From: Jim M. <jim...@wb...> - 2007-04-19 19:20:12
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Hello, I just installed Fedora Core 6 on a Celeron 1.7 machine I have. I am attempting to just test oprofile out and get comfortable with it. I followed the directions in the "Getting Started" doc opcontrol --no-vmlinux --callgraph=15 --image=all opcontrol --start ; <my app> ; opcontrol --stop I see "Profiler running", my app runs then I see "Stopping profiling" but when I try to do a opreport I get the following: opreport error: No sample file found: try running opcontrol --dump or specify a session containing sample files running 'opcontrol --dump' when my app is running, or after it is stopped results in no output. opcontrol: oprofile 0.9.2 compiled on Nov 3 2006 13:49:56 opreport: oprofile 0.9.2 compiled on Nov 3 2006 13:49:56 This was installed as an option when installing Fedora. My application makes extensive use of shared objects (the actual executable is a simple app which calls into a shared object. That shared object calls other shared objects that are either implicitly linked or dlopen'd). Hope I gave enough info for you to help. Thanks -Jim |
From: William C. <wc...@re...> - 2007-04-20 14:10:13
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Jim Marshall wrote: > Hello, > I just installed Fedora Core 6 on a Celeron 1.7 machine I have. I am > attempting to just test oprofile out and get comfortable with it. I > followed the directions in the "Getting Started" doc > > opcontrol --no-vmlinux --callgraph=15 --image=all > > opcontrol --start ; <my app> ; opcontrol --stop > > I see "Profiler running", my app runs then I see "Stopping profiling" > > but when I try to do a opreport I get the following: > > opreport error: No sample file found: try running opcontrol --dump > or specify a session containing sample files > > running 'opcontrol --dump' when my app is running, or after it is > stopped results in no output. > > opcontrol: oprofile 0.9.2 compiled on Nov 3 2006 13:49:56 > opreport: oprofile 0.9.2 compiled on Nov 3 2006 13:49:56 > > This was installed as an option when installing Fedora. > > My application makes extensive use of shared objects (the actual > executable is a simple app which calls into a shared object. That shared > object calls other shared objects that are either implicitly linked or > dlopen'd). > > Hope I gave enough info for you to help. > > Thanks > -Jim You see nothing with just the a plaing "opreport" on the command line? Should take a look /var/lib/oprofile/oprofiled.log to see what the daemon reports in that file? What are the values for files in /dev/oprofile/stats? Anything in the /var/log/messages about oprofile? -Will |
From: Jim M. <jim...@wb...> - 2007-04-20 15:12:34
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William Cohen wrote: > Jim Marshall wrote: >> Hello, >> I just installed Fedora Core 6 on a Celeron 1.7 machine I have. I am >> attempting to just test oprofile out and get comfortable with it. I >> followed the directions in the "Getting Started" doc >> >> opcontrol --no-vmlinux --callgraph=15 --image=all >> >> opcontrol --start ; <my app> ; opcontrol --stop >> >> I see "Profiler running", my app runs then I see "Stopping profiling" >> >> but when I try to do a opreport I get the following: >> >> opreport error: No sample file found: try running opcontrol --dump >> or specify a session containing sample files >> >> running 'opcontrol --dump' when my app is running, or after it is >> stopped results in no output. >> >> opcontrol: oprofile 0.9.2 compiled on Nov 3 2006 13:49:56 >> opreport: oprofile 0.9.2 compiled on Nov 3 2006 13:49:56 >> >> This was installed as an option when installing Fedora. >> >> My application makes extensive use of shared objects (the actual >> executable is a simple app which calls into a shared object. That shared >> object calls other shared objects that are either implicitly linked or >> dlopen'd). >> >> Hope I gave enough info for you to help. >> >> Thanks >> -Jim > > You see nothing with just the a plaing "opreport" on the command line? > > Should take a look /var/lib/oprofile/oprofiled.log to see what the daemon > reports in that file? > > What are the values for files in /dev/oprofile/stats? > Anything in the /var/log/messages about oprofile? > > -Will > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ Hi Will, First thanks for taking the time to reply, I appreciate it! Turns out that it is working today. I had to shut the machine down to upgrade the memory and when I restarted it I tried again (like 2 minutes ago) and it seems to be working. I'm not sure what I did, in terms of oprofile, but obviously I did something that required me to restart the daemon. Again Thanks! |