Re: R: Running out of VM
Re: R: Running out of VM
- Subject: Re: R: Running out of VM
- From: Jonathan del Strother <email@hidden>
- Date: Sun, 25 Dec 2005 14:42:27 +0000
On 25 Dec 2005, at 12:16, Finlay Dobbie wrote:
On 25/12/05, Jonathan del Strother <email@hidden> wrote:
I rather suspect that the sporadic crashes I'm seeing in my CoverFlow
app are caused by users with not enough free memory.
I rather suspect that that's unlikely. Your users are far more likely
to experience disk thrashing and extreme performance issues (to the
point that your app becomes unusable) well before they actually run
out of VM.
Perhaps. The only crashes I'm hearing about are from vague
descriptions on MacUpdate and through Smart Crash Reports. I'm
struggling to actually pin down a reliable user who can reproduce
these. However, if I artificially persuade my app to take up an
extra couple of gig of memory, things get very, very slow, but I do
get crashes looking fairly similar to these users' crashes. So, I'm
*guessing* that perhaps the users seeing crashes are running with,
say, 256MB of RAM and not much free disk space.
It's causing
crashes in the most unlikely spots - often buried deep within AppKit,
at places beyond my control,
Beyond your absolute control, but certainly not outside the reach of
your influence.
Would be interested in anyone else's thoughts on this matter...
Use the debugging tools at your hands to try and determine the actual
cause of the problem? ;-)
Mmm, tricky when I can't reproduce it... :(
Are there any better ways to test potential low memory issues than
artificially eating up memory with malloc?
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