Find all needed information about Oprofile Call Graph Support. Below you can see links where you can find everything you want to know about Oprofile Call Graph Support.
https://sourceforge.net/p/oprofile/mailman/message/10394062/
OProfile is VMA based and the call-graph code uses the frame pointer to traverse the stack, recording the saved VMA at each frame.
http://oprofile.sourceforge.net/about/
Call-graph support With an x86 or ARM 2.6 kernel, OProfile can provide gprof-style call-graph profiling data.
https://oprofile.sourceforge.io/faq/
Yes, starting with OProfile 0.8 and kernel version 2.6, callgraph support is available on many (but not all) architectures, such as x86, ARM, and ppc/ppc64. What about the "security hole" CVE-2006-0576 ? This "problem" only occurs if you actively, and mistakenly, configure access to OProfile via sudo.
https://stackoverflow.com/questions/15766674/oprofile-callgraph-origin-of-syscalls
I just wanted to show easy it is to fool a call graph. The red lines represent call stack samples. Here A1 spends all its time calling C2, and vice-versa. Then suppose you keep the same behavior, but you put in a "dispatch" routine B. Now the call graph loses the information that …
https://ipaqprofiling.blogspot.com/
In order to use Oprofile you have to compile your kernel with profiling support, and compile the oprofile module. You will be able to do event-based profiling and time-based profiling. Oprofile also supports generating call-graphs for ARM-based processors. To obtain a callgraph report use the -c flag (opreport …
https://sourceforge.net/p/oprofile/mailman/message/10395323/
cool. thx. later that day i used similar step to get a good call graph. something like this. CPU: P4 / Xeon with 2 hyper-threads, speed 3391.74 MHz (estimated) Counted GLOBAL_POWER_EVENTS events (time during which processor is not stopped) with a unit mask of 0x01 (mandatory) count 100000 samples % image name app name symbol name ----- 1701 0.1020 vmlinux vmlinux copy_from_user 4375 …
http://oprofile.sourceforge.net/doc/interpreting-callgraph.html
Sometimes the results from call-graph profiles may be different from what you expect to see. The first thing to check is whether the target binaries where compiled with frame pointers enabled (if the binary was compiled using gcc 's -fomit-frame-pointer option, you will not get meaningful results). Note that as of this writing, the GCC developers plan to disable frame pointers by default.
https://www.eclipse.org/forums/index.php/t/158969/
OProfile has a built-in support for sampling callgraphs (-c/--callgraph) but the plugin does not support this feature. The callgraph sampling is essential and is much more important than "plain" profiling. I think it would not be hard to implement it, since the format of "opreport --callgraph"is pretty simple.
https://oprofile.sourceforge.io/news/
OProfile 0.8 has been released. New in this release is experimental call-graph profiling support, new hardware support, support for separate debug files, and some important bug fixes. 2003-11-12 OProfile 0.7.1 released OProfile 0.7.1 has been released.
https://developer.ibm.com/tutorials/migrate-from-oprofile-to-perf/
Learn about the Linux perf command and how it can provide the same capabilities as OProfile tools, and much more. Learn about the Linux perf command and how it can provide the same capabilities as OProfile tools, and much more. Skip to main content IBM Developer. ... Call-graph support ...
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