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Merge pull request #6831 from annando/worker-fetch-once

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Refetch new jobs only once per execution loop
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Tobias Diekershoff 2019-03-08 22:32:13 +01:00 committed by GitHub
commit 75d144aee7
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1 changed files with 24 additions and 21 deletions
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45
src/Core/Worker.php
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@ -23,9 +23,9 @@ use Friendica\Util\Network;
class Worker
{
const STATE_STARTUP = 1; // Worker is in startup. This takes most time.
const STATE_SHORT_LOOP = 2; // Worker is processing preassigned jobs, thus saving much time.
const STATE_LONG_LOOP = 2; // Worker is processing the whole - long - loop.
const STATE_REFETCH = 3; // Worker had refetched jobs in the execution loop.
const STATE_LONG_LOOP = 4; // Worker is processing the whole - long - loop.
const STATE_SHORT_LOOP = 4; // Worker is processing preassigned jobs, thus saving much time.
private static $up_start;
private static $db_duration = 0;
@ -102,6 +102,7 @@ class Worker
// We fetch the next queue entry that is about to be executed
while ($r = self::workerProcess()) {
$refetched = false;
foreach ($r as $entry) {
// Assure that the priority is an integer value
$entry['priority'] = (int)$entry['priority'];
@ -112,34 +113,37 @@ class Worker
return;
}
// If possible we will fetch new jobs for this worker
if (!self::getWaitingJobForPID() && Lock::acquire('worker_process', 0)) {
// Trying to fetch new processes - but only once when successful
if (!$refetched && Lock::acquire('worker_process', 0)) {
self::findWorkerProcesses();
Lock::release('worker_process');
self::$state = self::STATE_REFETCH;
$refetched = true;
} else {
self::$state = self::STATE_SHORT_LOOP;
}
}
if (self::$state != self::STATE_REFETCH) {
self::$state = self::STATE_LONG_LOOP;
}
// To avoid the quitting of multiple workers only one worker at a time will execute the check
if (Lock::acquire('worker', 0)) {
// Count active workers and compare them with a maximum value that depends on the load
if (self::tooMuchWorkers()) {
Logger::log('Active worker limit reached, quitting.', Logger::DEBUG);
Lock::release('worker');
return;
}
if (!self::getWaitingJobForPID()) {
self::$state = self::STATE_LONG_LOOP;
// Check free memory
if ($a->isMinMemoryReached()) {
Logger::log('Memory limit reached, quitting.', Logger::DEBUG);
if (Lock::acquire('worker', 0)) {
// Count active workers and compare them with a maximum value that depends on the load
if (self::tooMuchWorkers()) {
Logger::log('Active worker limit reached, quitting.', Logger::DEBUG);
Lock::release('worker');
return;
}
// Check free memory
if ($a->isMinMemoryReached()) {
Logger::log('Memory limit reached, quitting.', Logger::DEBUG);
Lock::release('worker');
return;
}
Lock::release('worker');
return;
}
Lock::release('worker');
}
// Quit the worker once every cron interval
@ -424,7 +428,6 @@ class Worker
self::$db_duration_stat = 0;
self::$db_duration_write = 0;
self::$lock_duration = 0;
self::$state = self::STATE_SHORT_LOOP;
if ($duration > 3600) {
$logger->info('Longer than 1 hour.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'duration' => round($duration/60, 3)]);