4 require_once('mitsql.cfg.php');
5 require_once('mitsql.lib.php');
6 define('MAX_PROC_TIME', 10);
10 $baddbs = $badusers = $bad = array();
11 $result = mysql_query('SHOW FULL PROCESSLIST');
12 while ($row = mysql_fetch_assoc($result)){
13 if ($row['Time']>MAX_PROC_TIME && $row['Command']!='Sleep') {
15 $baddbs[] = $row['db'];
16 $badusers[] = $row['User'];
19 mysql_free_result($result);
21 foreach($bad as $badproc) {
22 $mailtos = $mailnames = array();
23 $baddb = mysql_escape_string($badproc['db']);
24 $badtime = $badproc['Time'];
25 $badquery = $badproc['Info'];
26 mysql_query('KILL '.$badproc['Id']);
27 if (empty($baddb)) continue;
28 $sql = "SELECT User.UserId,User.Name,User.Email
32 WHERE DB.Name = '$baddb'";
33 $r = fetchRows(DBSelect($sql),'UserId');
34 foreach($r as $addy) {
35 $mailtos[] = $addy['Email'];
36 $mailnames[] = $addy['Name'];
38 $mailto = implode(', ',$mailtos);
39 $mailname = implode(', ',$mailnames);
40 $mailsubj = "[sql] Slow Query on $baddb";
41 $mailbody = "Dear $mailname:
43 A slow query was found on your database: $baddb
44 It took $badtime seconds and has been aborted.
46 We do not allow inefficient SQL queries to run this long to conserve server
47 resources. Your query has been appended to this message for your records.
48 Please optimize your queries to avoid having your query killed in the
49 future. If you have any questions, please contact sql@mit.edu.
51 The SQL Service is available at http://sql.mit.edu/
53 ---------------------------------------------------------------------------
57 $mailto = 'jwp@mit.edu';
58 mail($mailto,$mailsubj,$mailbody,"From: SQL Service <sql@mit.edu>\r\nBcc: sql@mit.edu\r\n");