[hobbit] Solaris vmstat and sar

[James Wade]

But you should not see a major difference like 67% idle to
1% idle.... I've tried using two screens on the same system
comparing sar to vmstat and using different intervals.
vmstat significantly understates cpu usage in comparison
to top, uptime, and sar.

Does any have any ideas?

James

-----Original Message-----
From: Langford, Kenneth [mailto:crlangfo at ugs.com] 
Sent: Monday, December 03, 2007 2:13 PM
To: hobbit at hswn.dk
Subject: RE: [hobbit] Solaris vmstat and sar

The vmstat first line shows the system average stats for systems since
the last time the system was booted.  Vmstat shows the average use over
the 5 second interval in you example below of vmstat 5 5.  Sar shows the
stats at the time the check was taken.  So you are not comparing apples
to apples.  So they are going to give you different results.

Ken L. 


-----Original Message-----
From: James Wade [mailto:jkwade at futurefrontiers.com] 
Sent: Monday, December 03, 2007 2:34 PM
To: hobbit at hswn.dk
Subject: RE: [hobbit] Solaris vmstat and sar

Tried that, It didn't work. You still get some lines that
have incorrect data, like 67% idle. The sar data showed cpu
idle at 1% or 0% all 5 lines.

James

-----Original Message-----
From: Lund, Holly [mailto:holly.lund at hq.doe.gov] 
Sent: Monday, December 03, 2007 1:12 PM
To: hobbit at hswn.dk
Subject: RE: [hobbit] Solaris vmstat and sar

vmstat first output is invalid.  doing vmstat 5 5 the other 4 should
change to reflect sar


Holly Lund





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