[ome-devel] Omero server performance issue

Luca Lianas luca.lianas at crs4.it
Wed Aug 5 15:06:28 BST 2009


Sorry, i forgot the attachment...


2009/8/5 Luca Lianas <luca.lianas at crs4.it>

> I belong to the biomedical reserch group at CRS4, a research centre in
> Italy; we are currently using omero in several projects and we are running
> some performance tests during these days.
> We noticed that the server has low performances when loading a large amount
> of data (I tried to load the meta-informations for 50.000 4-channel images).
> I did a smaller test loading 1000 images using a python script and it took
> 1 minute and 42 seconds to load the data (as said before, I only wrote the
> meta-data of the images into the database, the real pixels are stored into a
> HDFS file system). I used the compiled version of Omero downloaded from the
> website and with default configuration. Omero runs on a Linux server (Fedora
> core 11) with a dual opteron processor (248 model) and 4GB of RAM.
> I'm wondering what is the problem and if there are some hints to improve
> the performances on the server. Any help is appreciated.
>
> Please see the script I'm using, as per attachment (maybe is the script
> itself my problem).
>
> Thanks for you attention
>
> Luca
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