Re: "High water" Memory fragmentation still a thing?

From	dieter <dieter@handshake.de>
Subject	Re: "High water" Memory fragmentation still a thing?
Date	2014-10-10 08:09 +0200
References	(1 earlier) <mailman.14590.1412378803.18130.python-list@python.org> <7ac186c3-2dbc-4cfa-ab58-37854aeb59d1@googlegroups.com> <mailman.14647.1412613796.18130.python-list@python.org> <b5ce5cc2-3a37-49e4-aa2a-d29dd3dda972@googlegroups.com> <m16vb8$psb$1@ger.gmane.org>
Newsgroups	comp.lang.python
Message-ID	<mailman.14739.1412921388.18130.python-list@python.org> (permalink)

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Emile van Sebille <emile@fenx.com> writes:

> On 10/8/2014 10:28 AM,
> bryanjugglercryptographer@yahoo.com.dmarc.invalid wrote:
>
>> That doesn't mean to tell a human administrator to regularly restart the server. It's programmatic and it's a reasonably simple and well-established design pattern.
>
> I'd call it more a compensation technique than a design pattern*.  You
> know, like rebooting windows routinely.  :)
>
> Emile
>
>
> *) Alternately known as a workaround or kludge.

Well, everything has a price.

Python does not use memory compaction but places many objects on the
heap and therefore, long running processes
usually are subject to memory fragmentation. As a consequence, those
processes need to be restarted from time to time.

Would Python use memory compaction, implementing C extensions would
be much more tedious and error prone and there would be less such
extensions - limiting the domain where Python is used.

One has to choose.

People who do not like the choice of the
"CPython" implementation (no memory compaction) may look at
"Jython" (based on Java, with memory compaction). If they are lucky,
all the extensions they need are available there.

Thread

Re: "High water" Memory fragmentation still a thing? Chris Angelico <rosuav@gmail.com> - 2014-10-04 09:26 +1000
  Re: "High water" Memory fragmentation still a thing? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-04 11:02 +1000
    Re: "High water" Memory fragmentation still a thing? Chris Angelico <rosuav@gmail.com> - 2014-10-04 12:22 +1000
      Re: "High water" Memory fragmentation still a thing? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-04 15:48 +1000
        Re: "High water" Memory fragmentation still a thing? Chris Angelico <rosuav@gmail.com> - 2014-10-04 15:57 +1000
        Re: "High water" Memory fragmentation still a thing? Sturla Molden <sturla.molden@gmail.com> - 2014-10-04 17:51 +0000
    Re: "High water" Memory fragmentation still a thing? Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-04 16:20 -0400
    Re: "High water" Memory fragmentation still a thing? mm0fmf <none@mailinator.com> - 2014-10-05 20:23 +0100
      Re: "High water" Memory fragmentation still a thing? Steven D'Aprano <steve@pearwood.info> - 2014-10-06 07:20 +0000
  Re: "High water" Memory fragmentation still a thing? bryanjugglercryptographer@yahoo.com - 2014-10-06 09:21 -0700
    Re: "High water" Memory fragmentation still a thing? Chris Angelico <rosuav@gmail.com> - 2014-10-07 03:43 +1100
      Re: "High water" Memory fragmentation still a thing? bryanjugglercryptographer@yahoo.com - 2014-10-08 10:28 -0700
        Re: "High water" Memory fragmentation still a thing? Emile van Sebille <emile@fenx.com> - 2014-10-09 14:39 -0700
        Re: "High water" Memory fragmentation still a thing? Chris Angelico <rosuav@gmail.com> - 2014-10-10 08:42 +1100
        Re: "High water" Memory fragmentation still a thing? dieter <dieter@handshake.de> - 2014-10-10 08:09 +0200
        Re: "High water" Memory fragmentation still a thing? Chris Angelico <rosuav@gmail.com> - 2014-10-10 17:52 +1100

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