Windows clock is running faster after starting jboss service

[jkanefey]

System details:

IBM eServer x3500

Intel Xeon X5450 3.00GHz

4GB RAM

Win2008 Server Standard SP2 (32Bit)

JBoss: 4.0.5.ga

Problem:

after starting the jboss server the system time starts to run faster. This causes Tardis (time synch via NTP) to do clock resets every minute. The time drift increases with the amount of war files in the deploy folder (up to ~500ms every minute). After stopping the jboss service the windows time is running with normal speed and Tardis has nothing to do.

Because the system is a realtime system this causes a lot of trouble.

Has anyone seen similar problems when running jboss?

with best regards

DerKSler

[dimitris]

Never heard something similar, but this most probably has nothing to do with JBoss per se, it looks like a problem of the Operating System. I.e. you have a process (the JVM) that consumes many resources in terms of CPU, Memory and File I/O (at least in the initial stages) and that somehow makes the systrem clock run faster? What JVM you are using?

[jkanefey]

We found the problem. It was a bug in JVM.

solution: add the JVM param '-XX:+ForceTimeHighResolution'