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Re: Memory Leaks [message #16878 is a reply to message #16838]

Thu, 26 August 1999 00:00

steinhh
Messages: 260
Registered: June 1994

Senior Member

In article <7q35bb$ekf$1@jura.cc.ic.ac.uk> "Justin Ashmall"
<Justin_Ashmall@hotmail.com> writes:

> I should point out that we had some trouble with what appeared
> to be an internal IDL memory leak. We were using IDL 5.1 (under
> NT 4) as control and data aquisition software on processes that
> ran for several days. We were finding that as time progessed the
> memory available to the PC was slowly dropping until the machine
> crashed (taking ~ 18hrs to eat up 100+Mb of memory). Although
> some of this memory leak may have been due to programmatical
> errors, a significant amount of the memory was not released when
> IDL was closed. The only way to recover the memory was to
> reboot. I suppose it is possible that this was due to an error
> in Windows, however NT 4.0 has a fairly good reputation in these
> matters (I'm sure many MS bashers would disagree there though).

Hmmyeah. I cannot see how one could blame a dead program for
hogging memory :-) If the only way to recover was to reboot, I'd
definitely blame it on the operating system.

Of course, the problem may be exacerbated by some internal bad
practice of IDL, but an operating system that doesn't reclaim
all the memory from a dying process is.. well, not a good
operating system.

Another matter is that IDL may be causing other processes to hog
memory - I think this sometimes occurred with the X servers on
Unix systems. A reboot wasn't necessary, though, only a restart
of the X server, which can be done e.g. on console logout.

Regards,

Stein Vidar

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[Message index]

		Memory Leaks By: David on Tue, 24 August 1999 00:00
		Re: Memory Leaks By: steinhh on Thu, 26 August 1999 00:00
		Re: Memory Leaks By: Justin Ashmall on Thu, 26 August 1999 00:00
		Re: Memory Leaks By: davidf on Tue, 24 August 1999 00:00
		Re: Memory Leaks By: kluegel on Tue, 24 August 1999 00:00
		Re: Memory Leaks By: Michael Werger on Mon, 30 August 1999 00:00
		Re: Memory Leaks By: m218003 on Fri, 27 August 1999 00:00

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