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| <meta name="GENERATOR" content="Mozilla/4.76 [en] (X11; U; Linux 2.4.0-4GB i686) [Netscape]"> |
| <meta name="AUTHOR" content="Martin Hollmichel"> |
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| <h2> |
| Linux (x86) Performance Issues</h2> |
| |
| <h3> |
| Code size</h3> |
| In comparison to the Windows binaries it is remarkable that size of libraries |
| is bigger. Some libraries are three times bigger than their windows versions. |
| One main reason for that is that symbols are referenced by their names. |
| In Windows symbols are directly referenced (within libraries) or by ordinal |
| (external references). |
| <p>One possible solution could be the introduction of aliases for symbol |
| names. So the symbol names could be reduced to an optimal length and names |
| with up to 4K characters could be avoided. If there was made heavy use |
| of STL and namespaces very long symbols names are the result. |
| <p>There are other reasons why gcc generated libraries are pretty huge, |
| see also some <a href="filesizes.html">sizing experiments</a> we've done |
| on SRC624. |
| <h3> |
| Startup time</h3> |
| See also: <a href="http://bugzilla.mozilla.org/show_bug.cgi?id=46775">http://bugzilla.mozilla.org/show_bug.cgi?id=46775</a> |
| . |
| <h2> |
| Performance Data:</h2> |
| |
| <table BORDER CELLSPACING=3 CELLPADDING=4 WIDTH="100%" > |
| <caption><COL WIDTH=85*><COL WIDTH=85*><COL WIDTH=85*><THEAD> |
| <br></THEAD></caption> |
| |
| <tr VALIGN=TOP> |
| <th WIDTH="33%">OpenOffice.org Version</th> |
| |
| <th WIDTH="33%">Startup (first start after installation)</th> |
| |
| <th WIDTH="33%">Memory footprint after start and late init</th> |
| </tr> |
| </table> |
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| <br> |
| <table BORDER CELLSPACING=3 CELLPADDING=4 WIDTH="100%" > |
| <caption><COL WIDTH=85*><COL WIDTH=85*><COL WIDTH=28*><COL WIDTH=28*><COL WIDTH=28*><THEAD> |
| <br></THEAD><TBODY> |
| <br></TBODY></caption> |
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| <tr VALIGN=TOP> |
| <td WIDTH="33%"></td> |
| |
| <td WIDTH="33%"></td> |
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| <td WIDTH="11%">VmSize</td> |
| |
| <td WIDTH="11%">VmRss</td> |
| |
| <td WIDTH="11%">VmData</td> |
| </tr> |
| |
| <tr VALIGN=TOP> |
| <td WIDTH="33%">OpenOffice627</td> |
| |
| <td WIDTH="33%">65 sec</td> |
| |
| <td COLSPAN="3" WIDTH="33%">104768Kb/49676KB/16360kb</td> |
| </tr> |
| |
| <tr VALIGN=TOP> |
| <td WIDTH="33%"></td> |
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| <td WIDTH="33%"></td> |
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| <td COLSPAN="3" WIDTH="33%"></td> |
| </tr> |
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| <h3> |
| Other references:</h3> |
| Linking loader ld.so |
| <a href="http://www.suse.de/~bastian/Export/linking.txt">http://www.suse.de/~bastian/Export/linking.txt</a> |
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