callgrind | 易学教程

View gprof output in kcachegrind

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问题 How to view output of gprof in kcachegrind? Is here a converter from gcc's gmon.out into callgrind.out? 回答1: Currently, this seems not to be supported. It is mentioned on Kcachegrind's whishlist, though. 来源： https://stackoverflow.com/questions/7274095/view-gprof-output-in-kcachegrind

callgrind : how to check whether a line executed or not

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问题 Is it possible to use callgrind to produce the output like one given by gcov/lcov ? I'm reading their docs unable to find the exact option for callgrind_annotate 回答1: It is not possible but callgrind_annotate nor kcachegrind should implement it. However with kcachegrind you have the call's count of each functions/methods. Column Calls in Cost/All callers tab or Count in Callers tab should be relevant. 回答2: Yes, you can. Using callgrind --collect-jumps=yes, and the tools described at the link

callgrind : how to check whether a line executed or not

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Parsing a tokenized free form grammar with Boost.Spirit

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问题 I've got stuck trying to create a Boost.Spirit parser for the callgrind tool's output which is part of valgrind. Callgrind outputs a domain specific embedded programming language (DSEL) which lets you do all sorts of cool stuff like custom expressions for synthetic counters, but it's not easy to parse. I've placed some sample callgrind output at https://gist.github.com/ned14/5452719#file-sample-callgrind-output. I've placed my current best attempt at a Boost.Spirit lexer and parser at https:/

What profiler should I use to measure _real_ time (including waiting for syscalls) spend in this function, not _CPU_ one

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问题 The application does not calculate things, but does i/o, read files, uses network. I want profiler to show it. I expect something like something like in callgrind that calls clock_gettime each proble. Or like oprofile that interrupts my application (while it is sleeping or waiting for socket/file/whatever) to see what is it doing. I want things like "read", "connect", "nanosleep", "send" and especially "fsync" ( And all their callers ) to be bold (not things like string or number functions

Make callgrind show all function calls in the kcachegrind callgraph

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问题 I was using valgrind tool - callgrind and kcachegrind for profiling a large project and was wondering if there is a way that callgrind reports the stats from all the functions (not just the most expensive functions). To be specific - When I visualized the callgraph in kcachegrind, it included only those functions that are quite expensive, but I was wondering if there is a way to include all the functions from the project in the callgraph. Command used for generating profiling info is given

How use callgrind to profiling only a certain period of program execution?

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问题 I want to use valgrind to do some profiling, since it does not need re-build the program. (the program I want to profile is already build with “-g") But valgrind(callgrind) is quite slow ... so here's what I to do: start the server ( I want to profile that server) kind of attach to that server before I do some operation on server, start collect profile data after the operation is done, end collecting profile data analyze the profiling data. I can do this kind of thing using sun studio on

Confused about profiling result

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问题 I have built my program with " -g -O2 " and ran valgrind +cachegrind. I am unsure how to interpret the output. Here is the output: http://daviddoria.com/Uploads/callgrind.CacheMisses My "whole program" is the InpaintingAlgorithm function that is 98.4% of "main". So far so good. Now looking at the callees of InpaintingAlgorithm , 92.9% of InpaintingAlgorithm is LinearSearchKNNProperty::operator() . This is my "inner loop", and again I expect a huge amount of the time to be spent here. Now here

callgrind : how to check whether a line executed or not

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Is it possible to use callgrind to produce the output like one given by gcov/lcov ? I'm reading their docs unable to find the exact option for callgrind_annotate It is not possible but callgrind_annotate nor kcachegrind should implement it. However with kcachegrind you have the call's count of each functions/methods. Column Calls in Cost/All callers tab or Count in Callers tab should be relevant. Yes, you can. Using callgrind --collect-jumps=yes, and the tools described at the link below, you can get much the same information as gcov. It's not as pretty as lcov, but the time savings might just

Interpreting callgrind data

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问题 I need a dynamic call graph for my app. I run it with callgrind tool ( valgrind suite) and got callgrind.out.xxxxx file. Now, I want to make a graphical representation of this data. KCacheGrind doesn't help me much because it draws a limited part of the graph (draws ~50 functions instead of ~1500 profiled and I don't know how to fix that). How can I get a graph image where all of the functions will be drawn? 回答1: Ok, I've found the way. The generated callgrind.out file you can convert to dot