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<p class=MsoNormal>I decided to benchmark some compression algorithms on our
actual data. Results are attached.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Summary:<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]>LZO is the fastest.<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]>7-zip (p7zip) produces the best compression
ratio. (Overall, it's the most impressive.) Doesn't seem possible
to use it as an in-line filter.<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]>gzip --fast is the most widely available.
Its speed is same order of magnitude with LZO, and its compression is same
order of magnitude as 7-zip, but it's unquestionably beat by those others, in
their natural habitat. So for general purpose, gzip --fast is the most
likely to be used in general.<o:p></o:p></p>
<p class=MsoListParagraph style='margin-left:.25in;text-indent:-.25in;
mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]>bzip2 is soundly destroyed by 7-zip, if only
7-zip is made available as an in-line filter. Presently, in-line
filtering is the only reason to ever use bzip2 instead of 7-zip.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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