Date: Wed, 11 Oct 2006 15:32:50 +0200 From: Joerg Sonnenberger <joerg@britannica.bec.de> To: freebsd-hackers@freebsd.org Subject: Re: "tar -c|gzip" faster than "tar -cz"?!? Message-ID: <20061011133250.GA483@britannica.bec.de> In-Reply-To: <200610110934.k9B9YASW081294@lurza.secnetix.de> References: <17707.64434.913943.549852@bhuda.mired.org> <200610110934.k9B9YASW081294@lurza.secnetix.de>
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On Wed, Oct 11, 2006 at 11:34:10AM +0200, Oliver Fromme wrote: > If gzip uses its own code instead of libz, that would > explain the results of my test, of course. So it seems > that gzip is 30% faster than libz ... quite significant, > I think. No, it isn't. I did benchmarks before importing the NetBSD version into DragonFly two years ago and gzip was *always* slower. zlib 1.2 added quite a number of performance improvements as well, so it shouldn't be the problem. I have no idea why it is that slow on FreeBSD -- I don't think the slightly older version we have in DragonFly 1.6 is the origin. The programs I run were from memory as well. Joerg
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