Re: Waveforms in Archiver Appliance

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 4/21/22 09:14, John Dobbins wrote:
> Michael ,
>
> It turned out to be the array size/EPICS_CA_MAX_ARRAY_BYTES.

Was this in the IOC or Archiver?

fyi. Base >= 3.16.1 doesn't use EPICS_CA_MAX_ARRAY_BYTES any more (by default).

https://github.com/epics-base/epics-base/blob/7.0/documentation/RELEASE_NOTES.md#epics_ca_max_array_bytes-is-optional


>    I was only putting 50 values in the array but NELM =2048. Reducing NELM fixed the problem.
>
> Also, thanks for the pointer to the policies info. I was wondering about that.
>
> John
>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> *From:* Michael Davidsaver <mdavidsaver at gmail.com>
> *Sent:* Thursday, April 21, 2022 12:07 PM
> *To:* John Dobbins <john.dobbins at cornell.edu>
> *Cc:* tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
> *Subject:* Re: Waveforms in Archiver Appliance
> On 4/21/22 06:47, John Dobbins via Tech-talk wrote:
> > All,
> >
> > Does the EPICS Archiver Appliance accept waveforms? The documentation suggests it does, but I was unable to add one (after initial sampling its status is 'not being archived').
>
> You may be running afoul of a policy condition.
>
> cf. the default policy.
>
> https://github.com/slacmshankar/epicsarchiverap/blob/master/src/sitespecific/slacdev/classpathfiles/policies.py <https://github.com/slacmshankar/epicsarchiverap/blob/master/src/sitespecific/slacdev/classpathfiles/policies.py>
>
>
> > Thanks,
> >
> > John Dobbins
> >
> > Research Support Specialist
> > Cornell High Energy Synchrotron Source
> > Cornell University
> >
> > www.chess.cornell.edu <http://www.chess.cornell.edu> <http://www.chess.cornell.edu <http://www.chess.cornell.edu>>