On Sat, Apr 21, 2001 at 08:01:20AM -0700, David O'Brien wrote:
> On Fri, Apr 20, 2001 at 10:47:48AM -0500, Andrew Hesford wrote:
> > I do see both synchronous writes and asynchronous writes on my
> > filesystem (as reported by mount); what are these?
>
> The default mount is "nosync". synchronous metadata, asynchronous data.
> Compare with the "async" and "sync" mount options.
Hey, thanks for the info. The synchronous metadata explains why, when I
first started using FreeBSD, it took ages to delete a highly-populated
directory (it might have been the ports tree, or something that size).
With soft updates, however, the deletion happens much quicker. Is this
because soft updates does everything asynchronously, but in a structured
(ordered) fashion? If so, how often is the cache flushed to disk, and is
it user-configurable?
--
Andrew Hesford
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