Date: Sat, 6 Nov 2004 16:42:39 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: scrappy@hub.org Cc: freebsd-stable@FreeBSD.org Subject: Re: Don's changes to fsck on 4.x ... Message-ID: <200411070042.iA70gdPV050058@gw.catspoiler.org> In-Reply-To: <20041106162652.U46679@ganymede.hub.org>
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On 6 Nov, Marc G. Fournier wrote: > > Well, finally had a reason to use it, and its running right now ... seems > a bit slower in phase 2 then before ... is to be expected? Looking > through the patch, it seems that all pass's were affected, so this might > be now the norm ... after ~39minutes running on a very large file system, > hitting ctl-T periodically, I'm up to about 50% through Phase 2 ... so far > *knock on wood* no errors being generated by fsck itself, but that doesn't > mean anything :) Under normal circumstances, there shouldn't be any noticeable difference in performance. If there are a lot of zero link count files, phase 1 should be very slightly faster because the zero link count file list no longer needs to be allocated, and phase 4 should be a lot faster. Most of the time in phases 1 and 2 is consumed by disk reads. The only change to phase 2 was the addition of the new inode states to a couple of case statements and an if statement which should not affect the amount of I/O done and CPU time would only be affected by a miniscule amount, so I would not expect any change to the performance of that phase.
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