EPICS Home EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

Format page
for printing


Search Tech-talk
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  <2005>  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  <2005>  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>
Subject: Re: CA gateway failure
From: Andrew Johnson <[email protected]>
To: Jeff Hill <[email protected]>
Cc: "'tech_talk'" <[email protected]>
Date: Tue, 22 Mar 2005 13:20:46 -0600
Jeff Hill wrote: 

This message is relevant to a CA gateway failure reported by Rolf
Keitel (Mantis Entry 113). The symptom observed was a corrupt
value written through the CA gateway when it is under a heavy
client induced write through load. The bug has been isolated to
the portable CA server. An incoming payload for a CA put was byte
swapped twice when an IO operation was restarted due to heavy
client loads.

I have committed a fix to CVS. This fix should appear first in
EPICS R3.14.7.

Actually in R3.14.8, since R3.14.7 was released last December. I'm not aware of any current plans to release R3.14.8 anytime soon.

It will be important to *not* enable writes through your gateway
until you receive a patch for this bug.

Jeff - if this fix can be isolated into a patch file, I can make that accessible through the Known Problems page for R3.14.7. I have just added the above report to that page, which already has links to some other patch files.

- Andrew
--
Podiabombastic: The tendency to shoot oneself in the foot.
Replies:
Re: CA gateway failure Ernest L. Williams Jr.
References:
CA gateway failure Jeff Hill
Navigate by Date:
Prev: Re: Support for room temperature and humidity sensors Maren Purves
Next: RE: Support for room temperature and humidity sensors Wayne Dahl
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  <2005>  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: CA gateway failure Jeff Hill
Next: Re: CA gateway failure Ernest L. Williams Jr.
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  <2005>  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 02 Sep 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·