From: Jesper Louis Andersen (jlouismongers.org)
Date: Wed Jul 02 2003 - 13:50:27 CDT

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Quoting Marco Peereboom (marcopeereboom.us):
> I use softupdates just about everywhere. Sure there are corner cases
> where one can loose some data however I (usually) prefer the
> performace boost over the potential to loose data. Keywords here are
> UPS, stability and easily recreated/restored data.

I might be wrong here but:

1. If you cannot afford to loose some data your program should use
fsync(2) to flush the in-core state down to the disk. If the semantics
in OpenBSD is not that way, I would like to know how I can do it safely.
At least that is the original semantics of fsync(2) as far as I know.

FreeBSD seems to support the thing written above at least.

2. By using softupdates you trade memory for speed. I do not know if
this issue is real though as I do not know how much memory the
dependency graph uses memory.

--
j.

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