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[Bug libfortran/21820] Really, really, horrible IO performance
- From: "fxcoudert at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 May 2005 10:46:45 -0000
- Subject: [Bug libfortran/21820] Really, really, horrible IO performance
- References: <20050530143227.21820.kargl@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From fxcoudert at gcc dot gnu dot org 2005-05-31 10:46 -------
Additional info: disabling MMAP (#undefining HAVE_MMAP in unix.c) gives far
better performance (in fact, I can see no performance penatly at all).
Perhaps a survey of the cases where mmap induces performance gains and losses
would be usefull...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21820