Re: What Determines VSIZE allocation?
Re: What Determines VSIZE allocation?
- Subject: Re: What Determines VSIZE allocation?
- From: "Tobias Zimmerman" <email@hidden>
- Date: Fri, 16 Jan 2009 01:26:53 -0500
>
> I believe, if I understood Bill Bumgarner's message correctly, is that
> the 8GB range being assigned to the app is due in part to the design
> of the garbage collector, libauto. I doubt that Apache is compiled to
> use the garbage collector at all and thus, is not having that memory
> range allocated to it.
>
> > If the outsized VSIZE does indicate "misbehavior in [my] process",
> > what are
> > the types of things I should look for? I don't have any memory
> > leaks (that
> > I can see -- the app runs for hours without increasing its memory
> > consumption, and nothing obvious appears in instruments). I am not
> > creating
> > hundreds of objects, and I have a limited number of classes in my app.
>
> As I understand it, it's not the size of the VSIZE that should concern
> you, but rather if the size only ever increases. In that case you may
> have files mapped to memory that you are leaking. Perhaps there are
> other conditions that would cause this, but that seems the most likely.
>
>
> Ashley
>
>
> ------------------------------
>
First, apologies for messing up the subject on my previous reply. Thanks
for getting back to me anyway.
Yes, I overlooked Bill Bumgarner's reference to the GC. Turning off GC in
my app does indeed reduce VSIZE from 8GB to 350MB (of course, since I wrote
it strictly as a GC app, it doesn't actually work without GC, but that's my
fault :)
So, moral of the story: GC apps in 64-bit mode allocate themselves a
tremendous amount of virtual memory, but unless they are actually *using* a
lot of VM, then there is nothing to worry about. Did I get that right?
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden