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Date:      Wed, 09 Aug 2006 19:17:53 +0200
From:      "[LoN]Kamikaze" <LoN_Kamikaze@gmx.de>
To:        Nikolas Britton <nikolas.britton@gmail.com>
Cc:        FreeBSD Stable List <freebsd-stable@freebsd.org>
Subject:   Re: gzip is faster with -O3
Message-ID:  <44DA18C1.9080104@gmx.de>
In-Reply-To: <ef10de9a0608090649k78d87350v638b2d3f1432e735@mail.gmail.com>
References:  <ef10de9a0608090649k78d87350v638b2d3f1432e735@mail.gmail.com>

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Nikolas Britton wrote:
> dd if=/dev/random of=testfile bs=1m count=5000
> 
> gzip compiled with -O3:
> # date ; nice -10 ./gzip -c9 testfile > testfile.gz ; date
> Wed Aug  9 08:01:21 CDT 2006
> Wed Aug  9 08:09:06 CDT 2006
> 465 Seconds.
> 
> gzip compiled with -O2:
> # date ; nice -10 ./gzip -c9 testfile > testfile.gz ; date
> Wed Aug  9 08:19:14 CDT 2006
> Wed Aug  9 08:27:06 CDT 2006
> 472 Seconds.
> 
> 7 second difference, it's not much but I still wanted to share it with
> the group.
> 
> 

You should use /bin/time for measuring.



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