[ome-devel] Trouble with OMERO.Dropbox

[Niko Ehrenfeuchter]

Hi all,

we have noticed some odd behaviour on our OMERO server when using the 
DropBox import, that has been causing a lot of trouble in the last days:

As soon as a file gets copied to the DropBox share, inotify triggers 
1000 (one thousand) "Modified file event of type IN_MODIFY" log messages 
per second (var/log/MonitorServer.log), until the file transfer to the 
share has finished. This alone is already causing a load of about 35 to 
40 percent on one CPU (to be precise, that's the 
lib/python/fsServerMS.py process). Transferring multiple files at the 
same time makes this even worse, although it is scaling below linear. 
Fife concurrent transfers are completely saturating this process with a 
usage of 100% on one CPU.

Is this a misconfiguration on our side? I'd expect *one* "modify" 
notification per second should be enough to to the job, instead of one 
thousand, no?

Thanks a lot in advance for any help!
Enjoy your weekend!
~Niko
-- 
Niko Ehrenfeuchter | Image Analysis Specialist | Biozentrum, University 
of Basel | Klingelbergstr. 50/70 | CH-4056 Basel
Phone: +41 (61) 26 72673 | nikolaus.ehrenfeuchter at unibas.ch | 
www.biozentrum.unibas.ch | www.microscopynetwork.unibas.ch