Re: No more CA connections? R3.14.7, 3.14.8.2, CAJ

[Kay-Uwe Kasemir <kasemirk@ornl.gov>]

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