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Load depending number of worker queues.

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This commit is contained in:
Michael Vogel 2015-09-28 07:54:28 +02:00
parent ae21c40f21
commit 9767801be4
1 changed files with 21 additions and 27 deletions
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46
include/poller.php
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@ -26,10 +26,11 @@ function poller_run(&$argv, &$argc){
unset($db_host, $db_user, $db_pass, $db_data);
};
if(function_exists('sys_getloadavg')) {
$maxsysload = intval(get_config('system','maxloadavg'));
if($maxsysload < 1)
$maxsysload = 50;
if(function_exists('sys_getloadavg')) {
$load = sys_getloadavg();
if(intval($load[0]) > $maxsysload) {
logger('system: load ' . $load[0] . ' too high. poller deferred to next scheduled run.');
@ -63,18 +64,11 @@ function poller_run(&$argv, &$argc){
while ($r = q("SELECT * FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `created` LIMIT 1")) {
if(function_exists('sys_getloadavg')) {
$load = sys_getloadavg();
if(intval($load[0]) > $maxsysload) {
logger('system: load ' . $load[0] . ' too high. poller deferred to next scheduled run.');
return;
}
}
// Quit the poller once every hour
if (time() > ($starttime + 3600))
return;
// Count active workers and compare them with a maximum value that depends on the load
if (poller_too_much_workers())
return;
@ -115,28 +109,28 @@ function poller_run(&$argv, &$argc){
function poller_too_much_workers() {
if(function_exists('sys_getloadavg')) {
$load = sys_getloadavg();
// To-Do
if ($load < 1)
$queues = 10;
elseif ($load < 5)
$queues = 4;
elseif ($load < 10)
$queues = 2;
else
$queues = 1;
} else {
$queues = intval(get_config("system", "worker_queues"));
$queues = get_config("system", "worker_queues");
if ($queues == 0)
$queues = 4;
$active = poller_active_workers();
// Decrease the number of workers at higher load
if(function_exists('sys_getloadavg')) {
$load = max(sys_getloadavg());
$maxsysload = intval(get_config('system','maxloadavg'));
if($maxsysload < 1)
$maxsysload = 50;
$queues = max(0, ceil($queues * (($maxsysload - $load) / $maxsysload)));
logger("Current load: ".$load." - maximum: ".$maxsysload." - current queues: ".$active." - maximum: ".$queues, LOGGER_DEBUG);
}
if (poller_active_workers() >= $queues)
return;
return($active >= $queues);
}
function poller_active_workers() {