9.1.1 RC: Long time to open administrator page

Please help us by providing the following info. Before posting please also check the pinned "Known issues" threads and make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/

Steps to reproduce
1. Upgraded from 9.0.x to 9.1.0 and 9.1.1 RC
2. Log in
3. Open Administrator Page

Expected behaviour
Page should load as fast as the other ones.

Actual behaviour
It take forever to load the page. It shows up after a couple of minutes but still wainting for something.

Server configuration
Operating system: Ubuntu 16.04
Web server: Apache
Database: mysql
PHP version:
ownCloud version (see ownCloud admin page): 9.1.1 RC
Updated from an older ownCloud or fresh install: updated from 9.1.0
ownCloud log (data/owncloud.log, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808):
{"reqId":"VC1FcF0BfVFcc79lNUWy","remoteAddr":"192.168.1.218","app":"index","message":"Exception: {\"Exception\":\"OC\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\/var\\/www\\/owncloud\\/lib\\/private\\/legacy\\/app.php(119): OC_App::loadApp('dav')\n#1 \\/var\\/www\\/owncloud\\/lib\\/private\\/legacy\\/util.php(135): OC_App::loadApps(Array)\n#2 \\/var\\/www\\/owncloud\\/lib\\/base.php(890): OC_Util::setupFS()\n#3 \\/var\\/www\\/owncloud\\/index.php(39): OC::handleRequest()\n#4 {main}\",\"File\":\"\\/var\\/www\\/owncloud\\/lib\\/private\\/legacy\\/app.php\",\"Line\":147}","level":3,"time":"2016-08-24T05:52:09+00:00","method":"GET","url":"\/index.php\/core\/js\/oc.js?v=8017b0bd05b37ab6dbf39a9190ac521e","user":"--"}
{"reqId":"A8+UJvfRoAWPR8tjiLBW","remoteAddr":"192.168.1.218","app":"core","message":"starting upgrade from 9.1.0.15 to 9.1.1.0","level":0,"time":"2016-08-24T05:52:11+00:00","method":"GET","url":"\/core\/ajax\/update.php?requesttoken=KCkICjc%2FMQAOQH88ZT91djYwAw4GAWhMM3wnOVs%2BER0%3D%3AnbQpBQHbW38p4PACTCOLalP9T5lXnqETuX%2BkBFTa9Do%3D","user":"--"}
{"reqId":"mRrN2zE6Pqpro9fRuLbm","remoteAddr":"192.168.1.49","app":"PHP","message":"Uncaught Error: Access to undeclared static property: OC\Files\Filesystem::$normalizedPathCache in \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php:772\nStack trace:\n#0 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(2039): OC\Files\Filesystem::normalizePath('\/tobiasbausch@g...')\n#1 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(1151): OC\Files\View->unlockFile('\/MyFriends\/Komm...', 1)\n#2 [internal function]: OC\Files\View->OC\Files\{closure}()\n#3 \/var\/www\/owncloud\/3rdparty\/icewind\/streams\/src\/CallbackWrapper.php(109): call_user_func(Object(Closure))\n#4 [internal function]: Icewind\Streams\CallbackWrapper->stream_close()\n#5 {main}\n thrown at \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php#772","level":3,"time":"2016-08-29T10:31:44+00:00","method":"PROPFIND","url":"\/remote.php\/webdav\/","user":"jstaub@cfc.ch"}
{"reqId":"AqQ1OZ5pz1s9Wc12oevw","remoteAddr":"192.168.1.49","app":"PHP","message":"Uncaught Error: Access to undeclared static property: OC\Files\Filesystem::$normalizedPathCache in \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php:772\nStack trace:\n#0 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(2039): OC\Files\Filesystem::normalizePath('\/tobiasbausch@g...')\n#1 \/var\/www\/owncloud\/lib\/private\/Files\/View.php(1151): OC\Files\View->unlockFile('\/MyFriends\/Komm...', 1)\n#2 [internal function]: OC\Files\View->OC\Files\{closure}()\n#3 \/var\/www\/owncloud\/3rdparty\/icewind\/streams\/src\/CallbackWrapper.php(109): call_user_func(Object(Closure))\n#4 [internal function]: Icewind\Streams\CallbackWrapper->stream_close()\n#5 {main}\n thrown at \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php#772","level":3,"time":"2016-08-29T10:33:14+00:00","method":"PROPFIND","url":"\/remote.php\/webdav\/","user":"jstaub@cfc.ch"}

Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):

Integrity status for oC9+

Login as admin user into your ownCloud and access
http://example.com/index.php/settings/integrity/failed
No errors have been found.

Hi,

if that didn't happen with 9.1.0 but started with 9.1.1 RC please report a new bug to:

https://github.com/owncloud/core/issues

ok, done. not shure when it started....

Thanks. As a reference: