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<== Date ==> <== Thread ==>
Subject: Re: weird behaviour of SNL test program running on Soft IOC on LINUX
From: "Oleg Makarov" <[email protected]>
To: <[email protected]>
Cc: "Stepanov, Sergey" <[email protected]>, EPICS tech-talk <[email protected]>
Date: Tue, 17 Mar 2009 10:15:18 -0500
Pete:
 
here is a tarball to test.
you may need to edit configure/RELEASE file if EPICS_BASE and SNCSEQ on your mashine are different from
EPICS_BASE=/usr/local/epics/base
SNCSEQ=/usr/local/epics/snc
Also, for this test you will need a couple EPICS string PVs in the other IOC on the local network. In my case I used
23d:XY:my2:StrCmd
23d:XY:my2:StrRsp
in the VxWorks IOC with PMAC controller.
We observed weird behaviour of the SNL test program with EPICS releases 3.14.9 and 3.14.10 and with SNL releases 2.0.11 and 2.0.12.
 
To run the test:
make
cd iocBoot/my_ioc
./st.cmd
seq snc_my_test,"mydev=<PV prefix>"
 
Regards,
Oleg
 
----- Original Message -----
From: "Pete Jemian" <[email protected]>
To: "Oleg Makarov" <[email protected]>
Cc: "J. Lewis Muir" <[email protected]>; "Stepanov, Sergey" <[email protected]>; "EPICS tech-talk" <[email protected]>
Sent: Monday, March 16, 2009 4:50 PM
Subject: Re: weird behaviour of SNL test program running on Soft IOC on LINUX

>
> Oleg:
>
> I'd like the tarball as well to test.  I see Sergey's Support Request
> Case HD12639 on this topic.
>
> Pete
>
> J. Lewis Muir wrote:
>> On 3/16/09 4:08 PM, Oleg Makarov wrote:
>>  
>>> Hi Mark,
>>> 
>>> I tried the test with this fix. The problem is not resolved by
>>> epicsThreadSleep code change in the osdThread.c.
>>> 
>>> CA requests are not being send out  as they arise, some buffering of the
>>> requests occurs to make network communication more efficient. If you
>>> look at the camonitor output, it shows a 3-second period, exactly as
>>> expected.
>>> 
>>> Are there way to force CA requests to go out as they arise, with no
>>> buffering?
>>>    
>>
>> Hi, Oleg.
>>
>> pvFlush() will flush the SEQ PV layer, but maybe that's not what you're
>> asking about.
>>
>> You can also do a synchronous put:
>>
>>   pvPut(str_cmd, SYNC);
>>
>> But still, I don't understand why str_rsp would ever contain one of the
>> commands from str_cmd (e.g. "I522") like your output shows, unless
>> something is messed up with what's happening in and beyond "{dev}StrCmd"
>> and "{dev}StrRsp".
>>
>> Lewis
>>  
>
> --
> ----------------------------------------------------------
>  Pete R. Jemian, Ph.D.                <[email protected]>
>  Beam line Controls and Data Acquisition, Group Leader
>  Advanced Photon Source,   Argonne National Laboratory
>  Argonne, IL  60439                   630 - 252 - 3189
> -----------------------------------------------------------
>     Education is the one thing for which people
>        are willing to pay yet not receive.
> -----------------------------------------------------------
>
>
>

Attachment: my_test.tgz
Description: Binary data

References:
weird behaviour of SNL test program running on Soft IOC on LINUX Oleg Makarov
RE: weird behaviour of SNL test program running on Soft IOC on LINUX Mark Rivers
Re: weird behaviour of SNL test program running on Soft IOC on LINUX Oleg Makarov
Re: weird behaviour of SNL test program running on Soft IOC on LINUX J. Lewis Muir
Re: weird behaviour of SNL test program running on Soft IOC on LINUX Pete Jemian
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