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<== Date ==> <== Thread ==>

Subject: Re: R3.13.0beta2
From: kerstien@luke.atdiv.lanl.gov (Deb Kerstiens)
To: tech-talk@aps.anl.gov, wbrown@csg.lbl.gov
Date: Thu, 10 Oct 96 15:51:53 MDT
Bill writes:
> 
> 
> I got base built, and managed to build extensions against it.  It all seems
> to works, but I've noticed something unusual.
> 
> I'm using a slight modification of the examples database that was included
> in the release.  (the only modification is to increase the range of values
> generated by the calc record)  I've got a little dm (v2.2) screen with 3
> monitors of different types looking at the aiExample record.  The calc
> record is scanning 1/second and is forward linked to the ai record.
> 
> On the dm screen I would normally expect to see the value change once/second.
> What I'm seeing is that frequently an update won't happen for 3 or 4 seconds.
> When it does happen it jumps to the (apparently) correct number.
> 
> This is on a sun4 environment, SPARCstation 5, ioc is mv167/8mb, 25MHz.
> AFAIK the network is lightly loaded.
> 
> Has anyone seen anything like this.  I could swear that before (on older
> releases) I've always seen a nice smooth update rate when watching a changing
> pv.  'Tis a puzzlement.
> 
> -bill
> 
Did the same dm screen work as expected under your previous release of EPICS?
There was a dm release in there somewhere that had the type of problem you
describe.  We should probably verify that before we start examining anything
in R3.13.0beta2. Let me know, and we'll go from there if it turns out to be 
a dm-related problem.


deb

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Deb Kerstiens		dkerstiens@lanl.gov
Phone			(505)667-3396
LANL AOT-8,MSH820	PO Box 1663, Los Alamos, NM. 87545 
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