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Merge pull request #2348 from annando/1602-poller-again

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Database connections: When we now check for user values and system values
This commit is contained in:
Tobias Diekershoff 2016-02-12 11:25:49 +01:00
commit 036311237f
1 changed files with 26 additions and 19 deletions
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45
include/poller.php
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@ -161,35 +161,42 @@ function poller_max_connections_reached() {
$used = count($r);
logger("Connection usage (user values): ".$used."/".$max, LOGGER_DEBUG);
} else {
// Since there are no user specific limitations we will now check for the system values
$r = q("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
if (!$r)
return false;
$max = intval($r[0]["Value"]);
if ($max == 0)
return false;
$level = $used / $max;
$r = q("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
if (!$r)
return false;
$used = intval($r[0]["Value"]);
if ($used == 0)
return false;
logger("Connection usage (system values): ".$used."/".$max, LOGGER_DEBUG);
if ($level >= (3/4)) {
logger("Maximum level (3/4) of user connections reached: ".$used."/".$max);
return true;
}
}
// We will now check for the system values.
// This limit could be reached although the user limits are fine.
$r = q("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
if (!$r)
return false;
$max = intval($r[0]["Value"]);
if ($max == 0)
return false;
$r = q("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
if (!$r)
return false;
$used = intval($r[0]["Value"]);
if ($used == 0)
return false;
logger("Connection usage (system values): ".$used."/".$max, LOGGER_DEBUG);
$level = $used / $max;
if ($level < (3/4))
return false;
logger("Maximum level (3/4) of connections reached: ".$used."/".$max);
logger("Maximum level (3/4) of system connections reached: ".$used."/".$max);
return true;
}
/**