Re: why is my iostream program so much slower than equivalent cstdio program?

From: Alex Vinokur (alexvn_at_big-foot.com)
Date: 12/24/04

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    Date: Fri, 24 Dec 2004 15:13:15 +0200

    "Mark" <goldman@usgs.gov> wrote in message news:1103826689.229627.276620@f14g2000cwb.googlegroups.com...
    > output.sync_with_stdio(false) has no effect on runtime
    >
    > However, using
    > << '\n'
    > instead of
    > << endl
    > did dramtically improve performance, from IOSTREAM
    > being 10 times slower to being only twice as slow
    [snip]

    Yes, look at C/C++ Performance Tests:
    endl vs. "\n/" and '\n'
    for
    stdout, stderr, cout, cerr, clog, ostringstream, cout-to-file, cerr-to-file, clog-to-file
    http://groups-beta.google.com/group/comp.lang.c++/msg/f0a3f2c6e789dde7
    http://groups-beta.google.com/group/misc.test/msg/ebdc73df3fd7df08 

    -- 
 Alex Vinokur
     email: alex DOT vinokur AT gmail DOT com
     http://mathforum.org/library/view/10978.html
     http://sourceforge.net/users/alexvn
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