Experimental Physics and
Industrial Control System

Hello Mark and Mark,

The image size is only around 3.1KB per frame (1028 bins with 24 bits
each).

I am only running 1 NDStardardArray plugin and it seems to be fine.
There are no dropped frames that could be observed by the plugin and it
is configured with blocking "Disable". The same behavior is observed
with all plugins disabled.

It Is the array count itself on the IOC that shows the discrepancy
between the numbers of frames requested and received.

On the detector side, I can use the same settings to acquire data within
its own web interface application. The aplication is capable of
acquiring up to 1000 fps with no loss. So I believe it should be between
the detector and the IOC.

Any suggestions?

Nilson




On 15.02.2018 18:31, Mark Rivers wrote:

Hi Nilson,

When you say it is dropping frames, can you be more explicit?  Can you tell where the frames are being dropped, i.e. between the detector and the IOC, or in an IOC plugin?

What plugins are you running in this IOC?

Are they configured with blocking=Enabled or Disabled?

What queue size are the plugins using?

Mark

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of Nilson Pereira
Sent: Thursday, February 15, 2018 10:50 AM
To: [email protected]
Subject: Mythen M1K - Low fps

Hello everyone,

I started to work with a Dectris strip Detector Mythen2 X 1K and I am
using the Mythen module from AreaDetector. This detector can reach
1000fps, however the IOC starts to drop frames with frequencies higher
than 100fps.

Has anyone experience this limitation with this type of detector?
To avoid network issues, I have a straight network connection between
the PC and detector.

I also noticed that the IOC only requests 1 frame at a time when it
could (according to the manual) requests multiples frames to avoid
communication overheads. Has anyone tried implementing this?

My versions:
- Ubuntu 16.04
- EPICS base 3.15.5
- ADCore 2-6
- ADMythen 2-0



________________________________

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH

Mitglied der Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren e.V.

Aufsichtsrat: Vorsitzender Dr. Karl Eugen Huthmacher, stv. Vorsitzende Dr. Jutta Koch-
Unterseher
Geschäftsführung: Prof. Dr. Bernd Rech (kommissarisch), Thomas Frederking

Sitz Berlin, AG Charlottenburg, 89 HRB 5583

Postadresse:
Hahn-Meitner-Platz 1
D-14109 Berlin

http://www.helmholtz-berlin.de

________________________________

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH

Mitglied der Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren e.V.

Aufsichtsrat: Vorsitzender Dr. Karl Eugen Huthmacher, stv. Vorsitzende Dr. Jutta Koch-Unterseher
Geschäftsführung: Prof. Dr. Bernd Rech (kommissarisch), Thomas Frederking

Sitz Berlin, AG Charlottenburg, 89 HRB 5583

Postadresse:
Hahn-Meitner-Platz 1
D-14109 Berlin

http://www.helmholtz-berlin.de

Replies:

RE: Mythen M1K - Low fps Mark Rivers

References:

Mythen M1K - Low fps Nilson Pereira

RE: Mythen M1K - Low fps Mark Rivers

Navigate by Date:

Prev: RE: PMAC asyn autoconnect issue Mark Rivers

Next: RE: Mythen M1K - Low fps Mark Rivers

Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  <2018>  2019  2020  2021  2022  2023  2024 

Navigate by Thread:

Prev: RE: Mythen M1K - Low fps Mark Rivers

Next: RE: Mythen M1K - Low fps Mark Rivers

Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  <2018>  2019  2020  2021  2022  2023  2024