I've been using valgrind/callgrind to gather performance data:
<http://valgrind.org/docs/manual/cl-manual.html>
There's a very nice GUI tool for viewing the results:
<http://kcachegrind.sourceforge.net/html/Home.html>
These are all available as packages for Debian/Ubuntu (the flavor of
Linux we use for soft IOCs).
On 9/10/2012 5:17 PM, Mark Rivers wrote:
Folks,
I have an EPICS IOC application that is taking a lot of CPU time and I want to figure out where it is spending its time. The IOC is running on Linux, and it seems like the Linux "gprof" tool should do what I want.
I added the following lines to my application Makefile, and also changed CONFIG to STATIC_BUILD=YES.
USR_CPPFLAGS_Linux += -pg
USR_CFLAGS_Linux += -pg
USR_LDFLAGS_Linux += -pg
The application creates the gmon.out file as expected. The problem is that the output of gprof seems to have the number of calls to each function correctly, but does not have execution times.
corvette:quadEM/iocBoot/iocTest>gprof -b ../../bin/linux-x86/quadEMTestApp gmon.out | more
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls Ts/call Ts/call name
100.00 0.01 0.01 yyerror
0.00 0.01 0.00 25739421 0.00 0.00 getAddr
0.00 0.01 0.00 11866294 0.00 0.00 paramList::getParameter(int)
0.00 0.01 0.00 7586090 0.00 0.00 paramVal::isDefined()
0.00 0.01 0.00 3706973 0.00 0.00 getTraceMask
0.00 0.01 0.00 3403295 0.00 0.00 paramVal::getStatus()
0.00 0.01 0.00 2237527 0.00 0.00 paramList::getInteger(int, int*)
0.00 0.01 0.00 2237526 0.00 0.00 paramVal::getInteger()
0.00 0.01 0.00 2235123 0.00 0.00 interruptEnd
0.00 0.01 0.00 2235122 0.00 0.00 interruptStart
0.00 0.01 0.00 2143477 0.00 0.00 paramVal::hasValueChanged()
0.00 0.01 0.00 2143477 0.00 0.00 paramList::registerParameterChange(paramVal*, int)
0.00 0.01 0.00 2136839 0.00 0.00 paramVal::resetValueChanged()
0.00 0.01 0.00 2136838 0.00 0.00 paramList::setFlag(int)
0.00 0.01 0.00 2136837 0.00 0.00 paramVal::setValueChanged()
0.00 0.01 0.00 2136836 0.00 0.00 paramVal::setDefined(bool)
0.00 0.01 0.00 1169154 0.00 0.00 asynPortDriver::getIntegerParam(int, int, int*)
0.00 0.01 0.00 1071776 0.00 0.00 paramVal::setInteger(int)
0.00 0.01 0.00 1071776 0.00 0.00 paramList::setInteger(int, int)
0.00 0.01 0.00 1071775 0.00 0.00 asynPortDriver::setIntegerParam(int, int, int)
0.00 0.01 0.00 1071721 0.00 0.00 asynPortDriver::callParamCallbacks(int, int)
0.00 0.01 0.00 1071719 0.00 0.00 paramList::callCallbacks(int)
0.00 0.01 0.00 1071701 0.00 0.00 asynPortDriver::setDoubleParam(int, int, double)
0.00 0.01 0.00 1071701 0.00 0.00 paramVal::setDouble(double)
0.00 0.01 0.00 1071700 0.00 0.00 paramList::setDouble(int, double)
0.00 0.01 0.00 1071673 0.00 0.00 asynPortDriver::callParamCallbacks(int)
0.00 0.01 0.00 1068372 0.00 0.00 paramList::int32Callback(int, int)
0.00 0.01 0.00 1068362 0.00 0.00 paramVal::getDouble()
0.00 0.01 0.00 1068362 0.00 0.00 paramList::getDouble(int, double*)
0.00 0.01 0.00 1068356 0.00 0.00 paramList::float64Callback(int, int)
0.00 0.01 0.00 1068349 0.00 0.00 interruptCallbackAverage
0.00 0.01 0.00 389732 0.00 0.00 asynPortDriver::getIntegerParam(int, int*)
0.00 0.01 0.00 97846 0.00 0.00 createAsynUser
0.00 0.01 0.00 97724 0.00 0.00 queueRequest
0.00 0.01 0.00 97706 0.00 0.00 duplicateAsynUser
0.00 0.01 0.00 97705 0.00 0.00 disconnect
0.00 0.01 0.00 97682 0.00 0.00 freeAsynUser
0.00 0.01 0.00 97679 0.00 0.00 lockPort
0.00 0.01 0.00 97676 0.00 0.00 asynPortDriver::lock()
0.00 0.01 0.00 97676 0.00 0.00 asynPortDriver::unlock()
0.00 0.01 0.00 97675 0.00 0.00 unlockPort
0.00 0.01 0.00 97667 0.00 0.00 lockPortCallback
0.00 0.01 0.00 97570 0.00 0.00 readIt
0.00 0.01 0.00 97444 0.00 0.00 readIt
0.00 0.01 0.00 97425 0.00 0.00 asynPortDriver::getParamStatus(int, int, asynStatus*)
0.00 0.01 0.00 97425 0.00 0.00 asynStatus asynPortDriver::doCallbacksArray<int, asynInt32ArrayInterrupt>(int*, unsigned int, int, int, void*)
0.00 0.01 0.00 97425 0.00 0.00 asynPortDriver::doCallbacksInt32Array(int*, unsigned int, int, int)
0.00 0.01 0.00 97425 0.00 0.00 drvQuadEM::computePositions(int*)
0.00 0.01 0.00 97424 0.00 0.00 paramList::getStatus(int, asynStatus*)
0.00 0.01 0.00 10835 0.00 0.00 paramVal::nameEquals(char const*)
0.00 0.01 0.00 999 0.00 0.00 getPortName
0.00 0.01 0.00 988 0.00 0.00 readIt
0.00 0.01 0.00 988 0.00 0.00 readIt
0.00 0.01 0.00 970 0.00 0.00 callInterruptUsers
0.00 0.01 0.00 584 0.00 0.00 paramList::findParam(char const*, int*)
0.00 0.01 0.00 462 0.00 0.00 asynPortDriver::createParam(int, char const*, asynParamType, int*)
0.00 0.01 0.00 462 0.00 0.00 paramVal::paramVal(char const*, asynParamType)
0.00 0.01 0.00 462 0.00 0.00 paramVal::paramVal(char const*)
0.00 0.01 0.00 462 0.00 0.00 paramList::createParam(char const*, asynParamType, int*)
0.00 0.01 0.00 396 0.00 0.00 findInterface
0.00 0.01 0.00 371 0.00 0.00 processAiAverage
0.00 0.01 0.00 192 0.00 0.00 asynPortDriver::getAddress(asynUser*, int*)
0.00 0.01 0.00 184 0.00 0.00 memMalloc
0.00 0.01 0.00 158 0.00 0.00 connectDevice
0.00 0.01 0.00 144 0.00 0.00 flushIt
0.00 0.01 0.00 144 0.00 0.00 flushIt
0.00 0.01 0.00 144 0.00 0.00 flushIt
0.00 0.01 0.00 141 0.00 0.00 writeIt
0.00 0.01 0.00 141 0.00 0.00 writeIt
0.00 0.01 0.00 140 0.00 0.00 writeIt
0.00 0.01 0.00 128 0.00 0.00 writeRead
0.00 0.01 0.00 122 0.00 0.00 asynPortDriver::drvUserCreate(asynUser*, char const*, char const**, unsigned int*)
0.00 0.01 0.00 122 0.00 0.00 asynPortDriver::findParam(int, char const*, int*)
0.00 0.01 0.00 122 0.00 0.00 drvUserCreate
0.00 0.01 0.00 94 0.00 0.00 drvAHxxx::writeReadMeter()
0.00 0.01 0.00 85 0.00 0.00 asynPortDriver::setIntegerParam(int, int)
0.00 0.01 0.00 65 0.00 0.00 canBlock
0.00 0.01 0.00 65 0.00 0.00 parseLink
0.00 0.01 0.00 65 0.00 0.00 skipWhite
0.00 0.01 0.00 52 0.00 0.00 getCallbackValue
0.00 0.01 0.00 45 0.00 0.00 connect
0.00 0.01 0.00 45 0.00 0.00 initCommon
0.00 0.01 0.00 42 0.00 0.00 asynPortDriver::createParam(char const*, asynParamType, int*)
0.00 0.01 0.00 30 0.00 0.00 setInputEos
0.00 0.01 0.00 30 0.00 0.00 setInputEos
0.00 0.01 0.00 29 0.00 0.00 addInterruptUser
0.00 0.01 0.00 29 0.00 0.00 createInterruptNode
0.00 0.01 0.00 29 0.00 0.00 getInterruptPvt
0.00 0.01 0.00 28 0.00 0.00 drvAHxxx::setAcquire(int)
0.00 0.01 0.00 27 0.00 0.00 asynPortDriver::callParamCallbacks()
0.00 0.01 0.00 26 0.00 0.00 announceExceptionOccurred
...
Does anyone with gprof experience know why I am not getting the execution times in these functions?
Thanks,
Mark
--
John A. Priller | Phone : (517) 908-7375
MSU Cyclotron Laboratory | Fax : (517) 908-7126
640 S. Shaw Lane rm 1300D | Email : [email protected]
East Lansing, MI 48824 | Web : http://www.nscl.msu.edu/~priller/
- Replies:
- RE: How to profile an EPICS application on Linux Mark Rivers
- References:
- How to profile an EPICS application on Linux Mark Rivers
- Navigate by Date:
- Prev:
RE: GigE Vision & GeniCam standard SDK (areaDetector) Ahed Aladwan
- Next:
autosave R5-0 mooney
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
<2012>
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
RE: How to profile an EPICS application on Linux Malitsky, Nikolay D
- Next:
RE: How to profile an EPICS application on Linux Mark Rivers
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
<2012>
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
| 
·
Home
·
News
·
About
·
Base
·
Modules
·
Extensions
·
Distributions
·
Download
·