bad_gateway.log

/var/log/php5-fpm.log:
[10-Aug-2015 09:28:40] WARNING: [pool t3-emero] child 6697, script '/var/www/t3-emero-6/htdocs/www//typo3/mod.php' (request: "GET /typo3/mod.php") execution timed out (1801.173856 sec), terminating
[10-Aug-2015 09:28:40] WARNING: [pool t3-emero] child 6697 exited on signal 15 (SIGTERM) after 1803.423456 seconds from start
[10-Aug-2015 09:28:40] NOTICE: [pool t3-emero] child 7592 started
[10-Aug-2015 09:46:27] WARNING: [pool t3-emero] child 8275, script '/var/www/t3-emero-6/htdocs/www//typo3/mod.php' (request: "GET /typo3/mod.php") executing too slow (12.101922 sec), logging
[10-Aug-2015 09:46:27] NOTICE: child 8275 stopped for tracing
[10-Aug-2015 09:46:27] NOTICE: about to trace 8275
[10-Aug-2015 09:46:27] ERROR: failed to ptrace(PEEKDATA) pid 8275: Input/output error (5)
[10-Aug-2015 09:46:27] NOTICE: finished trace of 8275

/var/log/php-fpm/domain-slow.log:
10-Aug-2015 09:46:27]  [pool domain] pid 8275
script_filename = /var/www/domain/htdocs/www//typo3/mod.php
[0x00007f9253013668] isFile() /var/www/domain/typo3_src-6.2.14/typo3/sysext/core/Classes/Resource/Driver/LocalDriver.php:485
[0x00007f9253013458] retrieveFileAndFoldersInPath() /var/www/domain/typo3_src-6.2.14/typo3/sysext/core/Classes/Resource/Driver/LocalDriver.php:360
[0x00007f92530132c0] getDirectoryItemList() /var/www/domain/typo3_src-6.2.14/typo3/sysext/core/Classes/Resource/Driver/LocalDriver.php:456
[0x00007f92530130f8] getFoldersInFolder() /var/www/domain/typo3_src-6.2.14/typo3/sysext/core/Classes/Resource/ResourceStorage.php:2031
[0x00007f9253012f58] getFoldersInFolder() /var/www/domain/typo3_src-6.2.14/typo3/sysext/core/Classes/Resource/Folder.php:252
[0x00007f9253012e28] getSubfolders() /var/www/domain/typo3_src-6.2.14/typo3/sysext/backend/Classes/Tree/View/FolderTreeView.php:522
[0x00007f9253012c00] getNumberOfSubfolders() /var/www/domain/typo3_src-6.2.14/typo3/sysext/backend/Classes/Tree/View/FolderTreeView.php:367
[0x00007f9253012988] getFolderTree() /var/www/domain/typo3_src-6.2.14/typo3/sysext/backend/Classes/Tree/View/FolderTreeView.php:363
[0x00007f9253012710] getFolderTree() /var/www/domain/typo3_src-6.2.14/typo3/sysext/backend/Classes/Tree/View/FolderTreeView.php:363
[0x00007f92530124c0] getFolderTree() /var/www/domain/typo3_src-6.2.14/typo3/sysext/backend/Classes/Tree/View/FolderTreeView.php:315
[0x00007f9253012368] getBrowseableTreeForStorage() /var/www/domain/typo3_src-6.2.14/typo3/sysext/backend/Classes/Tree/View/FolderTreeView.php:226
[0x00007f92530120e8] getBrowsableTree() /var/www/domain/typo3_src-6.2.14/typo3/sysext/recordlist/Classes/Browser/ElementBrowser.php:1460
[0x00007f9253011f08] main_file() /var/www/domain/typo3_src-6.2.14/typo3/sysext/recordlist/Classes/Controller/ElementBrowserController.php:150
[0x00007f9253011dd0] main() /var/www/domain/typo3_src-6.2.14/typo3/sysext/recordlist/Modules/Wizards/ElementBrowserWizard/index.php:21
[0x00007f9253011c80] +++ dump failed