Exactly, that’s what I was alluding to with “the lack of swap probably doesn’t help” ;-). We should really configure VMs with a small amount of swap, it can save the kernel in tricky situations...
On Thu, 9 Nov 2017 01:47:08 -0800 Anil Vishnoi <[email protected]> wrote: > I suspect you might hit it again if you run it a bit longer because > of this > > [Thu Nov 2 05:58:08 2017] Free swap = 0kB > [Thu Nov 2 05:58:08 2017] Total swap = 0kB > > > On Thu, Nov 9, 2017 at 1:39 AM, Stephen Kitt <[email protected]> wrote: > > > On Thu, 9 Nov 2017 10:28:14 +0100 > > Robert Varga <[email protected]> wrote: > > > On 02/11/17 23:02, Luis Gomez wrote: > > > > 1) JVM does not kill itself, the OS does instead after the java > > > > process grows to 3.7G in a VM of 4G RAM (note Xmx is set to 2G > > > > but still the jvm goes far beyond that). > > > > > > Indicates this lies out side of heap -- check thread count. > > > > We verified separately that this is an OOM issue, but one detected > > by the kernel rather than by the JVM (the OOM killer kills the JVM, > > see > > https://jira.opendaylight.org/secure/attachment/14207/dmesg.log.txt > > for details; the number of threads wasn’t an issue here, but the > > lack of swap probably didn’t help). > > > > Upgrading to OpenJDK 8 patch 151 fixed the problem, it might have > > been related to one of the several memory usage bugs in 144 that > > were fixed in 151. It’s probably just moving the goalposts though > > since the problem was new — basically, I suspect we recently > > started using a little too much off-heap memory for some reason, > > and the upgrade to 151 reduces the JVM’s memory usage enough to > > make us fit in our VMs again. > > > > Regards, > > > > Stephen > > > > _______________________________________________ > > controller-dev mailing list > > [email protected] > > https://lists.opendaylight.org/mailman/listinfo/controller-dev > > > > > >
pgp6tyMap8SBf.pgp
Description: OpenPGP digital signature
_______________________________________________ controller-dev mailing list [email protected] https://lists.opendaylight.org/mailman/listinfo/controller-dev
