Re: Fast stream-device IOC suddenly disconnects

["Zimoch, Dirk via Tech-talk" <tech-talk@aps.anl.gov>]

Hello Abdalla,

I have run your protocol file and databases with a simulated server now for
several days, first locally on the same host, then over the network. I found no
problems. Both settings worked for a week without disconnect.
Also when I finally stopped the simulated server, I got the error message:
VAN SR-DI-VAN:Read: device VAN 0 disconnected
You reported you got no error message.

So, I cannot reproduce your issue. I suspect the problem originates not on the 
software side but on the hardware side. Your device seems not to disconnect but
simply stops sending any data.

Unfortunately I cannot think of anything more I can test or do for you apart
from wishing you good luck hunting down the problem.

Dirk



On Sun, 2025-09-28 at 11:50 +0000, Abdalla Ahmad wrote:
> Hello Dirk
>  
> I have attached the protocol files as well as two databases, the IOC first reads the raw data and then process a group of PVs sequentially as seen by the chain of forward-links. When the issue happens, the first PV in the chain “:Raw$(CH)” is frozen.
>  
> Best Regards,
> Abdalla Al-Dalleh
> Control Engineer
> SESAME
>  
> From: Zimoch, Dirk <dirk.zimoch@psi.ch> 
> Sent: Sunday, September 28, 2025 2:38 PM
> To: Abdalla Ahmad <Abdalla.Ahmad@sesame.org.jo>
> Cc: tech-talk@aps.anl.gov
> Subject: Re: Fast stream-device IOC suddenly disconnects
>  
> Hello Abdalla
>  
> Please provide records and protocol file. Can you reproduce this with a simulated device that you can provide as well?
> 
> Dirk
> 
> 
> > Am 28.09.2025 um 13:08 schrieb Abdalla Ahmad via Tech-talk <tech-talk@aps.anl.gov>:
> > 
> > 
> > Hi
> >  
> > We have a device streaming data at 200 Hz controlled with stream device, parses the streamed data and writes to corresponding PVs. The problem is that every day or two, the readings freeze. At first I had to restart the IOC but I noticed that the IOC does not show any error so I re-connect the asyn port through writing 0 to the CNCT field and it worked. The st.cmd file has the port configured:
> >  
> > drvAsynIPPortConfigure(“PORT”, “ip-address:port-number”, 0, 0, 0)
> >  
> > What could be the issue here? I am using EPICS base 7.0.9 and latest version of all modules.
> >  
> > Best Regards,
> > Abdalla Al-Dalleh
> > Control Engineer
> > SESAME
> >