3 @chdir(dirname(__FILE__).'/../');
4 require_once('mitsql.cfg.php');
5 require_once('mitsql.lib.php');
6 define('MAX_PROC_TIME', 10);
8 $baddbs = $badusers = $bad = array();
9 $result = mysql_query('SHOW FULL PROCESSLIST');
10 while ($row = mysql_fetch_assoc($result)){
11 if ($row['Time']>MAX_PROC_TIME && $row['Command']!='Sleep') {
13 $baddbs[] = $row['db'];
14 $badusers[] = $row['User'];
17 mysql_free_result($result);
19 foreach($bad as $badproc) {
20 $mailtos = $mailnames = array();
21 $baddb = mysql_escape_string($badproc['db']);
22 $badtime = $badproc['Time'];
23 $badquery = $badproc['Info'];
24 mysql_query('KILL '.$badproc['Id']);
25 if (empty($baddb)) continue;
26 $sql = "SELECT User.UserId,User.Name,User.Email
30 WHERE DB.Name = '$baddb'";
31 $r = fetchRows(DBSelect($sql),'UserId');
32 foreach($r as $addy) {
33 $mailtos[] = $addy['Email'];
34 $mailnames[] = $addy['Name'];
36 $mailto = implode(', ',$mailtos);
37 $mailname = implode(', ',$mailnames);
38 $mailsubj = "[sql] Slow Query on $baddb";
39 $mailbody = "Dear $mailname:
41 A slow query was found on your database: $baddb
42 It took $badtime seconds and has been aborted.
44 We do not allow inefficient SQL queries to run this long to conserve server
45 resources. Your query has been appended to this message for your records.
46 Please optimize your queries to avoid having your query killed in the
47 future. If you have any questions, please contact sql@mit.edu.
49 The SQL Service is available at http://sql.mit.edu/
51 ---------------------------------------------------------------------------
55 $mailto = 'jwp@mit.edu';
56 mail($mailto,$mailsubj,$mailbody,"From: SQL Service <sql@mit.edu>\r\nBcc: sql@mit.edu\r\n");