#!/usr/local/bin/perl # ******************************************************************************* # * Copyright (C) 2002-2007 International Business Machines Corporation and * # * others. All Rights Reserved. * # ******************************************************************************* use strict; # Assume we are running within the icu4j root directory use lib 'src/com/ibm/icu/dev/test/perf'; use Dataset; #--------------------------------------------------------------------- # Test class my $TESTCLASS = 'com.ibm.icu.dev.test.perf.UCharacterPerf'; # Methods to be tested. Each pair represents a test method and # a baseline method which is used for comparison. my @METHODS = (['JDKDigit', 'Digit'], ['JDKGetNumericValue', 'GetNumericValue'], ['JDKGetType', 'GetType'], ['JDKIsDefined', 'IsDefined'], ['JDKIsDigit', 'IsDigit'], ['JDKIsIdentifierIgnorable', 'IsIdentifierIgnorable'], ['JDKIsISOControl', 'IsISOControl'], ['JDKIsLetter', 'IsLetter'], ['JDKIsLetterOrDigit', 'IsLetterOrDigit'], ['JDKIsLowerCase', 'IsLowerCase'], ['JDKIsSpaceChar', 'IsSpaceChar'], ['JDKIsTitleCase', 'IsTitleCase'], ['JDKIsUnicodeIdentifierPart', 'IsUnicodeIdentifierPart'], ['JDKIsUnicodeIdentifierStart', 'IsUnicodeIdentifierStart'], ['JDKIsUpperCase', 'IsUpperCase'], ['JDKIsWhiteSpace', 'IsWhiteSpace'], ); # Patterns which define the set of characters used for testing. my @PATTERNS = ('0 ffff'); my $CALIBRATE = 2; # duration in seconds for initial calibration my $DURATION = 10; # duration in seconds for each pass my $NUMPASSES = 4; # number of passes. If > 1 then the first pass # is discarded as a JIT warm-up pass. my $TABLEATTR = 'BORDER="1" CELLPADDING="4" CELLSPACING="0"'; my $PLUS_MINUS = "±"; if ($NUMPASSES < 3) { die "Need at least 3 passes. One is discarded (JIT warmup) and need two to have 1 degree of freedom (t distribution)."; } my $OUT; # see out() main(); #--------------------------------------------------------------------- # ... sub main { my $date = localtime; my $title = "ICU4J Performance Test $date"; my $html = $date; $html =~ s/://g; # ':' illegal $html =~ s/\s*\d+$//; # delete year $html =~ s/^\w+\s*//; # delete dow $html = "perf $html.html"; open(HTML,">$html") or die "Can't write to $html: $!"; print HTML < $title EOF print HTML "

$title

\n"; print HTML "

$TESTCLASS

\n"; my $raw = ""; for my $methodPair (@METHODS) { my $testMethod = $methodPair->[0]; my $baselineMethod = $methodPair->[1]; print HTML "

\n"; } print HTML "
\n"; print HTML "
$testMethod vs. $baselineMethod
\n"; print HTML "
\n"; print HTML ""; print HTML "\n"; $OUT = ''; for my $pat (@PATTERNS) { print HTML "\n"; out("
Pattern $testMethod $baselineMethod Ratio
$pat
"); # measure the test method out(""); print HTML "\n"; # measure baseline method out(""); print HTML "\n"; out("
"); print "\n$testMethod $pat\n"; my $t = measure2($testMethod, $pat, -$DURATION); out("
", formatSeconds(4, $t->getMean(), $t->getError); print HTML "/event
"); print "\nBegin $baselineMethod $pat\n"; my $b = measure2($baselineMethod, $pat, -$DURATION); out("
", formatSeconds(4, $b->getMean(), $t->getError); print HTML "/event
"); # output ratio my $r = $t->divide($b); my $mean = $r->getMean() - 1; my $color = $mean < 0 ? "RED" : "BLACK"; print HTML " ", formatPercent(3, $mean, $r->getError); print HTML "

\n"; print HTML "

Raw data:

\n"; print HTML $OUT; print HTML "

\n"; } print HTML < EOF close(HTML) or die "Can't close $html: $!"; } #--------------------------------------------------------------------- # Append text to the global variable $OUT sub out { $OUT .= join('', @_); } #--------------------------------------------------------------------- # Append text to the global variable $OUT sub outln { $OUT .= join('', @_) . "\n"; } #--------------------------------------------------------------------- # Measure a given test method with a give test pattern using the # global run parameters. # # @param the method to run # @param the pattern defining characters to test # @param if >0 then the number of iterations per pass. If <0 then # (negative of) the number of seconds per pass. # # @return a Dataset object, scaled by iterations per pass and # events per iteration, to give time per event # sub measure2 { my @data = measure1(@_); my $iterPerPass = shift(@data); my $eventPerIter = shift(@data); shift(@data) if (@data > 1); # discard first run my $ds = Dataset->new(@data); $ds->setScale(1.0e-3 / ($iterPerPass * $eventPerIter)); $ds; } #--------------------------------------------------------------------- # Measure a given test method with a give test pattern using the # global run parameters. # # @param the method to run # @param the pattern defining characters to test # @param if >0 then the number of iterations per pass. If <0 then # (negative of) the number of seconds per pass. # # @return array of: # [0] iterations per pass # [1] events per iteration # [2..] ms reported for each pass, in order # sub measure1 { my $method = shift; my $pat = shift; my $iterCount = shift; # actually might be -seconds/pass out("

Measuring $method using $pat, "); if ($iterCount > 0) { out("$iterCount iterations/pass, $NUMPASSES passes

\n"); } else { out(-$iterCount, " seconds/pass, $NUMPASSES passes

\n"); } # is $iterCount actually -seconds/pass? if ($iterCount < 0) { # calibrate: estimate ms/iteration print "Calibrating..."; my @t = callJava($method, $pat, -$CALIBRATE, 1); print "done.\n"; my @data = split(/\s+/, $t[0]->[2]); $data[0] *= 1.0e+3; my $timePerIter = 1.0e-3 * $data[0] / $data[1]; # determine iterations/pass $iterCount = int(-$iterCount / $timePerIter + 0.5); out("

Calibration pass ($CALIBRATE sec): "); out("$data[0] ms, "); out("$data[1] iterations = "); out(formatSeconds(4, $timePerIter), "/iteration
\n"); } # run passes print "Measuring $iterCount iterations x $NUMPASSES passes..."; my @t = callJava($method, $pat, $iterCount, $NUMPASSES); print "done.\n"; my @ms = (); my @b; # scratch for my $a (@t) { # $a->[0]: method name, corresponds to $method # $a->[1]: 'begin' data, == $iterCount # $a->[2]: 'end' data, of the form # $a->[3...]: gc messages from JVM during pass @b = split(/\s+/, $a->[2]); push(@ms, $b[0] * 1.0e+3); } my $eventsPerIter = $b[2]; out("Iterations per pass: $iterCount
\n"); out("Events per iteration: $eventsPerIter
\n"); my @ms_str = @ms; $ms_str[0] .= " (discarded)" if (@ms_str > 1); out("Raw times (ms/pass): ", join(", ", @ms_str), "
\n"); ($iterCount, $eventsPerIter, @ms); } #--------------------------------------------------------------------- # Invoke java to run $TESTCLASS, passing it the given parameters. # # @param the method to run # @param the number of iterations, or if negative, the duration # in seconds. If more than on pass is desired, pass in # a string, e.g., "100 100 100". # @param the pattern defining characters to test, values in hex digits without 0x # # @return an array of results. Each result is an array REF # describing one pass. The array REF contains: # ->[0]: The method name as reported # ->[1]: The params on the '= begin ...' line # ->[2]: The params on the '= end ...' line # ->[3..]: GC messages from the JVM, if any # sub callJava { my $method = shift; my $pat = shift; my $n = shift; my $passes = shift; my $n = ($n < 0) ? "-t ".(-$n) : "-i ".$n; my $cmd = "java -cp classes $TESTCLASS $method $n -p $passes $pat"; print "[$cmd]\n"; # for debugging open(PIPE, "$cmd|") or die "Can't run \"$cmd\""; my @out; while () { push(@out, $_); } close(PIPE) or die "Java failed: \"$cmd\""; @out = grep(!/^\#/, @out); # filter out comments #print "[", join("\n", @out), "]\n"; my @results; my $method = ''; my $data = []; foreach (@out) { next unless (/\S/); if (/^=\s*(\w+)\s*(\w+)\s*(.*)/) { my ($m, $state, $d) = ($1, $2, $3); #print "$_ => [[$m $state $data]]\n"; if ($state eq 'begin') { die "$method was begun but not finished" if ($method); $method = $m; push(@$data, $d); push(@$data, ''); # placeholder for end data } elsif ($state eq 'end') { if ($m ne $method) { die "$method end does not match: $_"; } $data->[1] = $d; # insert end data at [1] #print "#$method:", join(";",@$data), "\n"; unshift(@$data, $method); # add method to start push(@results, $data); $method = ''; $data = []; } else { die "Can't parse: $_"; } } elsif (/^\[/) { if ($method) { push(@$data, $_); } else { # ignore extraneous GC notices } } else { die "Can't parse: $_"; } } die "$method was begun but not finished" if ($method); @results; } #|#--------------------------------------------------------------------- #|# Format a confidence interval, as given by a Dataset. Output is as #|# as follows: #|# 241.23 - 241.98 => 241.5 +/- 0.3 #|# 241.2 - 243.8 => 242 +/- 1 #|# 211.0 - 241.0 => 226 +/- 15 or? 230 +/- 20 #|# 220.3 - 234.3 => 227 +/- 7 #|# 220.3 - 300.3 => 260 +/- 40 #|# 220.3 - 1000 => 610 +/- 390 or? 600 +/- 400 #|# 0.022 - 0.024 => 0.023 +/- 0.001 #|# 0.022 - 0.032 => 0.027 +/- 0.005 #|# 0.022 - 1.000 => 0.5 +/- 0.5 #|# In other words, take one significant digit of the error value and #|# display the mean to the same precision. #|sub formatDataset { #| my $ds = shift; #| my $lower = $ds->getMean() - $ds->getError(); #| my $upper = $ds->getMean() + $ds->getError(); #| my $scale = 0; #| # Find how many initial digits are the same #| while ($lower < 1 || #| int($lower) == int($upper)) { #| $lower *= 10; #| $upper *= 10; #| $scale++; #| } #| while ($lower >= 10 && #| int($lower) == int($upper)) { #| $lower /= 10; #| $upper /= 10; #| $scale--; #| } #|} #--------------------------------------------------------------------- # Format a number, optionally with a +/- delta, to n significant # digits. # # @param significant digit, a value >= 1 # @param multiplier # @param time in seconds to be formatted # @optional delta in seconds # # @return string of the form "23" or "23 +/- 10". # sub formatNumber { my $sigdig = shift; my $mult = shift; my $a = shift; my $delta = shift; # may be undef my $result = formatSigDig($sigdig, $a*$mult); if (defined($delta)) { my $d = formatSigDig($sigdig, $delta*$mult); # restrict PRECISION of delta to that of main number if ($result =~ /\.(\d+)/) { # TODO make this work for values with all significant # digits to the left of the decimal, e.g., 1234000. # TODO the other thing wrong with this is that it # isn't rounding the $delta properly. Have to put # this logic into formatSigDig(). my $x = length($1); $d =~ s/\.(\d{$x})\d+/.$1/; } $result .= " $PLUS_MINUS " . $d; } $result; } #--------------------------------------------------------------------- # Format a time, optionally with a +/- delta, to n significant # digits. # # @param significant digit, a value >= 1 # @param time in seconds to be formatted # @optional delta in seconds # # @return string of the form "23 ms" or "23 +/- 10 ms". # sub formatSeconds { my $sigdig = shift; my $a = shift; my $delta = shift; # may be undef my @MULT = (1 , 1e3, 1e6, 1e9); my @SUFF = ('s' , 'ms', 'us', 'ns'); # Determine our scale my $i = 0; ++$i while ($a*$MULT[$i] < 1 && $i < @MULT); formatNumber($sigdig, $MULT[$i], $a, $delta) . ' ' . $SUFF[$i]; } #--------------------------------------------------------------------- # Format a percentage, optionally with a +/- delta, to n significant # digits. # # @param significant digit, a value >= 1 # @param value to be formatted, as a fraction, e.g. 0.5 for 50% # @optional delta, as a fraction # # @return string of the form "23 %" or "23 +/- 10 %". # sub formatPercent { my $sigdig = shift; my $a = shift; my $delta = shift; # may be undef formatNumber($sigdig, 100, $a, $delta) . ' %'; } #--------------------------------------------------------------------- # Format a number to n significant digits without using exponential # notation. # # @param significant digit, a value >= 1 # @param number to be formatted # # @return string of the form "1234" "12.34" or "0.001234". If # number was negative, prefixed by '-'. # sub formatSigDig { my $n = shift() - 1; my $a = shift; local $_ = sprintf("%.${n}e", $a); my $sign = (s/^-//) ? '-' : ''; my $a_e; my $result; if (/^(\d)\.(\d+)e([-+]\d+)$/) { my ($d, $dn, $e) = ($1, $2, $3); $a_e = $e; $d .= $dn; $e++; $d .= '0' while ($e > length($d)); while ($e < 1) { $e++; $d = '0' . $d; } if ($e == length($d)) { $result = $sign . $d; } else { $result = $sign . substr($d, 0, $e) . '.' . substr($d, $e); } } else { die "Can't parse $_"; } $result; } #eof