We are detecting several issue regarding php flock. (PHP: flock - Manual)
It’s took too much time, in every pages… and it’s coming from Typo3 Source Code v.8.7 Long Time Support without any mods.
LockStrategy Source Code from: web/typo3/sysext/core/Classes/Locking/FileLockStrategy.php
- @param int $modTransaction tracee LOCK_CAPABILITY_EXCLUSIVE or LOCK_CAPABILITY_SHARED or self::LOCK_CAPABILITY_NOBLOCK * @return bool Returns TRUE if the lock was acquired successfully * @throws LockAcquireException if the lock could not be acquired * @throws LockAcquireWouldBlockException if the acquire would have blocked and NOBLOCK was set */ public function acquire($mode = self::LOCK_CAPABILITY_EXCLUSIVE) { if ($this->isAcquired) { return true; } $this->filePointer = fopen($this->filePath, ‘c’); if ($this->filePointer === false) { throw new LockAcquireException(‘Lock file could not be opened’, 1294586099); } GeneralUtility::fixPermissions($this->filePath); $operation = $mode & self::LOCK_CAPABILITY_EXCLUSIVE ? LOCK_EX : LOCK_SH; if ($mode & self::LOCK_CAPABILITY_NOBLOCK) { $operation |= LOCK_NB; } $wouldBlock = 0; $this->isAcquired = flock($this->filePointer, $operation, $wouldBlock); if (!$this->isAcquired) { // Make sure to cleanup any dangling resources for this process/thread, which are not needed any longer fclose($this->filePointer); } if ($mode & self::LOCK_CAPABILITY_NOBLOCK && !$this->isAcquired && $wouldBlock) { throw new LockAcquireWouldBlockException(‘Failed to acquire lock because the request would block.’, 1428700748); } return $this->isAcquired; }
We register it on four different istances on new relic. Do you have any hints to investage?
We already deleted typo3temp/var/locks/ f and flush the caches without results.
The problem started this morning 10:15 am on every machine.
Best Regards,
