centtech.com> References: <42DD64AB.3000605@centtech.com>
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Hi, On Tue, 19. Jul 2005, at 15:38 -0500, Eric Anderson wrote according to [mksnap_ffs takes 4-5 minutes?]: > This time, when I ran mksnap_ffs, the command took nearly 5 minutes [...] > Filesystem 1K-blocks Used Avail Capacity iused ifree > /dev/da1s1d 406234604 91799154 281936682 25% 1300303 51197103 I have a fs here with similar (but smaller size) parameters concerning inode density and usage: Filesystem 1K-blocks Used Avail Capacity iused ifree /dev/ad1s1d 113390248 92926924 18195520 84% 248434 14424460 time mksnap_ffs'ing gives the following result: 0.007u 1.902s 1:51.94 1.6% 5+217k 4493+8646io 0pf+0w It takes almost 2 minutes which seem to perform similarly to your 5 minutes. (There was not a single file opened when snapping.) I'd expect snapping to speed up by reducing the inode number when doing newfs, but I haven't verified this right now. Riggs (f'up to freebsd-fs) -- - "[...] I talked to the computer at great length and -- explained my view of the Universe to it" said Marvin. --- And what happened?" pressed Ford. ---- "It committed suicide." said Marvin.
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