[ome-devel] Trouble with OMERO.Dropbox

[Josh Moore]

Hi Niko,

always pleasant to hear from you upon a Friday evening...


On Fri, Jan 23, 2015 at 6:04 PM, Niko Ehrenfeuchter
<nikolaus.ehrenfeuchter at unibas.ch> wrote:
> 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),

Could you send or upload (QA) a zipped version of this log for us?
Also, what type of file(set) is this and how large?

Cheers,
~Josh.


> 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