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<== Date ==> <== Thread ==>
Subject: Re: Generating metrics for IOC applications
From: Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
To: TZVETKOV Stephane <Stephane.TZVETKOV at cea.fr>
Cc: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Fri, 1 Mar 2024 18:38:25 +0100
Hi Stéphane,

Thanks a lot for your detailed explanations!
I know some of the tools (we're even using a few of them), but there were a lot of new ideas and pointers. Cool!

My interest in this case, however, is really focused on obsolescence management. Completely off-line, no running system needed.

We will have 170 separate EPICS applications and need to decide where to start our maintenance: updating OS version, updating EPICS Base, updating Device Supports, re-writing user-supplied code.
What I'm searching for is between simple record counts and static code analysis, for an EPICS application.

Intermediate metrics could be things like
  • total number of records
  • number of links between records
  • number of links connected to hardware
  • which hardware (list of device support modules needed)
  • number of calc/calcout records
  • number of subroutine records and number of lines of code connected to them
  • number of state machines and number of lines of SNL code they run
  • ...
And then some magic formulas that spit out some size, complexity and quality indices for each of the applications and - obviously - the number of man-months needed to bring them up to the "current" standard (whatever that is).

There will always be a lot of manually collected data, factors based on experience, and additional personal judgment necessary in such a planning process, that's very clear.
But I would like to get as much data as possible out of the applications themselves. To help the judgment and allow better comparison between applications. Base things on data.

Cheers,
~Ralph
Replies:
SV: Generating metrics for IOC applications Anders Lindh Olsson via Tech-talk
References:
Generating metrics for IOC applications Ralph Lange via Tech-talk
Re: Generating metrics for IOC applications TZVETKOV Stephane via Tech-talk
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