95 lines
2.7 KiB
Plaintext
95 lines
2.7 KiB
Plaintext
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#!/usr/bin/perl
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############################################################################
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# Stress test for MySQL/Innobase combined database
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# (c) 2000 Innobase Oy & MySQL AB
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#
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############################################################################
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use Cwd;
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use DBI;
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use Benchmark;
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$opt_loop_count = 100000;
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$pwd = cwd(); $pwd = "." if ($pwd eq '');
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require "$pwd/bench-init.pl" || die "Can't read Configuration file: $!\n";
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print "Innotest2a: MySQL/InnoDB stress test in Perl for FOREIGN keys\n";
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print "------------------------------------------------------------\n";
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print "This is a randomized stress test for concurrent inserts,\n";
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print "updates, deletes, commits and rollbacks with foreign keys with\n";
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print "the ON DELETE ... clause. The test will generate\n";
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print "also a lot of deadlocks, duplicate key errors, and other SQL errors.\n";
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print "\n";
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print "You should run innotest2, innotest2a, and innotest2b concurrently.\n";
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print "The thing to watch is that the server does not crash or does not\n";
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print "print to the .err log anything. Currently, due to a buglet in MySQL,\n";
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print "warnings about MySQL lock reservations can appear in the .err log.\n";
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print "The test will run very long, even several hours. You can kill\n";
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print "the perl processes running this test at any time and do CHECK\n";
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print "TABLE on tables innotest2a, b, c, d in the 'test' database.\n";
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print "\n";
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print "Some of these stress tests will print a lot of SQL errors\n";
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print "to the standard output. That is not to be worried about.\n";
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print "You can direct the output to a file like this:\n";
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print "perl innotest2 > out2\n\n";
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print "Generating random keys\n";
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$random[$opt_loop_count] = 0;
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$rnd_str[$opt_loop_count] = "a";
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for ($i = 0; $i < $opt_loop_count; $i++) {
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$random[$i] = ($i * 63857) % $opt_loop_count;
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if (0 == ($random[$i] % 3)) {
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$rnd_str[$i] = "khD";
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} else { if (1 == ($random[$i] % 3)) {
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$rnd_str[$i] = "kHd";
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} else { if (2 == ($random[$i] % 3)) {
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$rnd_str[$i] = "khd";
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}}}
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for ($j = 0; $j < (($i * 764877) % 20); $j++) {
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$rnd_str[$i] = $rnd_str[$i]."k";
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}
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}
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####
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#### Connect
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####
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$dbh = $server->connect()
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|| die $dbh->errstr;
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$dbh->do("set autocommit = 0");
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for ($i = 0; $i < 5; $i++) {
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print "loop $i\n";
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for ($j = 0; $j < $opt_loop_count - 10; $j = $j + 1) {
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$dbh->do("update innotest2a set B = '".$rnd_str[$j + 1]."' where A = ".$random[$j + 5])
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|| print $dbh->errstr;
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$dbh->do("delete from innotest2a where A = ".$random[$random[$j]])
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|| print $dbh->errstr;
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if (0 == ($j % 10)) {
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$dbh->do("commit");
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}
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if (0 == ($j % 39)) {
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$dbh->do("rollback");
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}
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if (0 == ($j % 1000)) {
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print "round $j\n";
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}
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}
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$dbh->do("commit");
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}
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$dbh->disconnect; # close connection
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