Re: Problem reserving enough space for Java object heap since stretch upgrade
On Sat 01 Jul 2017 at 09:47:38 (-0400), Adam Rosi-Kessel wrote:
> I have been unable to execute Java with >=2048M memory allocation
> since upgrading to stretch. I've changed nothing in my configuration
> otherwise.
>
> I have plenty of RAM:
>
> # free
> total used free shared buff/cache
> available
> Mem: 5168396 3326140 245712 85320 1596544 1227812
> Swap: 2255616 259204 1996412
>
> # ulimit -v
> unlimited
What does # ulimit -H -v say?
> # java -Xmx2048M
> Error occurred during initialization of VM
> Could not reserve enough space for 2097152KB object heap
>
> # ls -l /etc/alternatives/java
> lrwxrwxrwx 1 root root 45 Jun 27 20:45 /etc/alternatives/java ->
> /usr/lib/jvm/java-8-openjdk-i386/jre/bin/java
>
> But the same problem occurs when I switch to other Java
> alternatives. (openjdk-8-jre version = 8u131-b11-2).
>
> Interestingly, if I set ulimit -v to something other than
> 'unlimited' but higher than the amount requested for the java
> process, it works:
>
> # ulimit -v 2097153
> # java -Xmx2048M
>
> (no errors)
>
> But shouldn't "unlimited" be higher than any arbitrary value I put
> there? Also, for Java programs that are run as daemons from
> /etc/init.d, I have been unable to figure out how to get the
> arbitrary ulimit -v setting to "stick".
>
> TIA for any suggestions for how to fix or troubleshoot.
>
Cheers,
David.
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