[fpc-devel] wiki slow

[Werner Pamler]

Trying to update a wiki article I noticed that the wiki is extremely 
slow and responds to saving or previewin an edited article with the 
error message shown below. I've been told that the wiki is maintained by 
the fpc team. Could somebody please take a look?

---------------------------

Sorry! This site is experiencing technical difficulties.

Try waiting a few minutes and reloading.

(Cannot access the database)

Backtrace:

#0
/srv/www/lazaruswiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(972): 

Wikimedia\Rdbms\LoadBalancer->reportConnectionError()
#1
/srv/www/lazaruswiki/includes/libs/rdbms/loadbalancer/LoadBalancer.php(944): 

Wikimedia\Rdbms\LoadBalancer->getServerConnection()
#2 /srv/www/lazaruswiki/includes/libs/rdbms/database/DBConnRef.php(95):
Wikimedia\Rdbms\LoadBalancer->getConnectionInternal()
#3 /srv/www/lazaruswiki/includes/libs/rdbms/database/DBConnRef.php(101):
Wikimedia\Rdbms\DBConnRef->ensureConnection()
#4 /srv/www/lazaruswiki/includes/libs/rdbms/database/DBConnRef.php(707):
Wikimedia\Rdbms\DBConnRef->__call()
#5 /srv/www/lazaruswiki/includes/libs/rdbms/database/Database.php(3154):
Wikimedia\Rdbms\DBConnRef->getSessionLagStatus()
#6 /srv/www/lazaruswiki/includes/user/User.php(527):
Wikimedia\Rdbms\Database::getCacheSetOptions()
#7
/srv/www/lazaruswiki/includes/libs/objectcache/wancache/WANObjectCache.php(1689): 

User->{closure}()
#8
/srv/www/lazaruswiki/includes/libs/objectcache/wancache/WANObjectCache.php(1522): 

WANObjectCache->fetchOrRegenerate()
#9 /srv/www/lazaruswiki/includes/user/User.php(560):
WANObjectCache->getWithSetCallback()
#10 /srv/www/lazaruswiki/includes/user/User.php(471): User->loadFromCache()
#11 /srv/www/lazaruswiki/includes/user/User.php(404): User->loadFromId()
#12 /srv/www/lazaruswiki/includes/session/UserInfo.php(92): User->load()
#13
/srv/www/lazaruswiki/includes/session/CookieSessionProvider.php(131):
MediaWiki\Session\UserInfo::newFromId()
#14 /srv/www/lazaruswiki/includes/session/SessionManager.php(537):
MediaWiki\Session\CookieSessionProvider->provideSessionInfo()
#15 /srv/www/lazaruswiki/includes/session/SessionManager.php(243):
MediaWiki\Session\SessionManager->getSessionInfoForRequest()
#16 /srv/www/lazaruswiki/includes/WebRequest.php(841):
MediaWiki\Session\SessionManager->getSessionForRequest()
#17 /srv/www/lazaruswiki/includes/session/SessionManager.php(164):
WebRequest->getSession()
#18 /srv/www/lazaruswiki/includes/Setup.php(448):
MediaWiki\Session\SessionManager::getGlobalSession()
#19 /srv/www/lazaruswiki/includes/WebStart.php(86):
require_once('/srv/www/lazaru...')
#20 /srv/www/lazaruswiki/index.php(44): require('/srv/www/lazaru...')
#21 {main}