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Subject: Re: caget apparent timeout
From: D Peter Siddons <[email protected]>
To: Mark Rivers <[email protected]>
Cc: "[email protected]" <[email protected]>
Date: Fri, 28 Jun 2013 10:37:57 -0400
Ahhh! I bet that's it. My simple crossovers-cable connection doesn't see any nameservers. I'll see if I can find a way to provide one.
Pete.

On 06/28/2013 03:45 AM, Mark Rivers wrote:
The problem I was having, and its resolution, is discussed in this tech-talk thread:

http://www.aps.anl.gov/epics/tech-talk/2013/msg00836.php

Mark


________________________________________
From: [email protected] [[email protected]] on behalf of Mark Rivers [[email protected]]
Sent: Thursday, June 27, 2013 6:21 PM
To: D Peter Siddons; [email protected]
Subject: RE: caget apparent timeout

That sounds like a problem I had recently.  I tracked it down to a misconfigured DNS server that was not resolving the reverse DNS lookup, i.e. IP number to IP name.

Mark


________________________________________
From: [email protected] [[email protected]] on behalf of D Peter Siddons [[email protected]]
Sent: Thursday, June 27, 2013 4:14 PM
To: [email protected]
Subject: Re: caget apparent timeout

Hi Andrew,

EPICS 3.14.12.2
Ubuntu 12.04.2

Pete.

On 06/27/2013 01:13 PM, Andrew Johnson wrote:
Hi Peter,

On 2013-06-27 D Peter Siddons wrote:
Occasionally, I need to check or change a PV, for which I use the
caget and caput command-line utilities. The operation (put or get) is
executed immediately, but then the PC waits for several seconds before
the cursor is returned. Does anyone know what is causing this? It feels
like a network timeout, but all I have is a PC and an IOC with a
crossover cable between. Anyone know the fix?
What version of EPICS were your caget/caput programs built against, and what
is the Linux version they're running on?  We used to see delays like this at
process shutdown while the atexit() routines were being run, but they were
cleaned up quite a few releases ago.

- Andrew
--
D. Peter Siddons
Detector Development Group Leader
Bldg. 535B
Photon Sciences Directorate,
Brookhaven National Laboratory
Upton, NY 11973

email: [email protected]
Phone: (631) 344-2738.


--
D. Peter Siddons
Detector Development Group Leader
Bldg. 535B
Photon Sciences Directorate,
Brookhaven National Laboratory
Upton, NY 11973

email: [email protected]
Phone: (631) 344-2738


Replies:
Re: caget apparent timeout Andrew Johnson
References:
caget apparent timeout D Peter Siddons
Re: caget apparent timeout Andrew Johnson
Re: caget apparent timeout D Peter Siddons
RE: caget apparent timeout Mark Rivers
RE: caget apparent timeout Mark Rivers

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