FWIW, The code in Hobbit that processes the vmstat output takes this into account.
Rich Smrcina VM Assist, Inc. Main: (866)569-7378 Cell: (414)491-6001 Catch the WAVV! http://www.wavv.org WAVV 2007 - Green Bay, WI ----- Original Message ----- From: "Edmund R. MacKenty" <[EMAIL PROTECTED]> Date: Thursday, August 9, 2007 11:54 am Subject: Re: How to translate Load Average to meaningful management numbers To: [email protected] > Actually, that shows the average CPU usage since last reboot, > because vmstat's > default output contains the average. If you want to get the > current CPU > usage, you have to get two lines of output and it will give you the > averageover the time between those two lines. Thus "vmstat 1 2" > will show the > average over one second, and you can do this to get just the number > you want: > > vmstat 1 2 | awk '{idle=$15} END {print 100 - idle}' > > (Note that I'm doing all the work Adam did with tail and the shell > in awk > here, because I like awk. All its doing is collecting the 15th > field from > each line, and after the input ends its got the idle CPU value from > the last > line, which is what we need.) > > By changing that first argument to vmstat, you can get the average > CPU usage > over any number of seconds. > - MacK. > ----- > Edmund R. MacKenty > Software Architect > Rocket Software, Inc. > Newton, MA USA ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
