Charles-Francois Natali <neolo...@free.fr> added the comment: > pitrou> I think your analysis is wrong. These mmap() calls are for > pitrou> anonymous memory, most likely they are emitted by the libc's > pitrou> malloc() to get some memory from the kernel. In other words > pitrou> they will be blazingly fast. > > Are you sure? :-)
Well, it is fast. It's true that mmap is slower than brk, since the kernel zero-fills the pages, but the overhead probably doesn't come from this, but more likely from pymalloc or malloc, and also from the call to _PyBytes_resize in posix_read when the number of bytes read is smaller than what has been requested. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue11314> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
