icuSources/test/collperf/readme.html

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  13 <H2>collperf</H2>
  14 <P>collperf is a test program for comparing collation performance and key lengths of ICU, Windows native collation
  15 and Unix/POSIX collation. It operates on a file of lines (names, for example), and performs one of three tests:</P>
  16
  17 <OL>
  18         <LI>Sort Key generation. Report on key lengths and key generation times.
  19         <LI>Binary search. Report the average time required to look up each of the names (file lines) from the file in
  20         a sorted list of all of the names.
  21         <LI>Quick Sort. Report the time required to sort the file in memory, using the C library qsort function. The file
  22         order is randomized prior to the sort.
  23 </OL>
  24
  25 <P>
  26 <P><B>Usage Summary</B></P>
  27
  28 <BLOCKQUOTE>
  29         <P>
  30         <TABLE BORDER="0" WIDTH="100%" BGCOLOR="#FFFBF0">
  31                 <TR>
  32                         <TD WIDTH="100%">
  33                                 <P><TT>collperf -help</TT>
  34                                 <BLOCKQUOTE>
  35                                         <PRE><TT>Usage: strperf options...
  36 -help                  Display this message.
  37 -file file_name        utf-16 format file of names
  38 -locale name           ICU locale to use. Default is en_US
  39 -langid 0x1234         Windows Language ID number. Default 0x409 (en_US)
  40                        see http://msdn.microsoft.com/library/psdk/winbase/nls_8xo3.htm
  41 -win                   Run test using Windows native services. (ICU is default)
  42 -unix                  Run test using Unix strxfrm, strcoll services.
  43 -uselen                Use API with string lengths. Default is null-terminated strings
  44 -usekeys               Run tests using sortkeys rather than strcoll
  45 -loop nnnn             Loopcount for test. Adjust for reasonable total running time.
  46 -terse                 Terse numbers-only output. Intended for use by scripts.
  47 -french                French accent ordering
  48 -norm                  Normalizing mode on
  49 -shifted               Shifted mode
  50 -lower                 Lower case first
  51 -upper                 Upper case first
  52 -case                  Enable separate case level
  53 -level n               Sort level, 1 to 5, for Primary, Secndary, Tertiary, Quaternary, Identical
  54 -binsearch             Binary Search timing test
  55 -keygen                Sort Key Generation timing test
  56 -qsort                 Quicksort timing test</TT></PRE>
  57                                 </BLOCKQUOTE>
  58                         </TD>
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  61 </P>
  62 </BLOCKQUOTE>
  63
  64 <P><B>Example</B></P>
  65
  66 <BLOCKQUOTE>
  67         <P>
  68         <TABLE BORDER="0" WIDTH="100%" BGCOLOR="#FFFBF0">
  69                 <TR>
  70                         <TD WIDTH="100%"><TT>C:\&gt;collperf -loop 200 -file latin.txt -keygen -shifted -level 4<BR>
  71                                 file &quot;latin.txt&quot;, 7604 lines.<BR>
  72                                 Sort Key Generation: total # of keys = 197704<BR>
  73                                 Sort Key Generation: time per key = 4253 ns<BR>
  74                                 Key Length / character = 1.730054</TT></TD>
  75                 </TR>
  76         </TABLE>
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  78 </BLOCKQUOTE>
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