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<== Date ==> <== Thread ==>

Subject: Re: No more CA connections? R3.14.7, 3.14.8.2, CAJ
From: Kay-Uwe Kasemir <kasemirk@ornl.gov>
To: tech talk <tech-talk@aps.anl.gov>
Date: Tue, 25 Apr 2006 11:55:02 -0400
Hi:

Some new info about this issue...
The symptom: Everything on the IOC looks great,
but the IOC allows no new CA connections.
"casr" shows several existing CA connections,
and they in fact continue to work fine.

Additional suspicious fact:
A "caget some_pv" ...will print an error message after 2 seconds,
but then hang for a total of ~30 seconds.
And "casr" on the IOC will show a new connection,
even though caget never got a value.

This is the "casr 2" output for such a new connection that never returns a value to the client:

TCP 172.31.72.101:55622(ics-accl-srv1): User="kasemir", V4.11, 1 Channels, Priority=50
Task Id=0xe32580, Socket FD=54
Secs since last send 189.24, Secs since last receive 189.22
Unprocessed request bytes=0, Undelivered response bytes=48
State=up
372 bytes allocated
SCL_LLRF:FCM21d:AFF_Mode(0--)


Task trace for that IOC server thread:

scl-llrf-ioc21d> tt 0xe32580
1fa774 vxTaskEntry +68 : 1b60b48 ()
1b60bb8 epicsThreadPrivateGet+f8 : camsgtask ()
1a777f4 camsgtask +36c: camessage ()
1a7c750 camessage +320: 1a79df0 ()
1a79df0 casUserNameInitiatingCurrentThread+2404: asAddClient ()
1a88cf8 asAddClient +110: epicsMutexLock ()
1b57888 epicsMutexLock +24 : semTake ()
1f0c74 semTake +13c: semMTake ()

-Kay


Replies:
RE: No more CA connections? R3.14.7, 3.14.8.2, CAJ Jeff Hill
References:
No more CA connections? R3.14.7, 3.14.8.2, CAJ Kay-Uwe Kasemir

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