Hi Ceki,

Thanks for the quick response.  Attached is the xml file with the configuration.

-greg

On Mon, Apr 11, 2016 at 12:48 PM, Ceki Gulcu <ceki@qos.ch> wrote:

Can you please post your configuration file as well?

On 4/11/2016 19:59, Greg Nitro wrote:

Hi,

We are using Logback 1.1.3, and observed through jstack that quite a few
threads were blocked in OutputStreamAppender.subAppend waiting to obtain
the lock.

This is a Play Framework app running in a dockerized environment,
configured to log to STDOUT and papertrail.

Stack trace:

"New I/O worker #23" #75 prio=5 os_prio=0 tid=0x00007f6fc9764000
nid=0xaa waiting for monitor entry [0x00007f6edd3e7000]
    java.lang.Thread.State: BLOCKED (on object monitor)
at
ch.qos.logback.core.OutputStreamAppender.subAppend(OutputStreamAppender.java:211)
- waiting to lock <0x00000000ab0f8f50> (a
ch.qos.logback.core.spi.LogbackLock)
at
ch.qos.logback.core.OutputStreamAppender.append(OutputStreamAppender.java:103)
at
ch.qos.logback.core.UnsynchronizedAppenderBase.doAppend(UnsynchronizedAppenderBase.java:88)
at
ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:48)
at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:273)
at ch.qos.logback.classic.Logger.callAppenders(Logger.java:260)
at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:442)
at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:396)
at ch.qos.logback.classic.Logger.info

<http://ch.qos.logback.classic.Logger.info>(Logger.java:600)
at play.api.LoggerLike$class.info <http://class.info>(Logger.scala:93)
at play.api.Logger$.info(Logger.scala:167)

Any suggestions on what may be going on here?

Thanks
-greg


_______________________________________________
logback-user mailing list
logback-user@qos.ch
http://mailman.qos.ch/mailman/listinfo/logback-user

_______________________________________________
logback-user mailing list
logback-user@qos.ch
http://mailman.qos.ch/mailman/listinfo/logback-user