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Date: Thu, 20 Mar 2003 08:10:12 -0500 (EST)
From: John Jasen <jjasen@realityfailure.org>
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To: John Bradford <john@grabjohn.com>
cc: "H. Peter Anvin" <hpa@zytor.com>, <mirrors@kernel.org>,
       <linux-kernel@vger.kernel.org>
Subject: Re: Deprecating .gz format on kernel.org
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Message-ID: <Pine.LNX.4.44.0303200744010.2365-100000@bushido>
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Among the latest 2.4-release kernels (2.4.19 and 2.4.20), it seems that 
bz2 saves ~6MB.

Downloads: 1.5MB DSL

time `ncftpget ftp://ftp.kernel.org/pub/linux/kernel/v2.4/linux-2.4.20.tar.gz`
real    3m24.004s
<snipped>

time `ncftpget ftp://ftp.kernel.org/pub/linux/kernel/v2.4/linux-2.4.20.tar.bz2`
real    2m51.481s
<snipped>

Uncompression: Dual AMD 1600+, 512MB ram, 30 GB seagate EIDE
time `gunzip linux-2.4.20.tar.gz`
real    0m5.428s
user    0m2.285s
sys     0m1.096s

time `bunzip2 linux-2.4.20.tar.bz2 `
real    0m28.892s
user    0m27.318s
sys     0m1.363s

Compression: Dual AMD 1600+, 512MB ram, 30 GB seagate EIDE
time `gzip linux-2.4.20.tar`
real    0m18.771s
user    0m17.990s
sys     0m0.674s

time `gzip -9 linux-2.4.20.tar`
real    0m42.032s
user    0m40.725s
sys     0m0.791s

time `bzip2 linux-2.4.20.tar`
real    1m50.411s
user    1m49.197s
sys     0m0.555s

bz2 is about 18% of the size of the tarfile. gz is 22%. gzip -9 saved a 
whopping 310k compared to gzip.

-- 
-- John E. Jasen (jjasen@realityfailure.org)
-- User Error #2361: Please insert coffee and try again.


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