vm_stat man page on OpenDarwin

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VM_STAT(1)		  BSD General Commands Manual		    VM_STAT(1)

NAME
     vm_stat — show Mach virtual memory statistics

SYNOPSIS
     vm_stat [interval]

DESCRIPTION
     vm_stat displays Mach virtual memory statistics.  If the optional
     interval is specified, then vm_stat will display the statistics every
     interval seconds.	In this case, each line of output displays the change
     in each statistic (an interval count of 1 displays the values per sec‐
     ond).  However, the first line of output following each banner displays
     the system-wide totals for each statistic.	 The following values are dis‐
     played:
     Pages free
	     the total number of free pages in the system.
     Pages active
	     the total number of pages currently in use and pageable.
     Pages inactive
	     the total number of pages on the inactive list.
     Pages wired down
	     the total number of pages wired down.  That is, pages that cannot
	     be paged out.
     Translation faults
	     the number of times the "vm_fault" routine has been called.
     Pages copy-on-write
	     the number of faults that caused a page to be copied (generally
	     caused by copy-on-write faults).
     Pages zero filled
	     the total number of pages that have been zero-filled on demand.
     Pages reactivated
	     the total number of pages that have been moved from the inactive
	     list to the active list (reactivated).
     Pageins
	     the number of requests for pages from a pager (such as the inode
	     pager).
     Pageouts
	     the number of pages that have been paged out.

     If interval is not specified, then vm_stat displays all accumulated sta‐
     tistics along with the page size and the object cache performance.

Mac OS				August 13, 1997				Mac OS
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