Re: Very slow execution under Fedora 34
John Reiser <[email protected]>
| Newsgroups | gmane.comp.debugging.valgrind |
|---|---|
| Message-ID | <[email protected]> |
> I am running valgrind on my PC with dual boot Windows 10 and Fedora 34. > > Running the same test on Ubuntu 20.04 (under Windows 10 WSL2) valgrind runs in less than a second, but on Fedora 34 is very slow, several minutes slow. > > On Fedora 34 it looks like the time spent is reading symbols. > > This is the part that takes most of the time: > > --23524-- Reading syms from /usr/lib64/libstdc++.so.6.0.29 > --23524-- Considering /usr/lib/debug/.build-id/bd/d633ff5da0bba64d19ecf277a9eed7001da127.debug .. > --23524-- .. build-id is valid > --23524-- Considering /usr/lib/debug/.build-id/bd/../../../../../usr/lib/debug/usr/lib64/../../.dwz/gcc-11.2.1-1.fc34.x86_64 .. > --23524-- .. build-id is valid [[snip]] > > What could be the problem? GGC 11 perhaps? There have been some hints of trouble with the DWARF-5 symbol reader. Thus a work-around might be to avoid DWARF-5 by using an older gcc. If you can, please run "perf record" and then "perf report", and copy+paste (or attach) info into a Bug Report (see https://valgrind.org). Then post the bug link here with a teaser. _______________________________________________ Valgrind-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/valgrind-users