Intermittent very slow performance

Intermittent very slow performance.

Getting couple of exceptions too:

-- url: /wiki/plugins/macrobrowser/browse-macros.action | userName: amit rithoria | referer: https://learn.adobe.com/wiki/display/Flex/Getting+Started | action: browse-macros

2012-10-17 23:37:55,912 ERROR http-10350-56 atlassian.confluence.servlet.ConfluenceServletDispatcher sendError Could not execute action

-- url: /wiki/pages/diffpagesbyversion.action | userName: anonymous

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

javax.servlet.error.exception: java.lang.IllegalArgumentException: Resource is not serializable: Key=com.atlassian.confluence.diff.DiffKey@70798027, Value=com.atlassian.util.concurrent.SettableFutu

re@9bf1da

javax.servlet.error.request_uri: /wiki/pages/diffpagesbyversion.action

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

2012-10-18 00:01:00,458 ERROR scheduler_Worker-8 atlassian.core.task.AbstractErrorQueuedTaskQueue handleException com.atlassian.mail.MailException: javax.mail.MessagingException: Unknown SMTP h

ost: no.mailhost.adobe.com;

nested exception is:

java.net.UnknownHostException: no.mailhost.adobe.com

1 answer

Were you trying to compare page versions when you encountered the slow performance? If yes, increasing the timeout value might help with this task: https://confluence.atlassian.com/display/CONFKB/Comparing+Page+Versions+Fails+Due+to+Timeout+Exceeded

I cant offer an answer, but I would say perhaps you have a DNS issue, or at least, a broken mailbox config, is your mailserver really 'no.mailhost.adobe.com'?

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