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<== Date ==> <== Thread ==>
Subject: Re: areaDetector synchronization question
From: "Shen, Guobao via Tech-talk" <tech-talk at aps.anl.gov>
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Date: Wed, 17 Aug 2022 13:25:09 +0000

Second Ralph’s suggestion: using pvAccess would solve your issue since it includes all meta data you need in one structure.

Otherwise, removing the gateway does not really solve your fundamental problem.

The chance would rely on your network traffic.

 

Thanks,

Guobao

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Tech-Talk <tech-talk at aps.anl.gov>
Reply-To: Ralph Lange <ralph.lange at gmx.de>
Date: Wednesday, August 17, 2022 at 8:02 AM
To: Tech-Talk <tech-talk at aps.anl.gov>
Subject: Re: areaDetector synchronization question

 

On Wed, 17 Aug 2022 at 14:46, Jörn Dreyer via Tech-talk <tech-talk at aps.anl.gov> wrote:


If I read the unique id from both plugins and make sure the are the same, how
big is the chance that the data does not match if I read them in two threads
(thread 1: the  image, thread 2: the stats information)?

Would the situation improve if I can remove the gateway process?

 

The one thing that would remove the issue:

Use pvAccess, where the stats and the image are part of the same structure, and the client is guaranteed to get consistent updates.

If you are exporting into a different protocol anyway, the difference shouldn't be that much. In terms of being future-proof, it would be a big step forward.

 

Cheers,
~Ralph

 

References:
areaDetector synchronization question Jörn Dreyer via Tech-talk
Re: areaDetector synchronization question Ralph Lange via Tech-talk
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