RE: warning: multiple interrupt callbacks between processing when running testAsynPortDriverApp

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

Hi Lin,

 

I cannot reproduce this problem.  Like you I am running asyn R4-44-2, with only the change you listed to the testAsynPortDriver.cpp source file:

 

diff --git a/testAsynPortDriverApp/src/testAsynPortDriver.cpp b/testAsynPortDriverApp/src/testAsynPortDriver.cpp

index 359c89a..fa4534a 100644

--- a/testAsynPortDriverApp/src/testAsynPortDriver.cpp

+++ b/testAsynPortDriverApp/src/testAsynPortDriver.cpp

@@ -99,7 +99,7 @@ testAsynPortDriver::testAsynPortDriver(const char *portName, int maxPoints)

 

     /* Set the initial values of some parameters */

     setIntegerParam(P_MaxPoints,         maxPoints);

-    setIntegerParam(P_Run,               0);

+    setIntegerParam(P_Run,               1);

     setIntegerParam(P_VertGainSelect,    10);

     setVertGain();

     setDoubleParam (P_VoltsPerDiv,       1.0);

 

I also set the TraceMask to 0x20.  I see this when the IOC boots:

 

corvette:asyn/iocBoot/ioctestAsynPortDriver>../../bin/linux-x86_64/testAsynPortDriver st.cmd

dbLoadDatabase("../../dbd/testAsynPortDriver.dbd")

testAsynPortDriver_registerRecordDeviceDriver(pdbbase)

# Turn on asynTraceFlow and asynTraceError for global trace, i.e. no connected asynUser.

#asynSetTraceMask("", 0, 17)

testAsynPortDriverConfigure("testAPD", 1000)

dbLoadRecords("../../db/testAsynPortDriver.db","P=testAPD:,R=scope1:,PORT=testAPD,ADDR=0,TIMEOUT=1,NPOINTS=1000")

dbLoadRecords("../../db/asynRecord.db","P=testAPD:,R=asyn1,PORT=testAPD,ADDR=0,OMAX=80,IMAX=80")

#asynSetTraceMask("testAPD",0,0xff)

asynSetTraceIOMask("testAPD",0,0x2)

iocInit()

Starting iocInit

############################################################################

## EPICS R7.0.7

## Rev. R7.0.7-dirty

## Rev. Date Git: 2022-09-07 13:50:35 -0500

############################################################################

cas WARNING: Configured TCP port was unavailable.

cas WARNING: Using dynamically assigned TCP port 34051,

cas WARNING: but now two or more servers share the same UDP port.

cas WARNING: Depending on your IP kernel this server may not be

cas WARNING: reachable with UDP unicast (a host's IP in EPICS_CA_ADDR_LIST)

iocRun: All initialization complete

epics>

 

I do not get any warning messages.

 

I have attached a screenshot showing the testAsynPortDriver.adl screen.  Note that the update time is 0.5 seconds and the waveform record has SCAN=I/O Intr.  This seems to be what you were using, because the warning messages were every 0.5 seconds and you seem to be using interrupt callbacks as well.

 

I am running on Centos 7, using base 7.0.7.  You are running a much older version of base, 3.14.12.5.  I don’t think that should cause this problem, but it is possible.  You can build your IOC with a new version of base, even if you are using an old version for medm.

 

Mark

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Wang, Lin via Tech-talk
Sent: Monday, May 22, 2023 3:49 AM
To: tech-talk at aps.anl.gov
Subject: warning: multiple interrupt callbacks between processing when running testAsynPortDriverApp

 

Dear all,

testAsynPortDriver is a pretty good example for learning basic usage of asynPortDriver, however I encountered a warning message that I do not understand when made some modifications and ran it.

 

The initial status of the digital scope simulator is "Stop", if I try to set the initial status to "Run" by changing Line 102 of https://github.com/epics-modules/asyn/blob/master/testAsynPortDriverApp/src/testAsynPortDriver.cpp 

from

setIntegerParam(P_Run,               0);

to 

setIntegerParam(P_Run,               1);

then make and add "asynSetTraceMask("testAPD", 0, 0x20)" to the end of st.cmd, the following warning will display continuously,

epics>
epics>
epics> 2023/05/22 01:05:14.319 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:14.819 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:15.320 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:15.820 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:16.320 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:16.820 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:17.321 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:17.821 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:18.322 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing
2023/05/22 01:05:18.822 testAPD:scope1:Waveform_RBV devAsynXXXArray::process, warning: multiple interrupt callbacks between processing

 

In order to install the old MEDM, the test environment is old as follows,

Debian 7 wheezy

base-3.14.12.5

asyn-R4-44-2

 

Any hint or suggestion is appreciated.

 

Thanks,

Lin

 

Attachment: testAsynPortDriver.png
Description: testAsynPortDriver.png