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Furtner improval of the worker speed

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This commit is contained in:
Michael 2019-02-09 23:10:15 +00:00
parent 3aa77685fc
commit 171cfe8f44
4 changed files with 159 additions and 47 deletions
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4
config/defaults.config.php
View file

@ -397,6 +397,10 @@ return [
// If enabled, it prints out the jobs per minute.
'worker_jpm' => false,
// worker_jpm_limit (String)
// List of minutes for the JPM calculation
'worker_jpm_limit' => '1, 10, 60',
// worker_load_exponent (Integer)
// Default 3, which allows only 25% of the maximum worker queues when server load reaches around 37% of maximum load.
// For a linear response where 25% of worker queues are allowed at 75% of maximum load, set this to 1.

4
mod/worker.php
View file

@ -39,8 +39,10 @@ function worker_init()
Worker::callWorker();
$passing_slow = false;
$entries = 0;
$deferred = 0;
if ($r = Worker::workerProcess($passing_slow)) {
if ($r = Worker::workerProcess($passing_slow, $entries, $deferred)) {
// On most configurations this parameter wouldn't have any effect.
// But since it doesn't destroy anything, we just try to get more execution time in any way.
set_time_limit(0);

196
src/Core/Worker.php
View file

@ -22,9 +22,12 @@ use Friendica\Util\Network;
class Worker
{
private static $up_start;
private static $db_duration;
private static $db_duration = 0;
private static $db_duration_count = 0;
private static $db_duration_write = 0;
private static $db_duration_stat = 0;
private static $lock_duration = 0;
private static $last_update;
private static $lock_duration;
/**
* @brief Processes the tasks that are in the workerqueue table
@ -86,8 +89,11 @@ class Worker
$starttime = time();
$entries = 0;
$deferred = 0;
// We fetch the next queue entry that is about to be executed
while ($r = self::workerProcess($passing_slow)) {
while ($r = self::workerProcess($passing_slow, $entries, $deferred)) {
// When we are processing jobs with a lower priority, we don't refetch new jobs
// Otherwise fast jobs could wait behind slow ones and could be blocked.
$refetched = $passing_slow;
@ -107,9 +113,7 @@ class Worker
$entries = self::totalEntries();
$deferred = self::deferredEntries();
if (Lock::acquire('worker_process', 0)) {
$stamp = (float)microtime(true);
$refetched = self::findWorkerProcesses($passing_slow, $entries, $deferred);
self::$db_duration += (microtime(true) - $stamp);
Lock::release('worker_process');
}
}
@ -117,9 +121,8 @@ class Worker
// To avoid the quitting of multiple workers only one worker at a time will execute the check
if (Lock::acquire('worker', 0)) {
$stamp = (float)microtime(true);
// Count active workers and compare them with a maximum value that depends on the load
if (self::tooMuchWorkers()) {
if (self::tooMuchWorkers($entries, $deferred)) {
Logger::log('Active worker limit reached, quitting.', Logger::DEBUG);
Lock::release('worker');
return;
@ -132,7 +135,6 @@ class Worker
return;
}
Lock::release('worker');
self::$db_duration += (microtime(true) - $stamp);
}
// Quit the worker once every 5 minutes
@ -149,6 +151,20 @@ class Worker
Logger::log("Couldn't select a workerqueue entry, quitting process " . getmypid() . ".", Logger::DEBUG);
}
/**
* @brief Check if non executed tasks do exist in the worker queue
*
* @return boolean Returns "true" if tasks are existing
* @throws \Exception
*/
private static function entriesExists()
{
$stamp = (float)microtime(true);
$exists = DBA::exists('workerqueue', ["NOT `done` AND `pid` = 0 AND `next_try` < ?", DateTimeFormat::utcNow()]);
self::$db_duration += (microtime(true) - $stamp);
return $exists;
}
/**
* @brief Returns the number of deferred entries in the worker queue
*
@ -157,7 +173,11 @@ class Worker
*/
private static function deferredEntries()
{
return DBA::count('workerqueue', ["NOT `done` AND `pid` = 0 AND `next_try` > ?", DateTimeFormat::utcNow()]);
$stamp = (float)microtime(true);
$count = DBA::count('workerqueue', ["NOT `done` AND `pid` = 0 AND `next_try` > ?", DateTimeFormat::utcNow()]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_count += (microtime(true) - $stamp);
return $count;
}
/**
@ -168,7 +188,11 @@ class Worker
*/
private static function totalEntries()
{
return DBA::count('workerqueue', ['done' => false, 'pid' => 0]);
$stamp = (float)microtime(true);
$count = DBA::count('workerqueue', ['done' => false, 'pid' => 0]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_count += (microtime(true) - $stamp);
return $count;
}
/**
@ -179,8 +203,10 @@ class Worker
*/
private static function highestPriority()
{
$stamp = (float)microtime(true);
$condition = ["`pid` = 0 AND NOT `done` AND `next_try` < ?", DateTimeFormat::utcNow()];
$workerqueue = DBA::selectFirst('workerqueue', ['priority'], $condition, ['order' => ['priority']]);
self::$db_duration += (microtime(true) - $stamp);
if (DBA::isResult($workerqueue)) {
return $workerqueue["priority"];
} else {
@ -252,6 +278,7 @@ class Worker
$stamp = (float)microtime(true);
DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow()], ['pid' => $mypid, 'done' => false]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
array_shift($argv);
@ -259,12 +286,12 @@ class Worker
self::execFunction($queue, $include, $argv, true);
$stamp = (float)microtime(true);
$condition = ["`id` = ? AND `next_try` < ?", $queue['id'], DateTimeFormat::utcNow()];
if (DBA::update('workerqueue', ['done' => true], $condition)) {
Config::set('system', 'last_worker_execution', DateTimeFormat::utcNow());
}
self::$db_duration = (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
return true;
}
@ -276,7 +303,10 @@ class Worker
if (!validate_include($include)) {
Logger::log("Include file ".$argv[0]." is not valid!");
$stamp = (float)microtime(true);
DBA::delete('workerqueue', ['id' => $queue["id"]]);
self::$db_duration = (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
return true;
}
@ -297,6 +327,7 @@ class Worker
$stamp = (float)microtime(true);
DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow()], ['pid' => $mypid, 'done' => false]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
self::execFunction($queue, $funcname, $argv, false);
@ -306,9 +337,13 @@ class Worker
Config::set('system', 'last_worker_execution', DateTimeFormat::utcNow());
}
self::$db_duration = (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
} else {
Logger::log("Function ".$funcname." does not exist");
$stamp = (float)microtime(true);
DBA::delete('workerqueue', ['id' => $queue["id"]]);
self::$db_duration = (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
return true;
@ -361,7 +396,7 @@ class Worker
$a->process_id = $new_process_id;
$a->queue = $queue;
$up_duration = number_format(microtime(true) - self::$up_start, 3);
$up_duration = microtime(true) - self::$up_start;
// Reset global data to avoid interferences
unset($_SESSION);
@ -377,21 +412,27 @@ class Worker
$duration = (microtime(true) - $stamp);
self::$up_start = microtime(true);
/* With these values we can analyze how effective the worker is.
* The database and rest time should be low since this is the unproductive time.
* The execution time is the productive time.
* By changing parameters like the maximum number of workers we can check the effectivness.
*/
Logger::log(
'DB: '.number_format(self::$db_duration, 2).
' - Lock: '.number_format(self::$lock_duration, 2).
' - Rest: '.number_format($up_duration - self::$db_duration - self::$lock_duration, 2).
' - Execution: '.number_format($duration, 2),
'DB: '.number_format(self::$db_duration - (self::$db_duration_count + self::$db_duration_write + self::$db_duration_stat), 4).
' - DB-Count: '.number_format(self::$db_duration_count, 4).
' - DB-Stat: '.number_format(self::$db_duration_stat, 4).
' - DB-Write: '.number_format(self::$db_duration_write, 4).
' - Lock: '.number_format(self::$lock_duration, 4).
' - Rest: '.number_format(max(0, $up_duration - (self::$db_duration + self::$lock_duration)), 4).
' - Execution: '.number_format($duration, 4),
Logger::DEBUG
);
self::$up_start = microtime(true);
self::$db_duration = 0;
self::$db_duration_count = 0;
self::$db_duration_stat = 0;
self::$db_duration_write = 0;
self::$lock_duration = 0;
if ($duration > 3600) {
@ -506,7 +547,9 @@ class Worker
$max = $r["Value"];
}
// Or it can be granted. This overrides the system variable
$stamp = (float)microtime(true);
$r = DBA::p('SHOW GRANTS');
self::$db_duration += (microtime(true) - $stamp);
while ($grants = DBA::fetch($r)) {
$grant = array_pop($grants);
if (stristr($grant, "GRANT USAGE ON")) {
@ -521,7 +564,9 @@ class Worker
// If $max is set we will use the processlist to determine the current number of connections
// The processlist only shows entries of the current user
if ($max != 0) {
$stamp = (float)microtime(true);
$r = DBA::p('SHOW PROCESSLIST');
self::$db_duration += (microtime(true) - $stamp);
$used = DBA::numRows($r);
DBA::close($r);
@ -571,20 +616,25 @@ class Worker
*/
private static function killStaleWorkers()
{
$stamp = (float)microtime(true);
$entries = DBA::select(
'workerqueue',
['id', 'pid', 'executed', 'priority', 'parameter'],
['NOT `done` AND `pid` != 0'],
['order' => ['priority', 'created']]
);
self::$db_duration += (microtime(true) - $stamp);
while ($entry = DBA::fetch($entries)) {
if (!posix_kill($entry["pid"], 0)) {
$stamp = (float)microtime(true);
DBA::update(
'workerqueue',
['executed' => DBA::NULL_DATETIME, 'pid' => 0],
['id' => $entry["id"]]
);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
} else {
// Kill long running processes
// Check if the priority is in a valid range
@ -616,11 +666,14 @@ class Worker
} elseif ($entry["priority"] != PRIORITY_CRITICAL) {
$new_priority = PRIORITY_NEGLIGIBLE;
}
$stamp = (float)microtime(true);
DBA::update(
'workerqueue',
['executed' => DBA::NULL_DATETIME, 'created' => DateTimeFormat::utcNow(), 'priority' => $new_priority, 'pid' => 0],
['id' => $entry["id"]]
);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
} else {
Logger::log("Worker process ".$entry["pid"]." (".substr(json_encode($argv), 0, 50).") now runs for ".round($duration)." of ".$max_duration." allowed minutes. That's okay.", Logger::DEBUG);
}
@ -631,10 +684,13 @@ class Worker
/**
* @brief Checks if the number of active workers exceeds the given limits
*
* @param integer $entries Total number of queue entries
* @param integer $deferred Number of deferred queue entries
*
* @return bool Are there too much workers running?
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function tooMuchWorkers()
public static function tooMuchWorkers($entries = 0, $deferred = 0)
{
$queues = Config::get("system", "worker_queues", 4);
@ -659,10 +715,13 @@ class Worker
$processlist = '';
if (Config::get('system', 'worker_jpm')) {
$intervals = [1, 10, 60];
$intervals = explode(',', Config::get('system', 'worker_jpm_range'));
$jobs_per_minute = [];
foreach ($intervals as $interval) {
$stamp = (float)microtime(true);
$jobs = DBA::p("SELECT COUNT(*) AS `jobs` FROM `workerqueue` WHERE `done` AND `executed` > UTC_TIMESTAMP() - INTERVAL ? MINUTE", $interval);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_stat += (microtime(true) - $stamp);
if ($job = DBA::fetch($jobs)) {
$jobs_per_minute[$interval] = number_format($job['jobs'] / $interval, 0);
}
@ -671,33 +730,51 @@ class Worker
$processlist = ' - jpm: '.implode('/', $jobs_per_minute);
}
// Create a list of queue entries grouped by their priority
$listitem = [0 => ''];
$idle_workers = $active;
if (Config::get('system', 'worker_debug')) {
// Create a list of queue entries grouped by their priority
$listitem = [0 => ''];
$idle_workers = $active;
// Now adding all processes with workerqueue entries
$entries = DBA::p("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` WHERE NOT `done` GROUP BY `priority`");
while ($entry = DBA::fetch($entries)) {
$stamp = (float)microtime(true);
$jobs = DBA::p("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` WHERE NOT `done` AND `next_try` < ? GROUP BY `priority`", DateTimeFormat::utcNow());
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_stat += (microtime(true) - $stamp);
while ($entry = DBA::fetch($jobs)) {
$stamp = (float)microtime(true);
$processes = DBA::p("SELECT COUNT(*) AS `running` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` WHERE NOT `done` AND `priority` = ?", $entry["priority"]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_stat += (microtime(true) - $stamp);
if ($process = DBA::fetch($processes)) {
$idle_workers -= $process["running"];
$listitem[$entry["priority"]] = $entry["priority"].":".$process["running"]."/".$entry["entries"];
}
DBA::close($processes);
}
DBA::close($entries);
DBA::close($jobs);
} else {
$stamp = (float)microtime(true);
$jobs = DBA::p("SELECT COUNT(*) AS `running`, `priority` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` AND NOT `done` GROUP BY `priority` ORDER BY `priority`");
self::$db_duration += (microtime(true) - $stamp);
$listitem[0] = "0:" . max(0, $idle_workers);
$processlist .= ' ('.implode(', ', $listitem).')';
while ($entry = DBA::fetch($jobs)) {
$idle_workers -= $entry["running"];
$listitem[$entry["priority"]] = $entry["priority"].":".$entry["running"];
}
DBA::close($jobs);
}
$deferred = self::deferredEntries();
$entries = max(self::totalEntries() - $deferred, 0);
$listitem[0] = "0:" . max(0, $idle_workers);
if (Config::get("system", "worker_fastlane", false) && ($queues > 0) && ($entries > 0) && ($active >= $queues)) {
$processlist .= ' ('.implode(', ', $listitem).')';
if (empty($deferred) && empty($entries)) {
$deferred = self::deferredEntries();
$entries = max(self::totalEntries() - $deferred, 0);
}
if (Config::get("system", "worker_fastlane", false) && ($queues > 0) && self::entriesExists() && ($active >= $queues)) {
$top_priority = self::highestPriority();
$high_running = self::processWithPriorityActive($top_priority);
@ -707,7 +784,7 @@ class Worker
}
}
Logger::log("Load: " . $load ."/" . $maxsysload . " - processes: " . $deferred . "/" . $active . "/" . $entries . $processlist . " - maximum: " . $queues . "/" . $maxqueues, Logger::DEBUG);
Logger::log("Load: " . $load ."/" . $maxsysload . " - processes: " . $deferred . "/" . $active . "/" . ($entries - $deferred) . $processlist . " - maximum: " . $queues . "/" . $maxqueues, Logger::DEBUG);
// Are there fewer workers running as possible? Then fork a new one.
if (!Config::get("system", "worker_dont_fork", false) && ($queues > ($active + 1)) && ($entries > 1)) {
@ -736,7 +813,10 @@ class Worker
*/
private static function activeWorkers()
{
return DBA::count('process', ['command' => 'Worker.php']);
$stamp = (float)microtime(true);
$count = DBA::count('process', ['command' => 'Worker.php']);
self::$db_duration += (microtime(true) - $stamp);
return $count;
}
/**
@ -753,11 +833,13 @@ class Worker
{
$highest_priority = 0;
$stamp = (float)microtime(true);
$r = DBA::p(
"SELECT `priority`
FROM `process`
INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` AND NOT `done`"
);
self::$db_duration += (microtime(true) - $stamp);
// No active processes at all? Fine
if (!DBA::isResult($r)) {
@ -829,6 +911,7 @@ class Worker
$ids = [];
if (self::passingSlow($highest_priority)) {
// Are there waiting processes with a higher priority than the currently highest?
$stamp = (float)microtime(true);
$result = DBA::select(
'workerqueue',
['id'],
@ -836,6 +919,7 @@ class Worker
$highest_priority, DateTimeFormat::utcNow()],
['limit' => $limit, 'order' => ['priority', 'created']]
);
self::$db_duration += (microtime(true) - $stamp);
while ($id = DBA::fetch($result)) {
$ids[] = $id["id"];
@ -846,6 +930,7 @@ class Worker
if (!$found) {
// Give slower processes some processing time
$stamp = (float)microtime(true);
$result = DBA::select(
'workerqueue',
['id'],
@ -853,6 +938,7 @@ class Worker
$highest_priority, DateTimeFormat::utcNow()],
['limit' => $limit, 'order' => ['priority', 'created']]
);
self::$db_duration += (microtime(true) - $stamp);
while ($id = DBA::fetch($result)) {
$ids[] = $id["id"];
@ -866,6 +952,7 @@ class Worker
// If there is no result (or we shouldn't pass lower processes) we check without priority limit
if (!$found) {
$stamp = (float)microtime(true);
$result = DBA::select(
'workerqueue',
['id'],
@ -873,6 +960,7 @@ class Worker
DateTimeFormat::utcNow()],
['limit' => $limit, 'order' => ['priority', 'created']]
);
self::$db_duration += (microtime(true) - $stamp);
while ($id = DBA::fetch($result)) {
$ids[] = $id["id"];
@ -883,9 +971,12 @@ class Worker
}
if ($found) {
$stamp = (float)microtime(true);
$condition = "`id` IN (".substr(str_repeat("?, ", count($ids)), 0, -2).") AND `pid` = 0 AND NOT `done`";
array_unshift($ids, $condition);
DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow(), 'pid' => $mypid], $ids);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
return $found;
@ -895,40 +986,41 @@ class Worker
* @brief Returns the next worker process
*
* @param boolean $passing_slow Returns if we had passed low priority processes
* @param integer $entries Returns total number of queue entries
* @param integer $deferred Returns number of deferred queue entries
*
* @return string SQL statement
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function workerProcess(&$passing_slow)
public static function workerProcess(&$passing_slow, &$entries, &$deferred)
{
$stamp = (float)microtime(true);
// There can already be jobs for us in the queue.
$stamp = (float)microtime(true);
$r = DBA::select('workerqueue', [], ['pid' => getmypid(), 'done' => false]);
self::$db_duration += (microtime(true) - $stamp);
if (DBA::isResult($r)) {
self::$db_duration += (microtime(true) - $stamp);
return DBA::toArray($r);
}
DBA::close($r);
$stamp = (float)microtime(true);
// Counting the rows outside the lock reduces the lock time
$entries = self::totalEntries();
$deferred = self::deferredEntries();
$stamp = (float)microtime(true);
if (!Lock::acquire('worker_process')) {
return false;
}
self::$lock_duration = (microtime(true) - $stamp);
self::$lock_duration += (microtime(true) - $stamp);
$stamp = (float)microtime(true);
$found = self::findWorkerProcesses($passing_slow, $entries, $deferred);
self::$db_duration += (microtime(true) - $stamp);
Lock::release('worker_process');
if ($found) {
$stamp = (float)microtime(true);
$r = DBA::select('workerqueue', [], ['pid' => getmypid(), 'done' => false]);
self::$db_duration += (microtime(true) - $stamp);
return DBA::toArray($r);
}
return false;
@ -943,7 +1035,10 @@ class Worker
{
$mypid = getmypid();
$stamp = (float)microtime(true);
DBA::update('workerqueue', ['executed' => DBA::NULL_DATETIME, 'pid' => 0], ['pid' => $mypid, 'done' => false]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
/**
@ -1022,9 +1117,12 @@ class Worker
$timeout = Config::get("system", "frontend_worker_timeout", 10);
/// @todo We should clean up the corresponding workerqueue entries as well
$stamp = (float)microtime(true);
$condition = ["`created` < ? AND `command` = 'worker.php'",
DateTimeFormat::utc("now - ".$timeout." minutes")];
DBA::delete('process', $condition);
self::$db_duration = (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
/**
@ -1200,8 +1298,11 @@ class Worker
Logger::log('Defer execution ' . $retrial . ' of id ' . $id . ' to ' . $next . ' - priority old/new: ' . $queue['priority'] . '/' . $priority, Logger::DEBUG);
$stamp = (float)microtime(true);
$fields = ['retrial' => $retrial + 1, 'next_try' => $next, 'executed' => DBA::NULL_DATETIME, 'pid' => 0, 'priority' => $priority];
DBA::update('workerqueue', $fields, ['id' => $id]);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
/**
@ -1241,7 +1342,10 @@ class Worker
*/
public static function IPCSetJobState($jobs)
{
$stamp = (float)microtime(true);
DBA::update('worker-ipc', ['jobs' => $jobs], ['key' => 1], true);
self::$db_duration += (microtime(true) - $stamp);
self::$db_duration_write += (microtime(true) - $stamp);
}
/**
@ -1253,7 +1357,9 @@ class Worker
*/
public static function IPCJobsExists()
{
$stamp = (float)microtime(true);
$row = DBA::selectFirst('worker-ipc', ['jobs'], ['key' => 1]);
self::$db_duration += (microtime(true) - $stamp);
// When we don't have a row, no job is running
if (!DBA::isResult($row)) {

2
src/Worker/Cron.php
View file

@ -285,7 +285,7 @@ class Cron
Logger::log("Polling " . $contact["network"] . " " . $contact["id"] . " " . $contact['priority'] . " " . $contact["nick"] . " " . $contact["name"]);
Worker::add(['priority' => $priority, 'dont_fork' => true], 'OnePoll', (int)$contact['id']);
Worker::add(['priority' => $priority, 'dont_fork' => true, 'force_priority' => true], 'OnePoll', (int)$contact['id']);
}
}
}