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m1rc3/norruption/2/plot-corr: make scatter plot of time between corruptions

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With simulation (-s). Also updated the Makefile and renamed the previous
"corr"(uption) to "dump", to free it for "correlation".
This commit is contained in:
Werner Almesberger 2011-10-12 07:33:10 -03:00
parent 13479e1862
commit bb2589386f
2 changed files with 80 additions and 2 deletions
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7
m1rc3/norruption/2/Makefile
View File

@ -1,12 +1,12 @@
DIR=d
.SILENT:
.PHONY: all list plot corr coll
.PHONY: all list plot corr dump coll
all:
$(MAKE) plot
echo
$(MAKE) corr
$(MAKE) dump
echo
$(MAKE) coll
echo
@ -18,6 +18,9 @@ plot:
./plot-cdf $(DIR)/log && display out.png &
corr:
./plot-corr $(DIR)/log && display out.png &
dump:
./bscmp $(DIR)/*-corrupt.bin
coll:

75
m1rc3/norruption/2/plot-corr Executable file
View File

@ -0,0 +1,75 @@
#!/usr/bin/perl
sub usage
{
print STDERR "usage: $0 [-s] [log_file]\n";
exit(1);
}
if ($ARGV[0] eq "-s") {
shift @ARGV;
$sim = 1;
}
&usage if $ARGV[0] =~ /^-/;
$n = 1;
while (<>) {
next unless /^=== (\d+) ===/;
while ($1 != $n) {
push(@f, $n);
$n++;
}
$n++;
}
$n--;
$t = int($n/@f+0.5);
$last = 0;
for (@f) {
push(@d, $_-$last);
$last = $_;
}
if ($sim) {
# y = 1-exp(-x/T)
# 1-y = exp(-x/T)
# ln(1-y) = -x/T
# -T*ln(1-y) = x
$type = " (SIMULATED)";
@d = ();
for ($i = 0; $i != @f; $i++) {
push(@d, -$t*log(1-rand));
}
}
for (@d) {
$max = $_ if $_ > $max;
}
$cmd = "|gnuplot -e '".
'set term postscript color eps enhanced solid lw 2 20;'.
'set output "out.eps";'.
'set xrange [0:'.$max*1.05.'];'.
'set yrange [0:'.$max*1.05.'];'.
'set title "Correlation of time to adjacent corruptions'.$type.'";'.
'set xlabel "Cycles since previous event";'.
'set ylabel "Cycles until next event";'.
'plot "-" with points pt 7 notitle'.
"'";
open(PIPE, $cmd) || die "open: $!";
undef $last;
for (@d) {
print PIPE "$last $_\n" if defined $last;
$last = $_;
}
close(PIPE) || die "close: $!";
system("cat out.eps | ".
"gs -sDEVICE=ppmraw -r100 -sOutputFile=- ".
"-dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sPAPERSIZE=a4 -q - | ".
"convert -trim - out.png");
unlink("out.eps");