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Unify Worker Load Formulas

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miqrogroove 2018-06-20 06:06:20 -04:00 committed by GitHub
parent 3eca4bdb57
commit 97cabcecf2
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1 changed files with 4 additions and 24 deletions
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28
src/Core/Worker.php
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@ -626,34 +626,14 @@ class Worker
$maxsysload = intval(Config::get("system", "maxloadavg", 50));
if (Config::get('system', 'worker_linear_load', false)) {
/* The linear load calculation works fine if there is a low
* number of maximum queues and a high load base level.
* This can be present at shared hosters.
*/
$tinyload = 1;
if ($load > $maxsysload) {
$queues = 0;
} elseif ($load > $tinyload) {
//Provide $queues number between 1 (below max load) and $maxqueues - 1 (above tiny load).
$range = $maxsysload - $tinyload;
$slope = 1.00 - (($load - $tinyload) / $range);
$target = $slope * ($maxqueues - 1);
$queues = intval(ceil($target));
}
$exponent = 1;
} else {
/* The exponentional load calculation respects the load behaviour
* of Linux systems with regular hardware that normally idles
* with load values near 0.
*/
$maxworkers = $queues;
// Some magical mathemathics to reduce the workers
$exponent = 3;
$slope = $maxworkers / pow($maxsysload, $exponent);
$queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
}
$slope = pow(max(0, $maxsysload - $load) / $maxsysload, $exponent);
$queues = intval(ceil($slope * $maxqueues));
$processlist = '';
if (Config::get('system', 'worker_debug')) {