Date: Wed, 15 Mar 2000 12:11:48 PST From: Darryl Okahata <darrylo@sr.hp.com> To: Anatoly Vorobey <mellon@pobox.com> Cc: current@freebsd.org, Arnout Boer <arnout@xs4all.nl>, Matt Heckaman <matt@arpa.mail.net> Subject: Re: Why not gzip iso images? Message-ID: <200003152011.MAA15359@mina.sr.hp.com> In-Reply-To: Your message of "Wed, 15 Mar 2000 21:20:01 PST." <20000315212001.A16904@happy.checkpoint.com>
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Anatoly Vorobey <mellon@pobox.com> wrote:
> On Wed, Mar 15, 2000 at 08:14:37AM -0500, Matt Heckaman wrote:
> > It's been my experience that gzipping an ISO (or other compression tools)
> > do not make enough different to justify the time it takes to both compress
> > and uncompress these things. For example, the time needed to un-gzip the
> > ISO could be longer than the time it would take to download the space that
> > was saved by it.
>
> Alas, that is just not true for many of us who are in bandwidth-poor
> countries. Over here, it can take 3 to BIGNUM hours to download an ISO
> image (there aren't any up-to-date local mirrors), depending on time of
> day and the phase of the moon. I think compression would definitely help.
While you are right about the download/gunzip times, compression
doesn't help that much. As has been mentioned in -hackers, the ISO
images only compress by 3% or so, or around ~20MB. So, instead of a
640MB ISO image, you have a 620MB image. Is the 20MB significant?
(I don't know.)
--
Darryl Okahata
darrylo@sr.hp.com
DISCLAIMER: this message is the author's personal opinion and does not
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