kopia lustrzana https://github.com/friendica/friendica
Processing of high priority processes
rodzic
0b0b29dc97
commit
7580c8ed11
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@ -39,7 +39,7 @@ function poller_run(&$argv, &$argc){
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return;
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// Checking the number of workers
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if (poller_too_much_workers()) {
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if (poller_too_much_workers($entries, $queues, $maxqueues)) {
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poller_kill_stale_workers();
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return;
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}
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@ -58,13 +58,15 @@ function poller_run(&$argv, &$argc){
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sleep(4);
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// Checking number of workers
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if (poller_too_much_workers())
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if (poller_too_much_workers($entries, $queues, $maxqueues))
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return;
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$cooldown = Config::get("system", "worker_cooldown", 0);
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$starttime = time();
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$delayed = 0;
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while ($r = q("SELECT * FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `created` LIMIT 1")) {
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// Constantly check the number of parallel database processes
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@ -76,9 +78,37 @@ function poller_run(&$argv, &$argc){
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return;
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// Count active workers and compare them with a maximum value that depends on the load
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if (poller_too_much_workers())
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if (poller_too_much_workers($entries, $queues, $maxqueues))
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return;
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$argv = json_decode($r[0]["parameter"]);
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$argc = count($argv);
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$funcname = str_replace(".php", "", basename($argv[0]))."_run";
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// Define the processes that have priority over any other process
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/// @todo Better check for priority processes
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$priority = array("delivery_run", "notifier_run", "pubsubpublish_run");
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// Delay other processes if the system has a high load and there are many pending processes.
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// The "delayed" value is a safety mechanism for the case when there are no high priority processes in the queue.
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if ((($queues / $maxqueues) <= 0.5) AND (($entries > 100) AND ($delayed < 100)) AND !in_array($funcname, $priority)) {
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q("UPDATE `workerqueue` SET `created` = '%s' WHERE `id` = %d",
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dbesc(datetime_convert()),
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intval($r[0]["id"]));
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// Count the number of delayed processes
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++$delayed;
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logger("Delay call to '".$funcname."' for performance reasons (Delay ".$delayed.")", LOGGER_DEBUG);
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continue;
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}
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// If we delivered a process that has high priority we reset the delayed counter.
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// When we reached the limit we will process any entry until we reach a high priority process.
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if (in_array($funcname, $priority))
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$delayed = 0;
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q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d AND `executed` = '0000-00-00 00:00:00'",
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dbesc(datetime_convert()),
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intval(getmypid()),
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@ -93,10 +123,6 @@ function poller_run(&$argv, &$argc){
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continue;
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}
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$argv = json_decode($r[0]["parameter"]);
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$argc = count($argv);
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// Check for existance and validity of the include file
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$include = $argv[0];
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@ -108,8 +134,6 @@ function poller_run(&$argv, &$argc){
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require_once($include);
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$funcname=str_replace(".php", "", basename($argv[0]))."_run";
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if (function_exists($funcname)) {
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logger("Process ".getmypid()." - ID ".$r[0]["id"].": ".$funcname." ".$r[0]["parameter"]);
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$funcname($argv, $argc);
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@ -244,13 +268,17 @@ function poller_kill_stale_workers() {
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}
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}
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function poller_too_much_workers() {
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function poller_too_much_workers(&$entries, &$queues, &$maxqueues) {
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$entries = 0;
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$queues = get_config("system", "worker_queues");
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if ($queues == 0)
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$queues = 4;
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$maxqueues = $queues;
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$active = poller_active_workers();
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// Decrease the number of workers at higher load
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@ -268,8 +296,9 @@ function poller_too_much_workers() {
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$queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
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$s = q("SELECT COUNT(*) AS `total` FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00'");
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$entries = $s[0]["total"];
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logger("Current load: ".$load." - maximum: ".$maxsysload." - current queues: ".$active."/".$s[0]["total"]." - maximum: ".$queues, LOGGER_DEBUG);
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logger("Current load: ".$load." - maximum: ".$maxsysload." - current queues: ".$active."/".$entries." - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
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}
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