kernel-packages team mailing list archive

[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1584471

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1584471

Title:
  Java threads produce OutOfMemoryError with 4.4.0-22 kernel

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hi all.

  I am running Ubuntu 16.04 (through regular updates and upgrades) on an
  HP DL380 with dual hex-core Xeon 3.47GHz cpus and 96GB RAM.

  I upgraded this system a week ago, and started getting Java
  OutOfMemoryErrors (unable to create new native thread) from Wowza
  Streaming Engine. I tried older versions of Java (7 and 6 oracle
  versions) and they improved it, but did not fix it.

  When I stopped the Wowza service from the command line, the service
  command would hang until I killed the java process.

  I booted my system into the 3.16.0-41 kernel that was still there, and
  everything works as it should (no more OutOfMemoryErrors). I have not
  tried the 3.16 kernel with Java 8 OpenJDK; it is still running on Java
  7.

  Did something change drastically with the thread modules between the
  3.16.0 kernel and the 4.4.0 kernel?

  Wowza starts Java with the -Xmx10000M option.

  One of the log entries for this error is:

  WARN    server  comment 2016-05-20      23:55:21        -       -
  -       --5405.152        -       -       -       -       -       -
  -       -       Unexpected exception.: java.lang.OutOfMemoryError:
  unable to create new native thread|at java.lang.Thread.start0(Native
  Method)|at java.lang.Thread.start(Thread.java:714)|at
  org.apache.mina.util.NewThreadExecutor.execute(NewThreadExecutor.java:34)|at
  org.apache.mina.transport.socket.nio.SocketIoProcessor.startupWorker(SocketIoProcessor.java:104)|at
  org.apache.mina.transport.socket.nio.SocketIoProcessor.addNew(SocketIoProcessor.java:83)|

  Thanks.
  Mike.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584471/+subscriptions