Open Microscopy Environment

When updating our OMERO from version 5.0.2 to 5.0.5, I realized that JVM options previously configured in OMERO_HOME/etc/grid/templates.xml apparently have been integrated now into the general config file since I can no longer see them in "templates.xml"

E.g., for the BlitzTemplate, we had altered:
- Xmx2048M
- MaxPermSize=256M

I now put those into the general config file as:
- omero.jvmcfg.heap_size=2g
- omero.jvmcfg.perm_gen=256M

Is this correct? Are they now configured generally and no longer per server-template?
Additionally, in 5.0.2 we had increased "Xmx1024M" in the PixelDataTemplate server-options to allow for larger file uploads. Is this obsolete now? Or where should I put it instead?

Thanks a lot, regards,
-Rainer

Hi Rainer,

you are absolutely correct. The management of the JVM memory settings has been modified as part of the 5.0.3 release. The memory settings should now be modified like other server properties via bin/omero config set and retained under config.xml. This should hopefully simplify the OMERO.server upgrade as well as the migration to new hardware.

Generally, the documentation for the new memory settings is available under this section of the OMERO5 documentation.

The management of the memory settings should now be using a PercentStrategy by default where the percent of memory for each service can be configured via:

Code: Select all

$ bin/omero config set omero.jvmcfg.percent.<service> <percent>


Alternatively, you can rollback to a ManualStrategy and configure the memory settings of each service explicitly.

Note that for each configuration modification, you can always review the generated memory settings using:

Code: Select all

$ bin/omero admin jvmcfg


Please let us know if anything is unclear in the documentation,
Sebastien

Thanks a lot for the clarification.
I missed this part in the documentation. But, most likely I did not carefully enough looked for it

Thanks & regards,
-Rainer