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Conference turris::digital_unix

Title:	DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:	Welcome to the Digital UNIX Conference
Moderator:	SMURF::DENHAM

Created:	Thu Mar 16 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	10068
Total number of notes:	35879

9881.0. "vmstat (ACT+FREE+WIRE)=?" by VAXRIO::16.179.32.123::Manoel () Mon May 19 1997 16:57

	Hi, folks

	I'm dealing with vmstat, and need to explain to a customer some
numbers, for example I thought that ACT+FREE+WIRE would give the physical
amount of memory, but in some machines it is not true and others yes.
	Another point is that adding all the values in the REAL SIZE collum
of the ps aux command should give ACT (my assumption), but it is also not 
true.
	Can someone shed some light here ?
	Thanks in advance for any help.
	Regards.


				Manoel F. Abreu Neto (MCS/DEC@Rio)

T.R	Title	User	Personal Name	Date	Lines
9881.1	See Note 7395.*	GIDDAY::STRAUSS	talking through my binoculars	`Mon May 19 1997 18:44`	1
	See Note 7395.* "Vmstat and Memory use"
9881.2		KITCHE::schott	Eric R. Schott USG Product Management	`Mon May 19 1997 20:18`	5
	See also that sys_check under the VM section, will give you a close approximation of where you memory is (at the time sys_check ran) http://www-unix.zk3.dec.com/tuning/tools/sys_check/sys_check.html
9881.3	it's a close approximation	NNTPD::"[email protected]"	Farrell Woods	`Tue May 20 1997 10:06`	9
	For instance on my system, I 96MB of memory. Adding up the numbers displayed by vmstat yields a total of 92+. Note that the console reserves 2MB of memory, which is not used by the OS nor is accounted for by vmstat. So taking that into account gets 94+. Pretty close... -- Farrell [Posted by WWW Notes gateway]