EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: RE: querying for sets of pvs in archived data
From: [email protected]
To: "Emmanuel Mayssat" <[email protected]>
Cc: "[email protected]" <[email protected]>
Date: Fri, 28 Jun 2013 10:25:58 -0700 (PDT)
Hi Emmanuel,

Thank you for your reply. I think there may be a difference though. I
believe that the SCR applications use snapshots taken at periodic
intervals in time? What I had in mind was something that places monitors
on the process variables and archives the values only when they change.
The queries I described would then be done on that recorded data.

MASAR does look like a nice program though.

Thank you,
Patrick

>
>> store and query data as I have described, but I am wondering if I am
>> reinventing the wheel. Does a tool such as this already exist?
>
> Yes.
> You are describing a feature of Save/Compare/Restore applications.
> SCR are also know as epics-backup application (i.e take a snapshot of a
> running machine, compare 2 snapshots, compare a snapshot with the running
> machine)
>
> You next question is where to get such a piece of software. Well...
> I am using SDDS save/compare/restore (very old)
> SCORE may have the described feature as well (used at SNS and SLAC)
>
> <Shameless plug for MASAR>
> I am currently looking at MASAR part of epics-4, which is straight forward
> to install, but still in development.
> For example, comparisons of 2 snapshots using the pyQt GUI is missing.
> A CSS GUI is also a work-in-progress.
> At this time, most of the development is at the GUI level
> So if you don't mind a text output (i.e. in a terminal), you can use MASAR
> with its python API and have something working by tonight.
> </Shameless plug for MASAR>
>
>
>
>



Replies:
Re: querying for sets of pvs in archived data Robert Soliday
References:
querying for sets of pvs in archived data pthomas
RE: querying for sets of pvs in archived data Emmanuel Mayssat

Navigate by Date:
Prev: RE: querying for sets of pvs in archived data Emmanuel Mayssat
Next: specifying network interface with pcaspy caServer Jameson Graef Rollins
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: querying for sets of pvs in archived data Emmanuel Mayssat
Next: Re: querying for sets of pvs in archived data Robert Soliday
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 20 Apr 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·