Milian Wolff <m...@milianw.de> writes: > > OK, with a more recent perf v4.2.rc5 on a Intel(R) Core(TM) i7-4770 CPU @ > 3.40GHz it actually works. Somewhat :) It is much faster, but the callstacks > don't terminate properly, and are sometimes not correctly demangled. I > observe > the following behavior: > > 15.56% ex_string_compa libQt5Core.so.5.5.0 [.] > QString::compare_helper > | > |--5.84%-- > _ZN7QString14compare_helperEPK5QChariS2_iN2Qt15CaseSensitivityE@plt
Maybe the demangler doesn't like the @plt. > | QString::compare_helper > | main > | | > | |--4.24%-- main > | | | > | | |--1.60%-- main > | | | | > | | | |--1.07%-- main Yes that looks like a bug. Adding Kan. -Andi > | | | | | > | | | | |--0.54%-- main > | | | | | main > | | | | | > | | | | --0.53%-- > QString::compare_helper > | | | | main > | | | | > | | | --0.53%-- > QString::compare_helper > | | | main > | | | main > | | | > QString::compare_helper > | | | main > | | | > QString::compare_helper > ... > > The correct callgraph, as shown by --call-graph dwarf, is: > > 21.62% ex_string_compa libQt5Core.so.5.5.0 [.] > QString::compare_helper > | > ---QString::compare_helper > main > > Is this a known (undocumented) limitation or a bug? Is there anything I could > do to get this fixed? > > Thanks -- a...@linux.intel.com -- Speaking for myself only -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html