Date: Sun, 15 Mar 2009 05:15:00 +1100 From: andrew clarke <mail@ozzmosis.com> To: prad <prad@towardsfreedom.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: the pause that removes Message-ID: <20090314181500.GA92129@ozzmosis.com> In-Reply-To: <20090312223713.55535586@gom.home> References: <20090312223713.55535586@gom.home>
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On Thu 2009-03-12 22:37:13 UTC-0700, prad (prad@towardsfreedom.com) wrote: > one of the neat things i've found about freebsd vs linux is the > 'instantaneous' rm. > > when you remove a large file or a substantial directory, freebsd does > it right away ard you get your prompt back, while with every linux i've > tried, you wait and wait and wait. > > i presume freebsd just takes the pointer to the file out so it can be > overwritten, while may be the linuxes fill stuff with zeros or > something like that?? > > is this instantaneity a result of the ufs file system vs say ext3 or > reiser? I've been under the impression that this (fast deletes) had something to do with the "soft updates" feature of UFS. Although, the Wikipedia page doesn't talk about deleting files in particular, so I could be completely wrong about that. http://en.wikipedia.org/wiki/Soft_updates
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