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    1 Copyright (C) 2008, International Business Machines
    2 Corporation and others.  All Rights Reserved.
    3 
    4 README for ICU4C Performance Test
    5 
    6 Introduction:
    7 The performance tests in ICU4C compares various aspects of ICU against previous versions of ICU,
    8 Posix, and/or Windows.  Some tests only run on Windows and are labeled accordingly.All of the 
    9 performance tests are driven by a perl-based script which calls the underlying C program and 
   10 displays the statistical analysis of the test in an easy to read HTML web page.  Each test will
   11 have its own web page.
   12 
   13 
   14 Requirements:
   15 The most up to date tests are in ICU 4.0 and later. In addition, most tests depend on data which are 
   16 in a seperate repository.  
   17 
   18 Data repository:
   19 http://source.icu-project.org/repos/icu/data/trunk/test/perf
   20 There are 3 folders in here: collation, conversion, and udr.
   21 
   22 
   23 Running Performance Test:
   24 
   25 1) You should create a directory to hold the ICU (current and previous versions) and the data.
   26    (e.g. C:\ICUPerformanceTest)
   27 
   28 2) Checkout the current ICU and 2 previous versions (for proper regression testing) and the data
   29    into the ICUPerformanceTest directory.
   30 
   31 3) Do a general build on all the ICUs either through Visual Studios or with the Makefile.
   32 
   33 4) Build the ICU performance tests either through Visual Studios or with the Makefile.
   34    (The location of the performance test is: icu/source/test/perf)
   35 
   36 5) Go to perf/perldriver and edit Common.pl.
   37    In this file, you will need to set a few variables:
   38    a) ICU version numbers
   39    b) Path to the performance test data
   40    c) Path to the root directory of the different versions of ICU
   41    d) Whether or not you are running the test on Windows
   42    * The Path needs to be absolute
   43    * All other variables should be left as is
   44 
   45 6) In the perf directory, there are several other directories for the various tests that can be run.
   46    (e.g. convperf (Conversion tests)). Go to each directory and execute the perl script for each test
   47    you want to run. (e.g. CharPerf_r.pl in CharPerf directory)
   48    * You only need to run the perl script from the latest ICU version.  The corresponding perl script 
   49      in the previous versions of ICU do not need to be run seperately.
   50    * All of the test result web pages will be stored in perf/results.
   51 
   52 
   53 Note: When running on Windows, cygwin is preferred.
   54 Note: If a test needs to be run on Windows, a message will be displayed.
   55 Note: After building the performance tests, it is a good idea to execute each C program to ensure that each
   56       test can run. (e.g. convperf.exe)
   57 Note: To run the actual performance test, you will need to setup Perl with the following modules:
   58       a) Statistics/Distribution.pm
   59       b) Statistics/Descriptive.pm 
   60 Note: Some tests take a while depending on the machine it is running on so a script to run each performance test's
   61       perl script might be helpful.