mirror of
git://projects.qi-hardware.com/wernermisc.git
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bb2589386f
With simulation (-s). Also updated the Makefile and renamed the previous "corr"(uption) to "dump", to free it for "correlation".
76 lines
1.3 KiB
Perl
Executable File
76 lines
1.3 KiB
Perl
Executable File
#!/usr/bin/perl
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sub usage
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{
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print STDERR "usage: $0 [-s] [log_file]\n";
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exit(1);
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}
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if ($ARGV[0] eq "-s") {
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shift @ARGV;
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$sim = 1;
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}
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&usage if $ARGV[0] =~ /^-/;
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$n = 1;
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while (<>) {
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next unless /^=== (\d+) ===/;
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while ($1 != $n) {
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push(@f, $n);
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$n++;
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}
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$n++;
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}
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$n--;
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$t = int($n/@f+0.5);
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$last = 0;
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for (@f) {
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push(@d, $_-$last);
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$last = $_;
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}
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if ($sim) {
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# y = 1-exp(-x/T)
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# 1-y = exp(-x/T)
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# ln(1-y) = -x/T
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# -T*ln(1-y) = x
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$type = " (SIMULATED)";
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@d = ();
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for ($i = 0; $i != @f; $i++) {
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push(@d, -$t*log(1-rand));
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}
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}
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for (@d) {
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$max = $_ if $_ > $max;
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}
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$cmd = "|gnuplot -e '".
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'set term postscript color eps enhanced solid lw 2 20;'.
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'set output "out.eps";'.
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'set xrange [0:'.$max*1.05.'];'.
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'set yrange [0:'.$max*1.05.'];'.
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'set title "Correlation of time to adjacent corruptions'.$type.'";'.
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'set xlabel "Cycles since previous event";'.
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'set ylabel "Cycles until next event";'.
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'plot "-" with points pt 7 notitle'.
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"'";
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open(PIPE, $cmd) || die "open: $!";
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undef $last;
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for (@d) {
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print PIPE "$last $_\n" if defined $last;
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$last = $_;
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}
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close(PIPE) || die "close: $!";
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system("cat out.eps | ".
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"gs -sDEVICE=ppmraw -r100 -sOutputFile=- ".
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"-dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sPAPERSIZE=a4 -q - | ".
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"convert -trim - out.png");
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unlink("out.eps");
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