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

Subject: Re: SNL seq-2.0.13 on Linux 64 bits: not all monitored PVs receive their first monitor event
From: Benjamin Franksen <[email protected]>
To: <[email protected]>
Date: Fri, 1 Jul 2011 09:58:14 +0200
Could you also post

- a dump of the epics the record (dbpr "record-name")
- the record type
- whether the record is on the same IOC as the state machine or not
- whether it is always the same PV that has the problem

Cheers
Ben

On Friday, July 01, 2011, Utzel Nadine wrote:
> Thanks for your answer. As commented by Pam, we have no access security
> on the IOCs and as it is a random problem, sometimes everything is just
> working fine! So when it is not the case, I can see something like that
> using SeqChanShow: #15 of 26:
> Channel name: "CTRL-MCOD-TCS:endTestGuard"
>   Unexpanded (assigned) name: "{MC}-TCS:endTestGuard"
>   Variable name: "endTestGuard"
>     address = 20762476 = 0x13ccf6c
>     type = short
>     count = 1
>   Value = 0
>   Monitor flag = 1
>     Monitored
>   Assigned
>   Connected
>   Get not completed or no get issued
>   Put not completed or no put issued
>   Status = 0
>   Severity = 0
>   Message =
>   Time stamp = <undefined>
> Next? (+/- skip count)
>
> As you can see, the variable is monitored, assigned and connected, but
> the Time stamp is undefined and the variable has not received its first
> monitor event.
>
> Cheers,
> Nadine
> -----Original Message-----
> From: Andrew Johnson [mailto:[email protected]]
> Sent: 30 June 2011 17:14
> To: [email protected]
> Cc: Utzel Nadine
> Subject: Re: SNL seq-2.0.13 on Linux 64 bits: not all monitored PVs
> receive their first monitor event
>
> Hi Nadine,
>
> On 2011-06-30 Utzel Nadine wrote:
> > Randomly in some of my state programs, I notice that not all the
> > monitored  PVs receive a first monitor event:
> >
> > numMonitoredChans 10 firstMonitorCount 9 assignCount 16
> > firstConnectCount
> >
> >  16 numMonitoredChans 20 firstMonitorCount 19 assignCount 26
> >
> > firstConnectCount 26
> >
> > As a consequence, with the option +c, the state machine stays in its
> > initial state, or with the option -c, it waits for an event flag that
> > is  never sent.
>
> If you want us to help you're going to have to investigate and post some
> more information about those channels that are not receiving a first
> monitor (use seqChanShow to do that).  I can think of at least one
> reason why this might happen — your sequencer program user & host
> doesn't have Access Security permission on the IOC to read those
> channels for example, although if your IOC is not configured to use
> Access Security then that wouldn't apply.
>
> - Andrew
> --
> Optimization is the process of taking something that works and replacing
> it with something that almost works, but costs less. -- Roger Needham


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References:
SNL seq-2.0.13 on Linux 64 bits: not all monitored PVs receive their first monitor event Utzel Nadine
Re: SNL seq-2.0.13 on Linux 64 bits: not all monitored PVs receive their first monitor event Andrew Johnson
RE: SNL seq-2.0.13 on Linux 64 bits: not all monitored PVs receive their first monitor event Utzel Nadine

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