99 lines
2.1 KiB
HTML
99 lines
2.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<HEAD>
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<META http-equiv="Content-Type" content="text/html; charset=Windows-1252">
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<TITLE>Performance</TITLE>
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<LINK href="style.css" rel="stylesheet" type="text/css">
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</HEAD>
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<BODY>
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<H1>Performance</H1>
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<H4>ZIP Format</H4>
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<P>Compression ratio results are very dependent upon the data used for
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the tests. We compared 7-Zip with some of the leading
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commercial archivers: PKZIP 2.04g, WinZip 7.0.</P>
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<P>FILE SET: The Canterbury Corpus (11 files totaling 2,810,784 bytes,
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popular file set used to compression rates).</P>
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<TABLE>
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<TR>
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<TH>Archiver</TH>
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<TH>Compressed size</TH>
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<TH>Ratio</TH>
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</TR>
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<TR>
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<TD><B>7-Zip (zip format)</B></TD>
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<TD><B>676284</B></TD>
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<TD><B>100%</B></TD>
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</TR>
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<TR>
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<TD>PKZIP 2.04g -ex</TD>
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<TD>726047</TD>
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<TD>107%</TD>
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</TR>
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<TR>
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<TD>WinZip 7.0 (Max)</TD>
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<TD>731499</TD>
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<TD>108%</TD>
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</TR>
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</TABLE>
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<H4>7z Format</H4>
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<P>7z is the new archive format, providing a high compression ratio.</P>
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<P>FILE SET: The GIMP 1.2.4 for Windows after full installation
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(127 subfolders, 1304 files totaling 27,128,826 bytes).
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The GIMP is the GNU Image Manipulation Program. It can be downloaded from
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www.gimp.org.</P>
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<TABLE>
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<TR>
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<TH>Archiver</TH>
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<TH>Compressed size</TH>
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<TH>Ratio</TH>
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</TR>
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<TR>
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<TD><B>7-Zip (7z format)</B></TD>
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<TD><B>5445402</B></TD>
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<TD><B>100%</B></TD>
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</TR>
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<TR>
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<TD>WinRAR 3.10</TD>
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<TD>6004155</TD>
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<TD>110%</TD>
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</TR>
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<TR>
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<TD>WinAce 2.3</TD>
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<TD>6242424</TD>
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<TD>115%</TD>
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</TR>
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<TR>
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<TD>CABARC 1.0</TD>
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<TD>6455327</TD>
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<TD>119%</TD>
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</TR>
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<TR>
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<TD><B>7-Zip (zip format)</B></TD>
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<TD><B>9461621</B></TD>
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<TD><B>174%</B></TD>
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</TR>
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<TR>
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<TD>PKZIP 2.50</TD>
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<TD>9842800</TD>
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<TD>181%</TD>
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</TR>
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</TABLE>
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<H4>GZIP Format</H4>
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<P>7-Zip provides the best compression ratio for GZIP format. The compression ratio
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is equal to its compression ratio for ZIP format (above).</P>
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</BODY>
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</HTML>
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