https://sourceware.org/bugzilla/show_bug.cgi?id=29505
--- Comment #7 from Ralf Habacker <ralf.habacker at freenet dot de> --- (In reply to Nick Clifton from comment #6) > (In reply to Ralf Habacker from comment #5) > Hi Ralf, > > > i686-w64-mingw32-objdump still needs about 30s to scan assistant-qt5.exe, > > where it needs 2.8s when running on the host. > > Sorry - I had not really grokked that this was a problem specific to the OBS > build environment. > Based upon your comments in the opensuse ticket, this is a problem with > unaligned memory access >From the screenshot appended to the associated opensuse bug https://bugzilla.opensuse.org/attachment.cgi?id=860901 it looks so. The functions __memset_avx2_unaligned_erms and __memset_avx2_erms are involved. > and possibly specific to the OBS environment As written in the description of this bug I was able to reproduce this issue also with a local chroot environment, so the issue is not obs specific. > running an unoptimized version of memset. If that is what the above mentioned functions do, then yes. > If so are you able to enable profiling and find out which memset(s) are > taking all the time ? You can see this at https://bugzilla.opensuse.org/attachment.cgi?id=860901 __memset_avx2_erms takes about 90% of the execution time and is called from __memset_avx2_unaligned_erms. > > Cheers > Nick -- You are receiving this mail because: You are on the CC list for the bug.
