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[Bug libstdc++/11602] codecvt<wchar_t, char, mbstate_t> is slow.
- From: "peturr02 at ru dot is" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 20 Jul 2003 13:41:19 -0000
- Subject: [Bug libstdc++/11602] codecvt<wchar_t, char, mbstate_t> is slow.
- References: <20030720133719.11602.peturr02@ru.is>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11602
------- Additional Comments From peturr02 at ru dot is 2003-07-20 13:41 -------
Created an attachment (id=4442)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4442&action=view)
Tool to measure wfilebuf performance.
The poor performance of codecvt causes wfilebuf to be slow also:
time ./wspeed stdio 10000000
0.32user 0.16system 0:00.49elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (67major+12minor)pagefaults 0swaps
time ./wspeed iostream 10000000
4.67user 0.21system 0:05.55elapsed 88%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (72major+21minor)pagefaults 0swaps