Date: Mon, 15 Feb 2010 16:40:03 GMT From: David Naylor <naylor.b.david@gmail.com> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/143732: [patch] mtree(1) does a full hierarchy walk when requested to just update structure (-u -e) Message-ID: <201002151640.o1FGe3gu060491@freefall.freebsd.org>
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The following reply was made to PR bin/143732; it has been noted by GNATS. From: David Naylor <naylor.b.david@gmail.com> To: bug-followup@freebsd.org Cc: Subject: Re: bin/143732: [patch] mtree(1) does a full hierarchy walk when requested to just update structure (-u -e) Date: Mon, 15 Feb 2010 18:34:46 +0200 Using my "real" world benchmark (see http://unix.derkeiler.com/Mailing- Lists/FreeBSD/current/2010-01/msg00453.html) I have achieved a 20% speedup using the previously attached patch. My results: # time ./ports-union-builder.sh (old mtree) 8123.25 real 2280.53 user 6319.77 sys # time ./ports-union-builder.sh (new mtree) 6456.11 real 2272.07 user 5778.74 sys By my estimated the hierarchical walking of mtree resulted in an additional 28 minutes real time and 9 minutes system time.
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