<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html;CHARSET=iso-8859-1"> <meta name="Copyright" content="Copyright (c) 2002, International Business Machines Corporation and others. All Rights Reserved."> <META NAME="GENERATOR" Content="Visual Page 2.0 for Windows"> <TITLE>collperf</TITLE> </HEAD> <BODY BGCOLOR="white"> <H2>collperf</H2> <P>collperf is a test program for comparing collation performance and key lengths of ICU, Windows native collation and Unix/POSIX collation. It operates on a file of lines (names, for example), and performs one of three tests:</P> <OL> <LI>Sort Key generation. Report on key lengths and key generation times. <LI>Binary search. Report the average time required to look up each of the names (file lines) from the file in a sorted list of all of the names. <LI>Quick Sort. Report the time required to sort the file in memory, using the C library qsort function. The file order is randomized prior to the sort. </OL> <P> <P><B>Usage Summary</B></P> <BLOCKQUOTE> <P> <TABLE BORDER="0" WIDTH="100%" BGCOLOR="#FFFBF0"> <TR> <TD WIDTH="100%"> <P><TT>collperf -help</TT> <BLOCKQUOTE> <PRE><TT>Usage: strperf options... -help Display this message. -file file_name utf-16 format file of names -locale name ICU locale to use. Default is en_US -langid 0x1234 Windows Language ID number. Default 0x409 (en_US) see http://msdn.microsoft.com/library/psdk/winbase/nls_8xo3.htm -win Run test using Windows native services. (ICU is default) -unix Run test using Unix strxfrm, strcoll services. -uselen Use API with string lengths. Default is null-terminated strings -usekeys Run tests using sortkeys rather than strcoll -loop nnnn Loopcount for test. Adjust for reasonable total running time. -terse Terse numbers-only output. Intended for use by scripts. -french French accent ordering -norm Normalizing mode on -shifted Shifted mode -lower Lower case first -upper Upper case first -case Enable separate case level -level n Sort level, 1 to 5, for Primary, Secndary, Tertiary, Quaternary, Identical -binsearch Binary Search timing test -keygen Sort Key Generation timing test -qsort Quicksort timing test</TT></PRE> </BLOCKQUOTE> </TD> </TR> </TABLE> </P> </BLOCKQUOTE> <P><B>Example</B></P> <BLOCKQUOTE> <P> <TABLE BORDER="0" WIDTH="100%" BGCOLOR="#FFFBF0"> <TR> <TD WIDTH="100%"><TT>C:\>collperf -loop 200 -file latin.txt -keygen -shifted -level 4<BR> file "latin.txt", 7604 lines.<BR> Sort Key Generation: total # of keys = 197704<BR> Sort Key Generation: time per key = 4253 ns<BR> Key Length / character = 1.730054</TT></TD> </TR> </TABLE> </BLOCKQUOTE> <P> </BODY> </HTML>