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Date:      Tue, 14 Feb 2006 09:13:29 +1100
From:      "Robert Leftwich" <freebsd@rtl.fmailbox.com>
To:        "David Scheidt" <dscheidt@panix.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Memory leak?
Message-ID:  <1139868809.6940.254283466@webmail.messagingengine.com>
In-Reply-To: <20060213214053.GA20537@panix.com>
References:  <1139792505.30118.254198744@webmail.messagingengine.com> <43F0434F.2000703@locolomo.org> <1139826617.10634.254226042@webmail.messagingengine.com> <20060213214053.GA20537@panix.com>

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On Mon, 13 Feb 2006 16:40:54 -0500, "David Scheidt" <dscheidt@panix.com>
said:
> 
> I've seen (very, very, very, very) large memory leaks on long-lived
> Python processes.  I haven't looked at it to figure out if it's
> python, some module, or the application doing something stupid.  But
> the processes will grow until they hit their limits.

What's your definition of long-lived? My scenario is that I'm processing
a particular dataset in Python which is launched by a shell script, once
finished (after 30-35mins) the Python app completes and the shell script
launches another instance on a new dataset. All memory allocated by the
finished Python app should be freed/made inactive shouldn't it?

Here's some more data:

After a reboot this is what top says:

    Mem: 45M Active, 13M Inact, 61M Wired, 4K Cache, 60M Buf, 2842M Free
    Swap: 4068M Total, 4068M Free

which totals 3021M

After 1 dataset it is:

    Mem: 107M Active, 1919M Inact, 158M Wired, 16K Cache, 214M Buf, 570M
    Free
    Swap: 4068M Total, 4068M Free

which totals 2968M

While running on the 6th dataset:

    Mem: 1032M Active, 1045M Inact, 260M Wired, 145M Cache, 214M Buf,
    4664K Free
    Swap: 4068M Total, 108K Used, 4068M Free

which totals 2700.6M

Are my assumptions incorrect, should the totals displayed by top be at
least approximately equal?

Robert





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