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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Byte-compiling ucs-normalize.el takes a long time
Date: Fri, 14 Aug 2009 12:59:24 +0300
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Xref: news.gmane.org gmane.emacs.devel:114236
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I tried on 2 different and fairly modern machines: a single-CPU
hyper-threaded 3GHz Windows XP box, and a GNU/Linux machine with 4
dual-core 2.2GHz CPUs.  The Windows box was otherwise idle, the
GNU/Linux machine had a load average of 1.2.  The times are:

  Windows:

    real    00h00m13.750s
    user    00h00m12.562s
    sys     00h00m00.609s

  GNU/Linux:

    real    0m19.975s
    user    0m19.740s
    sys     0m0.150s

Why does it take so long to byte-compile this file?