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Groups > comp.lang.python > #30336

Re: Reducing cache/buffer for faster display

From John Gordon <gordon@panix.com>
Newsgroups comp.lang.python
Subject Re: Reducing cache/buffer for faster display
Date 2012-09-27 22:25 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <k42jp3$1nc$1@reader1.panix.com> (permalink)
References <cmuej9-0ml.ln1@murmur.very.softly> <mailman.1522.1348783807.27098.python-list@python.org>

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In <mailman.1522.1348783807.27098.python-list@python.org> Chris Angelico <rosuav@gmail.com> writes:

> On Fri, Sep 28, 2012 at 7:57 AM, Rikishi42 <skunkworks@rikishi42.net> wrote:
> > I have these 2 scripts that are very heavy on the file i/o, consume a very
> > reasonable amount of cpu and output their counters at a - very - relaxed
> > pace to the console. The output is very simply done using something like:
> >
> >    print "files:", nFiles, "\r",
> >
> >
> > Yet alltough there is no real reason for it, even a pace of a print every
> > 10-30 secs will be cached, only to actually show an output update every 1-2
> > min or so.

> Yup! Just add a call to sys.stdout.flush() after each print.

Isn't terminal output line-buffered?  I don't understand why there would
be an output delay.  (Unless the "\r" is messing things up...)

-- 
John Gordon                   A is for Amy, who fell down the stairs
gordon@panix.com              B is for Basil, assaulted by bears
                                -- Edward Gorey, "The Gashlycrumb Tinies"

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Thread

Reducing cache/buffer for faster display Rikishi42 <skunkworks@rikishi42.net> - 2012-09-27 23:57 +0200
  Re: Reducing cache/buffer for faster display Chris Angelico <rosuav@gmail.com> - 2012-09-28 08:09 +1000
    Re: Reducing cache/buffer for faster display John Gordon <gordon@panix.com> - 2012-09-27 22:25 +0000
      Re: Reducing cache/buffer for faster display Chris Angelico <rosuav@gmail.com> - 2012-09-28 08:38 +1000
        Re: Reducing cache/buffer for faster display Rikishi42 <skunkworks@rikishi42.net> - 2012-09-28 02:05 +0200
          Re: Reducing cache/buffer for faster display Chris Angelico <rosuav@gmail.com> - 2012-09-28 18:08 +1000
            Re: Reducing cache/buffer for faster display Rikishi42 <skunkworks@rikishi42.net> - 2012-09-29 02:31 +0200
      Re: Reducing cache/buffer for faster display Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-09-27 21:46 -0400
        Re: Reducing cache/buffer for faster display Rikishi42 <skunkworks@rikishi42.net> - 2012-09-29 02:20 +0200
          Re: Reducing cache/buffer for faster display Hans Mulder <hansmu@xs4all.nl> - 2012-09-29 14:32 +0200
          Re: Reducing cache/buffer for faster display Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-09-29 14:12 -0400
    Re: Reducing cache/buffer for faster display Rikishi42 <skunkworks@rikishi42.net> - 2012-09-28 02:15 +0200

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