Sidetracked: why gjournal over soft-updates (Was: Re: UFS2 Journaling implementation detail)

Dieter freebsd at
Sun Apr 27 05:11:14 UTC 2008

> SU requires that data it once sends to the drive gets written
> immediately, not cached by the drive. Modern desktop drives
> don't do that

They do if you set them to write-through cache instead of
write-back cache.

Modern SATA drives also provide NCQ.  When is FreeBSD going
to support NCQ?

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