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Subject: Fwd: pvget is timing out
From: Mark Rivers via Tech-talk <tech-talk@aps.anl.gov>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Sat, 23 Mar 2019 14:47:35 +0000
Forgot to cc tech-talk

Sent from my iPhone

Begin forwarded message:

From: Mark Rivers <rivers@cars.uchicago.edu<mailto:rivers@cars.uchicago.edu>>
Date: March 23, 2019 at 9:30:17 AM CDT
To: "Ivashkevych, Oksana" <oksana@bnl.gov<mailto:oksana@bnl.gov>>
Subject: Re: pvget is timing out

Do
pvget -h
to get help.

pvget defaults to using pvAccess protocol. That can only read normal IOC pvs if your IOC is running qsrv or equivalent.

To use pvget to use Channel Access do

pvget -p ca pvname

Example:
corvette:~>pvget -p ca 13IDA:m1
13IDA:m1 -0.25

Mark



Sent from my iPhone

On Mar 23, 2019, at 8:31 AM, Ivashkevych, Oksana via Tech-talk <tech-talk@aps.anl.gov<mailto:tech-talk@aps.anl.gov>> wrote:


Hello,

I have built latest epics-base branch 7.0 and R.7.0.2.1 on Windows 7 and CentOS 4.4.7.(tested both).  I cloned with - - recursive option. When I am using caget(), it works, pvget() doesn't. It doesn't even print me an error message when I don't specify a PV. Behaves identical on both systems. When I specify a PV, request times out.

On this CentOS system I have only base built and nothing running
det@xf11bm-pilatus800k:~/epics/epics-base/bin/linux-x86_64> ./caget
No pv name specified. ('caget -h' for help.)
det@xf11bm-pilatus800k:~/epics/epics-base/bin/linux-x86_64> ./pvget
det@xf11bm-pilatus800k:~/epics/epics-base/bin/linux-x86_64>



On this Windows 7 I have bunch of modules built and my new driver and IOC, which theoretically could be a contributing factor, but I don't think so.

C:\epics\epics-base>bin\windows-x64-static\pvget.exe

//prints empty line

C:\epics\epics-base>bin\windows-x64-static\caget.exe

No pv name specified. ('caget -h' for help.)

C:\epics\epics-base>git branch

* (HEAD detached at R7.0.2.1)

  7.0

C:\epics\epics-base>

C:\epics\epics-base\bin\windows-x64-static>caget XF11ID-ES{elveFlowOB1}:elveFlow:Pres1

XF11ID-ES{elveFlowOB1}:elveFlow:Pres1 22.3389

C:\epics\epics-base\bin\windows-x64-static>pvget XF11ID-ES{elveFlowOB1}:elveFlow:Pres1

Timeout

XF11ID-ES{elveFlowOB1}:elveFlow:Pres1

C:\epics\epics-base\bin\windows-x64-static>



I have another system with Debian 7.

On this Debian 7 I have bunch of ADProsilica  and ADPilatus iocs running, built with base 7.0.1. At least pvget() responds with the correct complaint, though  times out with a PV.
oksana@xf11bm-ioc1:/epics/distrib/epicsBundle-R-7-0-1+deb7u1-x86_64/epics-base/bin/linux-x86_64$ ./pvget
No pv name(s) specified. ('pvget -h' for help.)
oksana@xf11bm-ioc1:/epics/distrib/epicsBundle-R-7-0-1+deb7u1-x86_64/epics-base/bin/linux-x86_64$ ./pvget XF:11BMA-BI{FS:1-Cam:1}cam1:AcquireTime
Timeout
oksana@xf11bm-ioc1:/epics/distrib/epicsBundle-R-7-0-1+deb7u1-x86_64/epics-base/bin/linux-x86_64$ ./caget XF:11BMA-BI{FS:1-Cam:1}cam1:AcquireTime
XF:11BMA-BI{FS:1-Cam:1}cam1:AcquireTime 1
oksana@xf11bm-ioc1:/epics/distrib/epicsBundle-R-7-0-1+deb7u1-x86_64/epics-base/bin/linux-x86_64$



There is one system where pvget() does work. One year ago I built from core/master on Debian 8. This branch is closed now.  On this machine I have one ADprosilica and one ADPointGrey IOC running with this base. There are other IOCs, but they use Debian distribution.
oksana@xf11id-m1:/opt/epics/ADepics7/epics-base/bin/linux-x86_64$ ./pvget XF:MOBILE-BI{Mir:1}cam1:AcquireTime
XF:MOBILE-BI{Mir:1}cam1:AcquireTime 0.3
oksana@xf11id-m1:/opt/epics/ADepics7/epics-base/bin/linux-x86_64$ ./caget XF:MOBILE-BI{Mir:1}cam1:AcquireTime
XF:MOBILE-BI{Mir:1}cam1:AcquireTime 0.3
oksana@xf11id-m1:/opt/epics/ADepics7/epics-base/bin/linux-x86_64$ git branch
* core/master
oksana@xf11id-m1:/opt/epics/ADepics7/epics-base/bin/linux-x86_64$

What I could be missing? Why pvget() does not work for me?

Thanks,

Oksana







References:
pvget is timing out Ivashkevych, Oksana via Tech-talk

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