 26 Jan 2009, Derek Escontrias, Forum, Question - ODB access from a custom page
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Hi, I am looking for a way to mutate ODB values from a custom page. I have been
using the edit attribute for the 'odb' tag, but for some things it would be nice
if a form can handle the change. I have seen references to ODBSet on the forums,
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 27 Jan 2009, Suzannah Daviel, Forum, Question - ODB access from a custom page
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At present the only documentation on the Javascript library is in this elog
e.g. Message 496 31 Jul 08
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03 Oct 2023, Gennaro Tortone, Bug Report, Python midas.file_reader get_eor_odb_dump()
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Hi,
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16 Oct 2023, Ben Smith, Bug Report, Python midas.file_reader get_eor_odb_dump()
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Thanks for the bug report Gennaro!
I've fixed the code so that we'll now find the end-of-run ODB dump even if the user is already at the end of the file when they call get_eor_odb_dump().
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05 Sep 2024, Jack Carlton, Forum, Python frontend rate limitations? 
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I'm trying to get a sense of the rate limitations of a python frontend. I
understand this will vary from system to system.
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05 Sep 2024, Ben Smith, Forum, Python frontend rate limitations?
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> What limits the rate that poll_func is called in a python frontend?
First the general advice: if you reduce the "period" of your equipment, then your function will get called more frequently. You can set it to 0 and we'll |
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05 Sep 2024, Jack Carlton, Forum, Python frontend rate limitations?
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Thank you, this was very helpful.
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05 Sep 2024, Stefan Ritt, Forum, Python frontend rate limitations?
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> First the general advice: if you reduce the "period" of your equipment, then your function will get called more frequently.
> You can set it to 0 and we'll call it as often as possible. You can set this in the ODB at "/Equipment/Python Data Simulator/Common/Period"
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06 Sep 2024, Jack Carlton, Forum, Python frontend rate limitations?
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Thanks for the responses, they were very helpful.
>First the general advice: if you reduce the "period" of your equipment, then your function will get called more frequently. You can set it to 0 and we'll |
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11 Sep 2024, Konstantin Olchanski, Forum, Python frontend rate limitations?
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> I'm trying to get a sense of the rate limitations of a python frontend.
1) python is single-threaded, for ultimate performance, a MIDAS frontend (or any DAQ
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11 Sep 2024, Konstantin Olchanski, Forum, Python frontend rate limitations?
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>
> poll(INT count) {
> for (i=0 ; i<count ; i++)
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11 Sep 2024, Konstantin Olchanski, Forum, Python frontend rate limitations?
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> > I'm trying to get a sense of the rate limitations of a python frontend.
forgot one more:
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27 Sep 2024, Ben Smith, Forum, Python frontend rate limitations?
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> in your case the limitation is likely that you're sending 1.25MB per event and we have a lot of data marshalling to do between the python and C++ layer.
>
> I'll add it to my to-do list to investigate improving the performance of medium-to-large events in the python code.
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10 Mar 2022, Gennaro Tortone, Bug Report, Python ODB watch
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Hi,
I have an issue with ODB watch on MIDAS Python library;
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16 Mar 2022, Ben Smith, Bug Report, Python ODB watch
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> It seems that the second write operation "overlaps" the first one...
Hi Gennaro,
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21 Mar 2022, Stefan Ritt, Bug Report, Python ODB watch
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What you describe is a well-known problem with the ODB. At PSI we have similar issues. There are
two approaches to solve it:
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13 Jul 2025, Zaher Salman, Info, PySequencer
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As many of you already know Ben introduced the new PySequencer that allows running python scripts from MIDAS. In the last couple of month we have been working
on integrating it into the MIDAS pages. We think that it is now ready for general testing.
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03 Sep 2009, Exaos Lee, Bug Report, Prompt problem about odbedit
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I tried to use odbedit to set the "/System/Prompt" to "%h:%e:%s %p> " and got a
problem: pressing "Return" doesn't work any more. But "[%h:%e:%s]%p> " works fine.
Please see the attachment. |
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03 Sep 2009, Stefan Ritt, Bug Report, Prompt problem about odbedit
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> I tried to use odbedit to set the "/System/Prompt" to "%h:%e:%s %p> " and got a
> problem: pressing "Return" doesn't work any more. But "[%h:%e:%s]%p> " works fine.
> Please see the attachment.
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28 Aug 2018, Lukas Gerritzen, Forum, Problems with virtual history events
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Hi,
I am trying to set up virtual history events following
https://midas.triumf.ca/MidasWiki/index.php/History_System#Virtual_History_Event
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