-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sat, Dec 01, 2007 at 06:59:46PM +0200, Nikos Ntarmos wrote: > I just finished a cvsup/buildworld/installworld cycle and tried > executing a CFLAGS+=-pg compiled version of pkg_info. Except from the > (initially confusing) fact that pkg_info chdir(2)'s into every port's > directory under /var/db/pkg and thus pkg_info.gmon is created in the > dir of the last visited port, gprof didn't segfault or whatever. > > However, I now see an artifact, not present previously in my BETA1 > world: .mcount seems to be taking the best part of the time percentage > in the flat profile section. FYI I've done a 'pkg_info -a >/dev/null' > and put the output of 'gprof /path/to/profiled/pkg_info pkg_info.gmon' > online at http://ntarmos.dyndns.org/Misc/pkg_info.gprof. I also see > this with my other -pg compiled code, so this is due to either > something that changed between BETA1 and now, or some of the (just > rebuilt) libraries taking up the change in profile.h. Interestingly, the .mcount flatprofline is substituted by _mcleanup if pkg_info is compiled -O1 -- see [1]. If it is then compiled -O0, the output is as in [2] (i.e. no .mcount and no _mcleanup). I guess there's something I don't get wrt optimization levels and profiling, although I can't quite see the connection. After all, .mcount and _mcleanup are explicitly excluded by default (usr.bin/gprof/elf.c:59, usr.bin/gprof/aout.c:61). \n\n [1] http://ntarmos.dyndns.org/Misc/pkg_info.gprof.O1 [2] http://ntarmos.dyndns.org/Misc/pkg_info.gprof.O0 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) Comment: Nikos Ntarmos <ntarmos_at_ceid.upatras.gr> iD8DBQFHUbJUm6J1ac+VFgoRAmD8AJ9Ut3XoJVJwZ22OsArviKHjH4dsGwCeN4T4 ECtTFTRuhQI/GVlny+VifyU= =NSTP -----END PGP SIGNATURE-----Received on Sat Dec 01 2007 - 18:13:31 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:23 UTC