Browse Source

Fixed locking behaviour for the worker

pull/3514/head
Michael 4 years ago
parent
commit
21eb9a4b2e
7 changed files with 50 additions and 35 deletions
  1. +1
    -1
      boot.php
  2. +16
    -9
      database.sql
  3. +1
    -0
      include/dbstructure.php
  4. +28
    -22
      include/poller.php
  5. +1
    -0
      mod/ping.php
  6. +2
    -2
      src/App.php
  7. +1
    -1
      update.php

+ 1
- 1
boot.php View File

@ -40,7 +40,7 @@ define ( 'FRIENDICA_PLATFORM', 'Friendica');
define ( 'FRIENDICA_CODENAME', 'Asparagus');
define ( 'FRIENDICA_VERSION', '3.5.2-rc' );
define ( 'DFRN_PROTOCOL_VERSION', '2.23' );
define ( 'DB_UPDATE_VERSION', 1225 );
define ( 'DB_UPDATE_VERSION', 1226 );
/**
* @brief Constant with a HTML line break.


+ 16
- 9
database.sql View File

@ -1,6 +1,6 @@
-- ------------------------------------------
-- Friendica 3.5.2-dev (Asparagus)
-- DB_UPDATE_VERSION 1221
-- Friendica 3.5.2-rc (Asparagus)
-- DB_UPDATE_VERSION 1226
-- ------------------------------------------
@ -193,7 +193,7 @@ CREATE TABLE IF NOT EXISTS `contact` (
--
CREATE TABLE IF NOT EXISTS `conv` (
`id` int(10) unsigned NOT NULL auto_increment,
`guid` varchar(64) NOT NULL DEFAULT '',
`guid` varchar(255) NOT NULL DEFAULT '',
`recips` text,
`uid` int(11) NOT NULL DEFAULT 0,
`creator` varchar(255) NOT NULL DEFAULT '',
@ -270,7 +270,7 @@ CREATE TABLE IF NOT EXISTS `fcontact` (
`updated` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
PRIMARY KEY(`id`),
INDEX `addr` (`addr`(32)),
INDEX `url` (`url`)
UNIQUE INDEX `url` (`url`(190))
) DEFAULT COLLATE utf8mb4_general_ci;
--
@ -355,7 +355,7 @@ CREATE TABLE IF NOT EXISTS `gcontact` (
`generation` tinyint(3) NOT NULL DEFAULT 0,
`server_url` varchar(255) NOT NULL DEFAULT '',
PRIMARY KEY(`id`),
INDEX `nurl` (`nurl`(64)),
UNIQUE INDEX `nurl` (`nurl`(190)),
INDEX `name` (`name`(64)),
INDEX `nick` (`nick`(32)),
INDEX `addr` (`addr`(64)),
@ -425,7 +425,7 @@ CREATE TABLE IF NOT EXISTS `gserver` (
`last_contact` datetime DEFAULT '0001-01-01 00:00:00',
`last_failure` datetime DEFAULT '0001-01-01 00:00:00',
PRIMARY KEY(`id`),
INDEX `nurl` (`nurl`(32))
UNIQUE INDEX `nurl` (`nurl`(190))
) DEFAULT COLLATE utf8mb4_general_ci;
--
@ -544,6 +544,7 @@ CREATE TABLE IF NOT EXISTS `item` (
INDEX `uid_parenturi` (`uid`,`parent-uri`(190)),
INDEX `uid_contactid_created` (`uid`,`contact-id`,`created`),
INDEX `authorid_created` (`author-id`,`created`),
INDEX `ownerid` (`owner-id`),
INDEX `uid_uri` (`uid`,`uri`(190)),
INDEX `resource-id` (`resource-id`),
INDEX `contactid_allowcid_allowpid_denycid_denygid` (`contact-id`,`allow_cid`(10),`allow_gid`(10),`deny_cid`(10),`deny_gid`(10)),
@ -589,7 +590,7 @@ CREATE TABLE IF NOT EXISTS `locks` (
CREATE TABLE IF NOT EXISTS `mail` (
`id` int(10) unsigned NOT NULL auto_increment,
`uid` int(10) unsigned NOT NULL DEFAULT 0,
`guid` varchar(64) NOT NULL DEFAULT '',
`guid` varchar(255) NOT NULL DEFAULT '',
`from-name` varchar(255) NOT NULL DEFAULT '',
`from-photo` varchar(255) NOT NULL DEFAULT '',
`from-url` varchar(255) NOT NULL DEFAULT '',
@ -608,7 +609,8 @@ CREATE TABLE IF NOT EXISTS `mail` (
INDEX `uid_seen` (`uid`,`seen`),
INDEX `convid` (`convid`),
INDEX `uri` (`uri`(64)),
INDEX `parent-uri` (`parent-uri`(64))
INDEX `parent-uri` (`parent-uri`(64)),
INDEX `contactid` (`contact-id`)
) DEFAULT COLLATE utf8mb4_general_ci;
--
@ -746,6 +748,7 @@ CREATE TABLE IF NOT EXISTS `photo` (
`deny_cid` mediumtext,
`deny_gid` mediumtext,
PRIMARY KEY(`id`),
INDEX `contactid` (`contact-id`),
INDEX `uid_contactid` (`uid`,`contact-id`),
INDEX `uid_profile` (`uid`,`profile`),
INDEX `uid_album_scale_created` (`uid`,`album`(32),`scale`,`created`),
@ -1019,6 +1022,9 @@ CREATE TABLE IF NOT EXISTS `thread` (
INDEX `uid_network_created` (`uid`,`network`,`created`),
INDEX `uid_contactid_commented` (`uid`,`contact-id`,`commented`),
INDEX `uid_contactid_created` (`uid`,`contact-id`,`created`),
INDEX `contactid` (`contact-id`),
INDEX `ownerid` (`owner-id`),
INDEX `authorid` (`author-id`),
INDEX `uid_created` (`uid`,`created`),
INDEX `uid_commented` (`uid`,`commented`),
INDEX `uid_wall_created` (`uid`,`wall`,`created`)
@ -1108,6 +1114,7 @@ CREATE TABLE IF NOT EXISTS `workerqueue` (
`created` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
`pid` int(11) NOT NULL DEFAULT 0,
`executed` datetime NOT NULL DEFAULT '0001-01-01 00:00:00',
PRIMARY KEY(`id`)
PRIMARY KEY(`id`),
INDEX `priority_created` (`priority`,`created`)
) DEFAULT COLLATE utf8mb4_general_ci;

+ 1
- 0
include/dbstructure.php View File

@ -1742,6 +1742,7 @@ function db_definition() {
),
"indexes" => array(
"PRIMARY" => array("id"),
"priority_created" => array("priority", "created"),
)
);


+ 28
- 22
include/poller.php View File

@ -79,22 +79,28 @@ function poller_run($argv, $argc){
// Check free memory
if ($a->min_memory_reached()) {
logger('Memory limit reached, quitting.', LOGGER_DEBUG);
return;
}
// Count active workers and compare them with a maximum value that depends on the load
if (poller_too_much_workers()) {
logger('Active worker limit reached, quitting.', LOGGER_DEBUG);
return;
}
if (!poller_execute($r[0])) {
logger('Process execution failed, quitting.', LOGGER_DEBUG);
return;
}
// Quit the poller once every hour
if (time() > ($starttime + 3600))
if (time() > ($starttime + 3600)) {
logger('Process lifetime reachted, quitting.', LOGGER_DEBUG);
return;
}
}
logger("Couldn't select a workerqueue entry, quitting.", LOGGER_DEBUG);
}
/**
@ -146,7 +152,6 @@ function poller_execute($queue) {
if (function_exists($funcname)) {
poller_exec_function($queue, $funcname, $argv);
dba::delete('workerqueue', array('id' => $queue["id"]));
} else {
logger("Function ".$funcname." does not exist");
@ -400,6 +405,8 @@ function poller_too_much_workers() {
$maxqueues = $queues;
$active = poller_active_workers();
// Decrease the number of workers at higher load
$load = current_load();
if ($load) {
@ -412,8 +419,6 @@ function poller_too_much_workers() {
$slope = $maxworkers / pow($maxsysload, $exponent);
$queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
$active = 0;
// Create a list of queue entries grouped by their priority
$listitem = array();
@ -421,17 +426,15 @@ function poller_too_much_workers() {
$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` WHERE NOT EXISTS (SELECT id FROM `workerqueue` WHERE `workerqueue`.`pid` = `process`.`pid`)");
if ($process = dba::fetch($processes)) {
$listitem[0] = "0:".$process["running"];
$active += $process["running"];
}
dba::close($processes);
// Now adding all processes with workerqueue entries
$entries = dba::p("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` GROUP BY `priority`");
while ($entry = dba::fetch($entries)) {
$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` LEFT JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` WHERE `priority` = ?", $entry["priority"]);
$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` WHERE `priority` = ?", $entry["priority"]);
if ($process = dba::fetch($processes)) {
$listitem[$entry["priority"]] = $entry["priority"].":".$process["running"]."/".$entry["entries"];
$active += $process["running"];
}
dba::close($processes);
}
@ -465,8 +468,6 @@ function poller_too_much_workers() {
$a = get_app();
$a->proc_run($args);
}
} else {
$active = poller_active_workers();
}
return($active >= $queues);
@ -540,16 +541,16 @@ function poller_passing_slow(&$highest_priority) {
*/
function poller_worker_process() {
dba::transaction();
// Check if we should pass some low priority process
$highest_priority = 0;
if (poller_passing_slow($highest_priority)) {
dba::p('LOCK TABLES `workerqueue` WRITE');
// Are there waiting processes with a higher priority than the currently highest?
$r = q("SELECT * FROM `workerqueue`
WHERE `executed` <= '%s' AND `priority` < %d
ORDER BY `priority`, `created` LIMIT 1 FOR UPDATE",
ORDER BY `priority`, `created` LIMIT 1",
dbesc(NULL_DATE),
intval($highest_priority));
if (dbm::is_result($r)) {
@ -558,18 +559,25 @@ function poller_worker_process() {
// Give slower processes some processing time
$r = q("SELECT * FROM `workerqueue`
WHERE `executed` <= '%s' AND `priority` > %d
ORDER BY `priority`, `created` LIMIT 1 FOR UPDATE",
ORDER BY `priority`, `created` LIMIT 1",
dbesc(NULL_DATE),
intval($highest_priority));
if (dbm::is_result($r)) {
return $r;
}
} else {
dba::p('LOCK TABLES `workerqueue` WRITE');
}
// If there is no result (or we shouldn't pass lower processes) we check without priority limit
if (!dbm::is_result($r)) {
$r = q("SELECT * FROM `workerqueue` WHERE `executed` <= '%s' ORDER BY `priority`, `created` LIMIT 1 FOR UPDATE", dbesc(NULL_DATE));
$r = q("SELECT * FROM `workerqueue` WHERE `executed` <= '%s' ORDER BY `priority`, `created` LIMIT 1", dbesc(NULL_DATE));
}
// We only unlock the tables here, when we got no data
if (!dbm::is_result($r)) {
dba::p('UNLOCK TABLES');
}
return $r;
@ -578,7 +586,7 @@ function poller_worker_process() {
/**
* @brief Assigns a workerqueue entry to the current process
*
* All the checks after the update are only needed with MyISAM.
* When we are sure that the table locks are working correctly, we can remove the checks from here
*
* @param array $queue Workerqueue entry
*
@ -587,10 +595,12 @@ function poller_worker_process() {
function poller_claim_process($queue) {
$mypid = getmypid();
if (!dba::update('workerqueue', array('executed' => datetime_convert(), 'pid' => $mypid),
array('id' => $queue["id"], 'pid' => 0))) {
$success = dba::update('workerqueue', array('executed' => datetime_convert(), 'pid' => $mypid),
array('id' => $queue["id"], 'pid' => 0));
dba::p('UNLOCK TABLES');
if (!$success) {
logger("Couldn't update queue entry ".$queue["id"]." - skip this execution", LOGGER_DEBUG);
dba::commit();
return false;
}
@ -598,18 +608,14 @@ function poller_claim_process($queue) {
$id = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
if (!$id) {
logger("Queue item ".$queue["id"]." vanished - skip this execution", LOGGER_DEBUG);
dba::commit();
return false;
} elseif ((strtotime($id[0]["executed"]) <= 0) OR ($id[0]["pid"] == 0)) {
logger("Entry for queue item ".$queue["id"]." wasn't stored - skip this execution", LOGGER_DEBUG);
dba::commit();
return false;
} elseif ($id[0]["pid"] != $mypid) {
logger("Queue item ".$queue["id"]." is to be executed by process ".$id[0]["pid"]." and not by me (".$mypid.") - skip this execution", LOGGER_DEBUG);
dba::commit();
return false;
}
dba::commit();
return true;
}


+ 1
- 0
mod/ping.php View File

@ -9,6 +9,7 @@ require_once('include/group.php');
require_once('mod/proxy.php');
require_once('include/xml.php');
require_once('include/cache.php');
require_once('include/enotify.php');
/**
* @brief Outputs the counts and the lists of various notifications


+ 2
- 2
src/App.php View File

@ -900,12 +900,12 @@ class App {
return;
}
// If the last worker fork was less than 10 seconds before then don't fork another one.
// If the last worker fork was less than 2 seconds before then don't fork another one.
// This should prevent the forking of masses of workers.
$cachekey = 'app:proc_run:started';
$result = Cache::get($cachekey);
if (!is_null($result) AND ( time() - $result) < 10) {
if (!is_null($result) AND ( time() - $result) < 2) {
return;
}


+ 1
- 1
update.php View File

@ -1,6 +1,6 @@
<?php
define('UPDATE_VERSION' , 1225);
define('UPDATE_VERSION' , 1226);
/**
*


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