From 1301a2950536afafd9993c4ff2c542699771e351 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Mon, 12 Jun 2017 19:20:50 +0000
Subject: [PATCH] It's faster without locks, gnarl ...

---
 include/poller.php | 11 +----------
 src/Util/Lock.php  |  7 ++-----
 2 files changed, 3 insertions(+), 15 deletions(-)

diff --git a/include/poller.php b/include/poller.php
index 53f855785..42bf58913 100644
--- a/include/poller.php
+++ b/include/poller.php
@@ -88,6 +88,7 @@ function poller_run($argv, $argc){
 		// If we got that queue entry we claim it for us
 		if (!poller_claim_process($r[0])) {
 			Lock::remove('poller_fetch_worker');
+			usleep(rand(0, 200000));
 			continue;
 		} else {
 			// Fetch all workerqueue data while the table is still locked
@@ -95,7 +96,6 @@ function poller_run($argv, $argc){
 			$entries = poller_total_entries();
 			$top_priority = poller_highest_priority();
 			$high_running = poller_process_with_priority_active($top_priority);
-			Lock::remove('poller_fetch_worker');
 		}
 
 		// To avoid the quitting of multiple pollers only one poller at a time will execute the check
@@ -616,10 +616,6 @@ function poller_worker_process() {
 	// Check if we should pass some low priority process
 	$highest_priority = 0;
 
-	if (!Lock::set('poller_fetch_worker')) {
-		return false;
-	}
-
 	if (poller_passing_slow($highest_priority)) {
 		// Are there waiting processes with a higher priority than the currently highest?
 		$r = q("SELECT * FROM `workerqueue`
@@ -647,11 +643,6 @@ function poller_worker_process() {
 		$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)) {
-		Lock::remove('poller_fetch_worker');
-	}
-
 	return $r;
 }
 
diff --git a/src/Util/Lock.php b/src/Util/Lock.php
index 6d7952ffa..36f408cf3 100644
--- a/src/Util/Lock.php
+++ b/src/Util/Lock.php
@@ -57,7 +57,6 @@ class Lock {
 
 		$memcache = self::connectMemcache();
 		if (is_object($memcache)) {
-			$wait_sec = 0.2;
 			$cachekey = get_app()->get_hostname().";lock:".$fn_name;
 
 			do {
@@ -82,15 +81,13 @@ class Lock {
 				dba::unlock();
 
 				if (!$got_lock && ($timeout > 0)) {
-					usleep($wait_sec * 1000000);
+					usleep(rand(10000, 200000));
 				}
 			} while (!$got_lock && ((time() - $start) < $timeout));
 
 			return $got_lock;
 		}
 
-		$wait_sec = 2;
-
 		do {
 			dba::lock('locks');
 			$lock = dba::select('locks', array('locked', 'pid'), array('name' => $fn_name), array('limit' => 1));
@@ -118,7 +115,7 @@ class Lock {
 			dba::unlock();
 
 			if (!$got_lock && ($timeout > 0)) {
-				sleep($wait_sec);
+				usleep(rand(100000, 2000000));
 			}
 		} while (!$got_lock && ((time() - $start) < $timeout));