Date: Wed, 09 Aug 2006 16:17:28 +0200 From: Matthias Andree <matthias.andree@gmx.de> To: freebsd-stable@freebsd.org Subject: Re: gzip is faster with -O3 Message-ID: <m3ejvqat8n.fsf@merlin.emma.line.org> In-Reply-To: <ef10de9a0608090649k78d87350v638b2d3f1432e735@mail.gmail.com> (Nikolas Britton's message of "Wed, 9 Aug 2006 08:49:47 -0500") References: <ef10de9a0608090649k78d87350v638b2d3f1432e735@mail.gmail.com>
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"Nikolas Britton" <nikolas.britton@gmail.com> writes: > dd if=/dev/random of=testfile bs=1m count=5000 1. gzip isn't usually used to compress incompressible data. 2. use "time" to figure out how much CPU time it actually burns. 5 GB are somewhat I/O bound, but gcc options don't help with that, so CPU time is better than wallclock time. > gzip compiled with -O3: > # date ; nice -10 ./gzip -c9 testfile > testfile.gz ; date > Wed Aug 9 08:01:21 CDT 2006 -- Matthias Andree
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