Open Microscopy Environment

Hi,

I would like to correctly adjust the performances on a dedicated OMERO server on Centos 6.5 with 32 Go. I read the documentation (http://www.openmicroscopy.org/site/supp ... mance.html). However, some points are not clear for me. The default configuration givet 3 blitz process :
Domero.name=Blitz-0 -Xmx5042m, XX:MaxPermSize=1g
Domero.name=Indexer-0 -Xmx3361m, -XX:MaxPermSize=1g
Domero.name=PixelData-0 -Xmx5042m, -XX:MaxPermSize=1g

Should I allocate the total memory to the server :
bin/omero config set omero.jvmcfg.system_memory 32000

And set the maximum system memory seen by an OMERO to 32 Go
bin/omero config set omero.jvmcfg.max_system_memory 32000

Or I should reserve some space for the system.

Thanks

Philippe

If you physically have 32GB of memory on the system, you will definitely need to keep some in reserve for other processes. Setting `system_memory` will result in:

Code: Select all

$ bin/omero config set omero.jvmcfg.system_memory 32000
$ bin/omero admin jvmcfg
JVM Settings:
============
blitz=-Xmx4800m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})
indexer=-Xmx3200m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})
pixeldata=-Xmx4800m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})
repository=-Xmx3200m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})


You can then use the "percent" values to bump the components:

Code: Select all

$ bin/omero config set omero.jvmcfg.percent.blitz 20
$ bin/omero admin jvmcfg
JVM Settings:
============
blitz=-Xmx6400m -XX:MaxPermSize=1g # Settings({'system_memory': '32000', 'percent': '20'})
indexer=-Xmx3200m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})
pixeldata=-Xmx4800m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})
repository=-Xmx3200m -XX:MaxPermSize=1g # Settings({'system_memory': '32000'})


Alternatively, you can simply set the heap as you see fit:

Code: Select all

$ bin/omero config set omero.jvmcfg.percent.blitz  # unset
$ bin/omero config set omero.jvmcfg.system_memory   # unset
$ bin/omero config set omero.jvmcfg.heap_size.blitz 10000
$ bin/omero admin jvmcfg
JVM Settings:
============
blitz=-Xmx10000m -XX:MaxPermSize=1g # Settings({'heap_size': '10000'})
indexer=-Xmx2523m -XX:MaxPermSize=1g
pixeldata=-Xmx3784m -XX:MaxPermSize=1g
repository=-Xmx2523m -XX:MaxPermSize=1g


Once you're happy with the results, you'll need to restart the server.

Cheers,
~Josh