Merge pull request #3514 from annando/worker-locking
Fixed locking behaviour for the worker
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commit
ec5a3c3440
2
boot.php
2
boot.php
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@ -40,7 +40,7 @@ define ( 'FRIENDICA_PLATFORM', 'Friendica');
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define ( 'FRIENDICA_CODENAME', 'Asparagus');
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define ( 'FRIENDICA_VERSION', '3.5.2-rc' );
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define ( 'DFRN_PROTOCOL_VERSION', '2.23' );
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define ( 'DB_UPDATE_VERSION', 1225 );
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define ( 'DB_UPDATE_VERSION', 1226 );
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/**
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* @brief Constant with a HTML line break.
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25
database.sql
25
database.sql
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@ -1,6 +1,6 @@
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-- ------------------------------------------
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-- Friendica 3.5.2-dev (Asparagus)
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-- DB_UPDATE_VERSION 1221
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-- Friendica 3.5.2-rc (Asparagus)
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-- DB_UPDATE_VERSION 1226
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-- ------------------------------------------
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@ -193,7 +193,7 @@ CREATE TABLE IF NOT EXISTS `contact` (
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--
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CREATE TABLE IF NOT EXISTS `conv` (
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`id` int(10) unsigned NOT NULL auto_increment,
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`guid` varchar(64) NOT NULL DEFAULT '',
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`guid` varchar(255) NOT NULL DEFAULT '',
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`recips` text,
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`uid` int(11) NOT NULL DEFAULT 0,
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`creator` varchar(255) NOT NULL DEFAULT '',
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@ -270,7 +270,7 @@ CREATE TABLE IF NOT EXISTS `fcontact` (
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`updated` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
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PRIMARY KEY(`id`),
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INDEX `addr` (`addr`(32)),
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INDEX `url` (`url`)
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UNIQUE INDEX `url` (`url`(190))
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) DEFAULT COLLATE utf8mb4_general_ci;
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--
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@ -355,7 +355,7 @@ CREATE TABLE IF NOT EXISTS `gcontact` (
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`generation` tinyint(3) NOT NULL DEFAULT 0,
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`server_url` varchar(255) NOT NULL DEFAULT '',
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PRIMARY KEY(`id`),
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INDEX `nurl` (`nurl`(64)),
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UNIQUE INDEX `nurl` (`nurl`(190)),
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INDEX `name` (`name`(64)),
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INDEX `nick` (`nick`(32)),
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INDEX `addr` (`addr`(64)),
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@ -425,7 +425,7 @@ CREATE TABLE IF NOT EXISTS `gserver` (
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`last_contact` datetime DEFAULT '0001-01-01 00:00:00',
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`last_failure` datetime DEFAULT '0001-01-01 00:00:00',
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PRIMARY KEY(`id`),
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INDEX `nurl` (`nurl`(32))
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UNIQUE INDEX `nurl` (`nurl`(190))
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) DEFAULT COLLATE utf8mb4_general_ci;
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--
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@ -544,6 +544,7 @@ CREATE TABLE IF NOT EXISTS `item` (
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INDEX `uid_parenturi` (`uid`,`parent-uri`(190)),
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INDEX `uid_contactid_created` (`uid`,`contact-id`,`created`),
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INDEX `authorid_created` (`author-id`,`created`),
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INDEX `ownerid` (`owner-id`),
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INDEX `uid_uri` (`uid`,`uri`(190)),
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INDEX `resource-id` (`resource-id`),
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INDEX `contactid_allowcid_allowpid_denycid_denygid` (`contact-id`,`allow_cid`(10),`allow_gid`(10),`deny_cid`(10),`deny_gid`(10)),
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@ -589,7 +590,7 @@ CREATE TABLE IF NOT EXISTS `locks` (
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CREATE TABLE IF NOT EXISTS `mail` (
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`id` int(10) unsigned NOT NULL auto_increment,
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`uid` int(10) unsigned NOT NULL DEFAULT 0,
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`guid` varchar(64) NOT NULL DEFAULT '',
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`guid` varchar(255) NOT NULL DEFAULT '',
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`from-name` varchar(255) NOT NULL DEFAULT '',
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`from-photo` varchar(255) NOT NULL DEFAULT '',
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`from-url` varchar(255) NOT NULL DEFAULT '',
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@ -608,7 +609,8 @@ CREATE TABLE IF NOT EXISTS `mail` (
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INDEX `uid_seen` (`uid`,`seen`),
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INDEX `convid` (`convid`),
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INDEX `uri` (`uri`(64)),
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INDEX `parent-uri` (`parent-uri`(64))
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INDEX `parent-uri` (`parent-uri`(64)),
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INDEX `contactid` (`contact-id`)
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) DEFAULT COLLATE utf8mb4_general_ci;
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--
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@ -746,6 +748,7 @@ CREATE TABLE IF NOT EXISTS `photo` (
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`deny_cid` mediumtext,
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`deny_gid` mediumtext,
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PRIMARY KEY(`id`),
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INDEX `contactid` (`contact-id`),
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INDEX `uid_contactid` (`uid`,`contact-id`),
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INDEX `uid_profile` (`uid`,`profile`),
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INDEX `uid_album_scale_created` (`uid`,`album`(32),`scale`,`created`),
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@ -1019,6 +1022,9 @@ CREATE TABLE IF NOT EXISTS `thread` (
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INDEX `uid_network_created` (`uid`,`network`,`created`),
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INDEX `uid_contactid_commented` (`uid`,`contact-id`,`commented`),
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INDEX `uid_contactid_created` (`uid`,`contact-id`,`created`),
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INDEX `contactid` (`contact-id`),
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INDEX `ownerid` (`owner-id`),
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INDEX `authorid` (`author-id`),
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INDEX `uid_created` (`uid`,`created`),
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INDEX `uid_commented` (`uid`,`commented`),
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INDEX `uid_wall_created` (`uid`,`wall`,`created`)
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@ -1108,6 +1114,7 @@ CREATE TABLE IF NOT EXISTS `workerqueue` (
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`created` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
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`pid` int(11) NOT NULL DEFAULT 0,
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`executed` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
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PRIMARY KEY(`id`)
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PRIMARY KEY(`id`),
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INDEX `priority_created` (`priority`,`created`)
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) DEFAULT COLLATE utf8mb4_general_ci;
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@ -1742,6 +1742,7 @@ function db_definition() {
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),
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"indexes" => array(
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"PRIMARY" => array("id"),
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"priority_created" => array("priority", "created"),
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)
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);
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@ -79,23 +79,29 @@ function poller_run($argv, $argc){
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// Check free memory
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if ($a->min_memory_reached()) {
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logger('Memory limit reached, quitting.', LOGGER_DEBUG);
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return;
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}
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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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logger('Active worker limit reached, quitting.', LOGGER_DEBUG);
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return;
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}
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if (!poller_execute($r[0])) {
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logger('Process execution failed, quitting.', LOGGER_DEBUG);
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return;
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}
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// Quit the poller once every hour
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if (time() > ($starttime + 3600))
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if (time() > ($starttime + 3600)) {
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logger('Process lifetime reachted, quitting.', LOGGER_DEBUG);
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return;
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}
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}
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logger("Couldn't select a workerqueue entry, quitting.", LOGGER_DEBUG);
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}
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/**
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* @brief Execute a worker entry
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@ -146,7 +152,6 @@ function poller_execute($queue) {
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if (function_exists($funcname)) {
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poller_exec_function($queue, $funcname, $argv);
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dba::delete('workerqueue', array('id' => $queue["id"]));
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} else {
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logger("Function ".$funcname." does not exist");
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@ -400,6 +405,8 @@ function poller_too_much_workers() {
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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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$load = current_load();
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if ($load) {
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@ -412,8 +419,6 @@ function poller_too_much_workers() {
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$slope = $maxworkers / pow($maxsysload, $exponent);
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$queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
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$active = 0;
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// Create a list of queue entries grouped by their priority
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$listitem = array();
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@ -421,17 +426,15 @@ function poller_too_much_workers() {
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$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` WHERE NOT EXISTS (SELECT id FROM `workerqueue` WHERE `workerqueue`.`pid` = `process`.`pid`)");
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if ($process = dba::fetch($processes)) {
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$listitem[0] = "0:".$process["running"];
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$active += $process["running"];
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}
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dba::close($processes);
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// Now adding all processes with workerqueue entries
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$entries = dba::p("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` GROUP BY `priority`");
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while ($entry = dba::fetch($entries)) {
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$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` LEFT JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` WHERE `priority` = ?", $entry["priority"]);
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$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` WHERE `priority` = ?", $entry["priority"]);
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if ($process = dba::fetch($processes)) {
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$listitem[$entry["priority"]] = $entry["priority"].":".$process["running"]."/".$entry["entries"];
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$active += $process["running"];
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}
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dba::close($processes);
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}
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@ -465,8 +468,6 @@ function poller_too_much_workers() {
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$a = get_app();
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$a->proc_run($args);
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}
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} else {
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$active = poller_active_workers();
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}
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return($active >= $queues);
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@ -540,16 +541,16 @@ function poller_passing_slow(&$highest_priority) {
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*/
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function poller_worker_process() {
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dba::transaction();
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// Check if we should pass some low priority process
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$highest_priority = 0;
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if (poller_passing_slow($highest_priority)) {
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dba::p('LOCK TABLES `workerqueue` WRITE');
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// Are there waiting processes with a higher priority than the currently highest?
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$r = q("SELECT * FROM `workerqueue`
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WHERE `executed` <= '%s' AND `priority` < %d
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ORDER BY `priority`, `created` LIMIT 1 FOR UPDATE",
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ORDER BY `priority`, `created` LIMIT 1",
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dbesc(NULL_DATE),
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intval($highest_priority));
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if (dbm::is_result($r)) {
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@ -558,18 +559,25 @@ function poller_worker_process() {
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// Give slower processes some processing time
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$r = q("SELECT * FROM `workerqueue`
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WHERE `executed` <= '%s' AND `priority` > %d
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ORDER BY `priority`, `created` LIMIT 1 FOR UPDATE",
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ORDER BY `priority`, `created` LIMIT 1",
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dbesc(NULL_DATE),
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intval($highest_priority));
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if (dbm::is_result($r)) {
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return $r;
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}
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} else {
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dba::p('LOCK TABLES `workerqueue` WRITE');
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}
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// If there is no result (or we shouldn't pass lower processes) we check without priority limit
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if (!dbm::is_result($r)) {
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$r = q("SELECT * FROM `workerqueue` WHERE `executed` <= '%s' ORDER BY `priority`, `created` LIMIT 1 FOR UPDATE", dbesc(NULL_DATE));
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$r = q("SELECT * FROM `workerqueue` WHERE `executed` <= '%s' ORDER BY `priority`, `created` LIMIT 1", dbesc(NULL_DATE));
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}
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// We only unlock the tables here, when we got no data
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if (!dbm::is_result($r)) {
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dba::p('UNLOCK TABLES');
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}
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return $r;
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@ -578,7 +586,7 @@ function poller_worker_process() {
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/**
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* @brief Assigns a workerqueue entry to the current process
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*
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* All the checks after the update are only needed with MyISAM.
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* When we are sure that the table locks are working correctly, we can remove the checks from here
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*
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* @param array $queue Workerqueue entry
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*
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@ -587,10 +595,12 @@ function poller_worker_process() {
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function poller_claim_process($queue) {
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$mypid = getmypid();
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if (!dba::update('workerqueue', array('executed' => datetime_convert(), 'pid' => $mypid),
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array('id' => $queue["id"], 'pid' => 0))) {
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$success = dba::update('workerqueue', array('executed' => datetime_convert(), 'pid' => $mypid),
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array('id' => $queue["id"], 'pid' => 0));
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dba::p('UNLOCK TABLES');
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if (!$success) {
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logger("Couldn't update queue entry ".$queue["id"]." - skip this execution", LOGGER_DEBUG);
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dba::commit();
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return false;
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}
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@ -598,18 +608,14 @@ function poller_claim_process($queue) {
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$id = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
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if (!$id) {
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logger("Queue item ".$queue["id"]." vanished - skip this execution", LOGGER_DEBUG);
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dba::commit();
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return false;
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} elseif ((strtotime($id[0]["executed"]) <= 0) OR ($id[0]["pid"] == 0)) {
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logger("Entry for queue item ".$queue["id"]." wasn't stored - skip this execution", LOGGER_DEBUG);
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dba::commit();
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return false;
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} elseif ($id[0]["pid"] != $mypid) {
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logger("Queue item ".$queue["id"]." is to be executed by process ".$id[0]["pid"]." and not by me (".$mypid.") - skip this execution", LOGGER_DEBUG);
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dba::commit();
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return false;
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}
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dba::commit();
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return true;
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}
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@ -9,6 +9,7 @@ require_once('include/group.php');
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require_once('mod/proxy.php');
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require_once('include/xml.php');
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require_once('include/cache.php');
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require_once('include/enotify.php');
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/**
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* @brief Outputs the counts and the lists of various notifications
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@ -900,12 +900,12 @@ class App {
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return;
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}
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// If the last worker fork was less than 10 seconds before then don't fork another one.
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// If the last worker fork was less than 2 seconds before then don't fork another one.
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// This should prevent the forking of masses of workers.
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$cachekey = 'app:proc_run:started';
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$result = Cache::get($cachekey);
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if (!is_null($result) AND ( time() - $result) < 10) {
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if (!is_null($result) AND ( time() - $result) < 2) {
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return;
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}
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@ -1,6 +1,6 @@
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<?php
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define('UPDATE_VERSION' , 1225);
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define('UPDATE_VERSION' , 1226);
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/**
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*
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