Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Thu, 16 Oct 2008 11:17:55 -0600

PS: The casw utility can be used to observe the beacon anomalies as they are
detected by the CA client library.

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Shepherd, EL (Emma)
> Sent: Thursday, October 16, 2008 9:39 AM
> To: [email protected]
> Subject: Inter-IOC link problems
> 
> Hi all,
> 
> We still seem to suffer quite a bit from problems with database links
> between IOCs, particularly when a gateway is involved.  For some reason
> the links can become disconnected and a reboot is usually necessary to
> get them working again.  I have just had an opportunity to do some
> diagnosis on one such problem and found a clue in the CA beacon
> hashtable part of the dbcar report.  The entry for the gateway
> (172.23.106.35) is 'undefined', although the gateway itself seems to be
> working just fine and I can use caget through the gateway as normal.
> 
> Any ideas what could cause this to happen, or how to fix it when it
> does?  None of the tasks are suspended, CPU usage is low and everything
> else looks fine.
> 
> CA beacon hash entry for 172.23.106.32:5064 with period estimate
> 15.000521
>         beacon number 168436, on THU OCT 16 2008 14:27:46
> CA beacon hash entry for 172.23.106.35:5064 <no period estimate>
>         beacon number 0, on <undefined>
> CA beacon hash entry for 172.23.106.97:5064 with period estimate
> 14.988265
>         beacon number 76356, on THU OCT 16 2008 14:27:52
> CA beacon hash entry for 172.23.106.96:5064 with period estimate
> 14.988637
>         beacon number 39491, on THU OCT 16 2008 14:27:53
> CA beacon hash entry for 172.23.106.98:5064 with period estimate
> 14.980477
>         beacon number 58989, on THU OCT 16 2008 14:27:47
> CA beacon hash entry for 172.23.106.102:5064 with period estimate
> 14.990867
>         beacon number 39993, on THU OCT 16 2008 14:27:53
> CA beacon hash entry for 172.23.106.32:5064 with period estimate
> 15.000521
>         beacon number 168436, on THU OCT 16 2008 14:27:46
> CA beacon hash entry for 172.23.106.35:5064 <no period estimate>
>         beacon number 0, on <undefined>
> CA beacon hash entry for 172.23.106.97:5064 with period estimate
> 14.988265
>         beacon number 76356, on THU OCT 16 2008 14:27:52
> CA beacon hash entry for 172.23.106.96:5064 with period estimate
> 14.988637
>         beacon number 39491, on THU OCT 16 2008 14:27:53
> CA beacon hash entry for 172.23.106.98:5064 with period estimate
> 14.980477
>         beacon number 58989, on THU OCT 16 2008 14:27:47
> CA beacon hash entry for 172.23.106.102:5064 with period estimate
> 14.990867
>         beacon number 39993, on THU OCT 16 2008 14:27:53
> entries per bucket: mean = 0.011719 std dev = 0.107617 max = 1
> 
> 
> Thanks in advance....
> 
> Emma
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> 
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System