[gs-bugs] [Bug 690352] GS 8.63 seems to consume more CPU compared to GS8.54

bugs.ghostscript.com-bugzilla-daemon at ghostscript.com bugs.ghostscript.com-bugzilla-daemon at ghostscript.com
Sat Jul 18 21:13:20 PDT 2009


------- Additional Comments From ray.johnston at artifex.com  2009-07-18 21:13 -------
All of our code versions (back to version 6.00) are on our subversion
based server. With an svn client program on a unix or linux platform
there is a script we use to track down which changes caused bugs
in toolbin/search-svn-revs. This tool is what Marcos, myself and a
few others have used in the past and the documentation (such as it
is) in in the script.

Part of the challenge you will face is writing a 'test' script to
let the script decide on 'pass'/'fail' since there will be timing
differences in versions that are minor, so you need set benchmark
'pass' times and possibly run it several times to see which patches
contribute to what performance changes.

I suppose you could also check out, compile and test EVERY version
since 8.64 and record the test times. Just for your information,
the svn revisions corresponding to release versions are:

  release    rev
    8.54    6789
    8.63    8909
    8.64    9434

As you can see from the www.ghostscript.com website, the svn repository
can be accessed with:

    svn co http://svn.ghostscript.com/ghostscript/trunk/gs

or, for a specific revision, e.g. 6789:

    svn co -r6789 http://svn.ghostscript.com/ghostscript/trunk/gs 

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