Confluence hanging intermittently, and not sure why? Edited

Hello

We are having problems with our Confluence test instance, at v 6.1.2, which we upgraded from v 5.4.4.

Whenever I restart confluence and login it hangs for around 10 minutes, and then completes the login. Then occassionaly, perhaps every few hours, this will happen again when I will click onto a particular page, or try a particular action.

In the atlassian-confluence.log file during the hang nothing is output. Then when Confluence starts working again this is output:

2017-08-02 14:07:51,468 WARN [http-nio-8443-exec-20] [confluence.util.profiling.DefaultActivityMonitor] close Exceeded the threshold of 60000 ms: ActivitySnapshot{startTime=1501678703676, threadId=192, threadName='http-nio-8443-exec-20', userId='alex.Perrin', type='web-request', summary='/display/URT/URLTEST+Home?src=spacemenu'}
 -- url: /display/URT/URLTEST+Home | traceId: be16d35b4795a2f2 | userName: alex.Perrin | referer: https://xxx.xxx.com/display/URT/URLTEST+Home

 

I took several thread dumps during this particular hang. That thread seems to be this one below, as taken from the thread dump. There are a couple of locked messages, but other than that I can't really decode what is happening, and whether this thread really is the culprit. I've attached all the logs from this particular episode, any help would be appreciated!

"http-nio-8443-exec-20" #192 daemon prio=5 os_prio=0 tid=0x00007f7824ccf800 nid=0x2146 runnable [0x00007f775f8e1000]
   java.lang.Thread.State: RUNNABLE
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
 - locked <0x00000007a8d41148> (a java.net.SocksSocketImpl)
 at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
 at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
 at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
 at java.net.Socket.connect(Socket.java:589)
 at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:337)
 at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:134)
 at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)
 at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380)
 at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
 at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
 at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
 at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
 at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
 at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
 at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107)
 at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
 at com.atlassian.gadgets.renderer.internal.http.HttpClientFetcher.fetch(HttpClientFetcher.java:87)
 at org.apache.shindig.gadgets.DefaultMessageBundleFactory.fetchBundle(

 

...

 


 (CoyoteAdapter.java:502)
 at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)
 at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1533)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1489)
 - locked <0x00000007b5e30f90> (a org.apache.tomcat.util.net.SecureNioChannel)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 at java.lang.Thread.run(Thread.java:748)

 

 

 

1 answer

Did you try running the log analyzer? 

Also look into synchrony, since it was introduced in 6.0.

Are there any add-ons that are incompatible?

Try clearing the plugins cache and restarting

https://confluence.atlassian.com/confkb/how-to-clear-confluence-plugins-cache-297664846.html

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