Hi,
Thanks for the reply.
I have tested this on the following Java version:
java version "1.7.0_21"
OpenJDK Runtime Environment (IcedTea 2.3.9) (7u21-2.3.9-0ubuntu0.12.04.1)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
On both the 64bit and 32bit version.
Hopefully it can help.
Robin
2013/6/8 Gene Cooperman <[email protected]>
> Hi Robin,
> Thanks very much for the bug report. It's true that we had not
> tested internally with Java performance testing on.
>
> > I have no idea which JVMs turn this flag on by default but I would
> suggest
> > a warning or something for users who want to checkpoint Java
> applications.
> You're absolutely right. We'll look at this problem and either enable
> DMTCP to automatically support this case, or to issue a warning.
>
> By the way, could you let us know which version of Java you're using?
> The following command should provide full information:
> bash -c 'java -showversion 2>&1 | head -4'
>
> Thanks very much for the bug report.
> - Gene
>
> On Fri, Jun 07, 2013 at 02:31:48PM +0200, robin staes wrote:
> > Hi,
> >
> > I have already send several mails involving a problem with checkpointing
> > Java.
> > Having tried to fix the problem I think to have found its origin.
> > Java uses an internal performance testing system through jvmstat and this
> > saves all kinds of data to hsperfdata folder in /tmp/.
> > DMTCP seems unable to handle these files.
> > As a solution, I have turned of the performance testing with
> > -XX:-UsePerfData.
> > Now checkpointing Java applications works again.
> > I have no idea which JVMs turn this flag on by default but I would
> suggest
> > a warning or something for users who want to checkpoint Java
> applications.
> >
> > Sincerely yours,
> >
> > Robin
>
> >
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>
--
Robin
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