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Hi Paul
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<div class="">On 11 May 2016, at 16:31, Paul van Schayck <<a href="mailto:paul@vanschayck.nl" class="">paul@vanschayck.nl</a>> wrote:</div>
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Thanks for the help. I probably forgot to mention the crucial bit that<br class="">
I'm running OMERO 5.1.4. Could that be the biggest influence, looking<br class="">
at all the changes you've made to OMERO.web organization between 5.1<br class="">
and 5.2?<br class="">
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<div>YES! There were many changes to web, in particular data loading.</div>
<div>Also, bug making unnecessary calls to the server on each request, was fixed in 5.2.2 <a href="https://github.com/openmicroscopy/openmicroscopy/pull/4474" class="">https://github.com/openmicroscopy/openmicroscopy/pull/4474</a>.</div>
<div>Sorry about that.</div>
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<div class="">I've done some more testing as you proposed using `ab` and the P-TRE<br class="">
test image. Also setting public access to not use bSession.<br class="">
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$ ab -n 10 -c 1<br class="">
"<a href="http://omero.local/webclient/render_thumbnail/size/96/201/?server=1&bsession=ae766ef0-7520-4878-822c-419eb3faf6b8" class="">http://omero.local/webclient/render_thumbnail/size/96/201/?server=1&bsession=ae766ef0-7520-4878-822c-419eb3faf6b8</a>"<br class="">
Connection Times (ms)<br class="">
min mean[+/-sd] median max<br class="">
Connect: 1 1 0.1 1 1<br class="">
Processing: 268 319 18.6 323 338<br class="">
Waiting: 268 319 18.5 323 338<br class="">
Total: 269 320 18.5 324 338<br class="">
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$ ab -n 10 -c 1<br class="">
"<a href="http://nanoscopy.unimaas.nl/webclient/render_thumbnail/size/96/201/" class="">http://nanoscopy.unimaas.nl/webclient/render_thumbnail/size/96/201/</a>"<br class="">
Connection Times (ms)<br class="">
min mean[+/-sd] median max<br class="">
Connect: 1 1 0.1 1 1<br class="">
Processing: 391 412 11.2 415 420<br class="">
Waiting: 390 412 11.2 415 420<br class="">
Total: 391 412 11.2 416 421<br class="">
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As you can see, actually bSession is faster than (by about 100ms) than<br class="">
the public user. The render_thumbnail is about 100ms faster than the<br class="">
webclient/ index call I tested with yesterday. But overall, the 320 ms<br class="">
average is pretty far from the 100 to 150 you report.<br class="">
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I've attached the requested outputs. Note that the amount of errors in<br class="">
Blitz.log is most likely due to a lot of experimenting I've done in<br class="">
the past.<br class="">
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<div>Did you try to increase number of gunicorn workers by changing <tt class="descname">--workers</tt><tt class="descclassname"> WORKERS</tt>?</div>
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<div>Did you also try to tune nginx?</div>
<div>It may not make the biggest difference, but is still possible that tweaking worker_processes, worker_connections, worker_rlimit_nofile, using poll, etc. will speed it up.</div>
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<div>Did you try to deploy 5.2.3 on a similar VM to see if overal performance is better? </div>
<div>Alternatively, to free up resources you could deploy OMERO.web with nginx on a different VM then OMERO server. If you need any help with that let us know.</div>
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<div>Thanks</div>
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Ola</div>
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Software Engineer</div>
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Open Microscopy Environment</div>
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University of Dundee</div>
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<span style="font-size:10pt;">The University of Dundee is a registered Scottish Charity, No: SC015096</span>
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