Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  <19992000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020  Index 1994  1995  1996  1997  1998  <19992000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020 
<== Date ==> <== Thread ==>

Subject: Re: Slow booting ioc
From: Andrew Johnson <anj@aps.anl.gov>
To: Jeff Hill <johill@lanl.gov>
Cc: "'Garrett D. Rinehart'" <rinehart@aps.anl.gov>, "mrk@aps.anl.gov" <mrk@aps.anl.gov>, "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Thu, 21 Jan 1999 14:48:57 -0600
Jeff Hill wrote:
> 
> In the past long boot delays have been observed when an IOC comes up and reuses
> the same IOC side dynamically assigned TCP port that it was using in the past. In this situation
> some IP kernels on the server side detect out of order TCP/IP sequence numbers but will
> not disconnect until a long time out has expired. I don't know why changing the version of EPICS
> would have any impact on this. Apparently this behavior varies with the version and vendor
> of the IP kernel.

In this circumstance though the long delay seems to be on access to
every file, and I thought the symptoms Jeff described only occurred once
at startup (I may be mistaken though).

Garrett - are you booting using rsh or ftp?  If rsh, check that the
.cshrc file isn't taking a long time to execute - every time vxWorks
wants a file, it has to start a new shell on the host.

- Andrew

-- 
  New country, new job, new address, new .signature; same old Andrew
Johnson

References:
RE: Slow booting ioc Jeff Hill

Navigate by Date:
Prev: RE: Slow booting ioc Jeff Hill
Next: RE: Slow booting ioc Jeff Hill
Index: 1994  1995  1996  1997  1998  <19992000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020 
Navigate by Thread:
Prev: RE: Slow booting ioc Jeff Hill
Next: RE: Slow booting ioc Jeff Hill
Index: 1994  1995  1996  1997  1998  <19992000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  2018  2019  2020 
ANJ, 10 Aug 2010 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·