 26 Jan 2009, Derek Escontrias, Forum, Question - ODB access from a custom page
|
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,
|
 27 Jan 2009, Suzannah Daviel, Forum, Question - ODB access from a custom page
|
At present the only documentation on the Javascript library is in this elog
e.g. Message 496 31 Jul 08
|
|
03 Oct 2023, Gennaro Tortone, Bug Report, Python midas.file_reader get_eor_odb_dump()
|
Hi,
|
|
16 Oct 2023, Ben Smith, Bug Report, Python midas.file_reader get_eor_odb_dump()
|
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().
|
05 Sep 2024, Jack Carlton, Forum, Python frontend rate limitations? 
|
I'm trying to get a sense of the rate limitations of a python frontend. I
understand this will vary from system to system.
|
|
05 Sep 2024, Ben Smith, Forum, Python frontend rate limitations?
|
> 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 |
|
05 Sep 2024, Jack Carlton, Forum, Python frontend rate limitations?
|
Thank you, this was very helpful.
|
|
05 Sep 2024, Stefan Ritt, Forum, Python frontend rate limitations?
|
> 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"
|
|
06 Sep 2024, Jack Carlton, Forum, Python frontend rate limitations?
|
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 |
|
11 Sep 2024, Konstantin Olchanski, Forum, Python frontend rate limitations?
|
> 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
|
|
11 Sep 2024, Konstantin Olchanski, Forum, Python frontend rate limitations?
|
>
> poll(INT count) {
> for (i=0 ; i<count ; i++)
|
|
11 Sep 2024, Konstantin Olchanski, Forum, Python frontend rate limitations?
|
> > I'm trying to get a sense of the rate limitations of a python frontend.
forgot one more:
|
|
27 Sep 2024, Ben Smith, Forum, Python frontend rate limitations?
|
> 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.
|
|
10 Mar 2022, Gennaro Tortone, Bug Report, Python ODB watch
|
Hi,
I have an issue with ODB watch on MIDAS Python library;
|
|
16 Mar 2022, Ben Smith, Bug Report, Python ODB watch
|
> It seems that the second write operation "overlaps" the first one...
Hi Gennaro,
|
|
21 Mar 2022, Stefan Ritt, Bug Report, Python ODB watch
|
What you describe is a well-known problem with the ODB. At PSI we have similar issues. There are
two approaches to solve it:
|
|
03 Sep 2009, Exaos Lee, Bug Report, Prompt problem about odbedit
|
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. |
|
03 Sep 2009, Stefan Ritt, Bug Report, Prompt problem about odbedit
|
> 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.
|
|
28 Aug 2018, Lukas Gerritzen, Forum, Problems with virtual history events
|
Hi,
I am trying to set up virtual history events following
https://midas.triumf.ca/MidasWiki/index.php/History_System#Virtual_History_Event
|
|
28 Aug 2018, Konstantin Olchanski, Forum, Problems with virtual history events
|
Hi, what you try should have worked. Perhaps your symlink is wrong and should say "/External/..." (with a leading slash). The "links period" would have
worked same as equipment/common/history period - as a rate limiter.
|