~drizzle-trunk/drizzle/development

#!/usr/bin/perl

############################################################################

#     Stress test for MySQL/Innobase combined database

#     (c) 2000 Innobase Oy & MySQL AB

#

############################################################################

use Cwd;

use DBI;

use Benchmark;

$opt_loop_count = 100000;

$pwd = cwd(); $pwd = "." if ($pwd eq '');

require "$pwd/bench-init.pl" || die "Can't read Configuration file: $!\n";

print "Innotest2b: MySQL/InnoDB stress test in Perl for FOREIGN keys\n";

print "------------------------------------------------------------\n";

print "This is a randomized stress test for concurrent inserts,\n";

print "updates, deletes, commits and rollbacks with foreign keys with\n";

print "the ON DELETE ... clause. The test will generate\n";

print "also a lot of deadlocks, duplicate key errors, and other SQL errors.\n";

print "\n";

print "You should run innotest2, innotest2a, and innotest2b concurrently.\n";

print "The thing to watch is that the server does not crash or does not\n";

print "print to the .err log anything. Currently, due to a buglet in MySQL,\n";

print "warnings about MySQL lock reservations can appear in the .err log.\n";

print "The test will run very long, even several hours. You can kill\n";

print "the perl processes running this test at any time and do CHECK\n";

print "TABLE on tables innotest2a, b, c, d in the 'test' database.\n";

print "\n";

print "Some of these stress tests will print a lot of SQL errors\n";

print "to the standard output. That is not to be worried about.\n";

print "You can direct the output to a file like this:\n";

print "perl innotest2 > out2\n\n";

print "Generating random keys\n";

$random[$opt_loop_count] = 0;

$rnd_str[$opt_loop_count] = "a";

for ($i = 0; $i < $opt_loop_count; $i++) {

	$random[$i] = ($i * 98641) % $opt_loop_count;

  	if (0 == ($random[$i] % 3)) {

  		$rnd_str[$i] = "khD";

	} else { if (1 == ($random[$i] % 3)) {

		$rnd_str[$i] = "khd";

	} else { if (2 == ($random[$i] % 3)) {

		$rnd_str[$i] = "kHd";

	}}}

	for ($j = 0; $j < (($i * 764877) % 10); $j++) {

		$rnd_str[$i] = $rnd_str[$i]."k";

	}	

}

####

####  Connect

####

$dbh = $server->connect();

$dbh->do("set autocommit = 0");

for ($i = 0; $i < 1; $i++) {

	print "loop $i\n";

	for ($j = 0; $j < $opt_loop_count - 10; $j = $j + 2) {

		$dbh->do(

		"insert into innotest2b (D, B, C) values (5, '".$rnd_str[$j]."' ,'".$rnd_str[$j]."')")

		|| print $dbh->errstr;

		$dbh->do(

		"insert into innotest2a (D, B, C) values (5, '".$rnd_str[$j]."' ,'".$rnd_str[$j]."')")

		|| print $dbh->errstr;

		$dbh->do(

		"insert into innotest2c (D, B, C) values (5, '".$rnd_str[$j]."' ,'".$rnd_str[$j]."')")

		|| print $dbh->errstr;

		$dbh->do("delete from innotest2b where A = ".$random[$random[$j]])

		|| print $dbh->errstr;

		$dbh->do("update innotest2b set A = A + 1 where A = ".$random[$j])

		|| print $dbh->errstr;

		if (0 == ($j % 10)) {

			$dbh->do("commit");

		}

		if (0 == ($j % 39)) {

			$dbh->do("rollback");

		}		

		if (0 == ($j % 1000)) {

			print "round $j\n";

		}

	}	

	$dbh->do("commit");

}				

$dbh->disconnect;				# close connection