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loadtest.pl
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loadtest.pl
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#!/usr/bin/env perl
use strict;
my $ARGLEN = 5; # max length of one arg
my $CMDLEN = 5; # nr of args in 1 cmd
my $DB = '/tmp/loadtest.db'; # db to use
my $NCMDS = 180000000; # nr of cmds to generate: 1 per second,
# for 8 hrs a day, 5 days a week,
# 25 weeks per year, for 50 years
sub genstr($) {
my $count = shift;
my $ret;
for (1..$count) {
$ret .= chr(int(rand(25) + 97));
}
return $ret;
}
sub gencmd($) {
my $maxlen = shift;
my $ret;
# First one is a three letter thing.
$ret = genstr(3);
for my $count (1..rand($maxlen)) {
$ret .= " " . genstr($ARGLEN);
}
return $ret;
}
sub dbsize() {
my @statres = stat($DB) or return 0;
return $statres[7];
}
sub progress($$$$$) {
printf("Added %8d commands with total length %10d, dbsize %10d in %4d sec, step %d\n", @_);
}
# main
my $totlen = 0;
if ($#ARGV == 0) {
$totlen = int($ARGV[0]);
} else {
unlink($DB);
}
my $prevtime = time();
my $starttime = $prevtime;
for my $i (1..$NCMDS) {
my $cmd = gencmd($CMDLEN);
system("/tmp/his -d$DB -F3 -a '$i $cmd'") and die("his failed");
$totlen += length($cmd);
if ($i % 100 == 0) {
progress($i, $totlen, dbsize(), time() - $starttime, time() - $prevtime);
$prevtime = time();
}
}
# At the end
progress($NCMDS, $totlen, dbsize(), time() - $starttime, time() - $prevtime);