Re: the Virtual Memory
Re: the Virtual Memory
- Subject: Re: the Virtual Memory
- From: "Jordan K. Hubbard" <email@hidden>
- Date: Thu, 8 Jun 2006 17:17:34 -0700
You might look at the source code for top(1) - it grubs through a lot
of this information.
- Jordan
On Jun 8, 2006, at 4:18 PM, Graham J Lee wrote:
Hi,
a while ago I wrote a tool similar to Linux's free for Darwin
(basically at the time because I needed a quick way to log the RAM
consumption of a WebObjects server), but left out reporting on swap
because I didn't know how. Now I'm coming back to fill in
reporting on swap, and still don't know how :-)
Does the value vm_statistics_t->pageouts report the number of
pageouts since boot, or the number of pages which are currently
paged out? If the latter, then I suppose the 'used swap space' is
simply that quantity times the page size. What is the 'total swap
space', if such a question makes sense with this VMM? Is it just
the size of all of the in-use swapfiles? Is there yet any way to
determine the files currently being used for swap? Oh, and is
there a modern equivalent for mach_swapon and /etc/swaptab?
Maybe a better question would be: where is there a general
reference to the VMM used in Darwin, beyond the source code (xnu/
osfmk/vm/)? I've just found the Rashid/Tevanien/et al paper on the
mach VMM, which I "look forward" to ploughing through along with
the appropriate chapter in the OSF documentation. Is there
anything Darwin-specific?
Cheers,
Graham.
--
Graham Lee
UNIX Systems Manager,
Oxford Physics Practical Course
http://iamleeg.blogspot.com/
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden