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[Bug libstdc++/19642] streaming doubles is very slow compared to sprintf
- From: "pcarlini at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 26 Jan 2005 15:22:01 -0000
- Subject: [Bug libstdc++/19642] streaming doubles is very slow compared to sprintf
- References: <20050126142651.19642.joerg.richter@pdv-fs.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pcarlini at suse dot de 2005-01-26 15:22 -------
> Ok, lets say I took 100 backtraces and got 99 times this one. I hope this is
> enough percentage.
;) No, I mean *relative* percentages: setlocal in your profile is on top, higher
than __convert_from_v and everything else. I'm asking: is consuming 1%, 10%, or
99% of the total runtime?
> _GLIBCXX_USE_C99 is defined
In this case, can you possibly check whether, for some reason, snprintf is
slower than sprintf, on AIX?
Thanks
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19642