On Sat, Jun 27, 2009 at 7:27 PM, Bill Bumgarner<b...@mac.com> wrote: > On Jun 27, 2009, at 6:05 PM, Nick Zitzmann wrote: >> >> That, and 64-bit GC apps allocate a whopping 32 GB of VM on startup on >> Leopard, which might scare a few people that (1) watch Activity Monitor like >> a hawk, and (2) think that VM == swap. Most people won't notice, though. > > It actually isn't 32GB Of VM, even. The collector reserves 32GB of > contiguous addresses, which shows up as VM in Activity Monitor. None of > the pages are touched, though, so it is -- as you note -- completely > innocuous. > > But hard to explain, which is a well understood problem and steps have been > taken to improve the situation.
But that's what VM means: address space. So Activity Monitor is correct to show it, it's just that users interpret the number incorrectly. I think the main solution here is education. It's not like the garbage collector is going to be the only piece of code out there taking advantage of 64-bit addressing by allocating huge swaths of address space for their own uses. Improving things on the OS side sounds like a good idea as long as it doesn't make Activity Monitor less useful for people who know what the numbers mean.... Mike _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
