sar has the correct information or the vmstat?

From: arun chakrapani rao <arunrao_oradba_at_yahoo.co.in>
Date: Tue, 29 Mar 2005 22:04:03 +0100 (BST)
Message-ID: <20050329210403.90500.qmail@web8503.mail.in.yahoo.com>

Hi unix gurus
which tool for checking the cpu utilization is reliable,
is sar better or vmstat better on an hp box Please let me know
I am working on an HP itanium server out here and i am seeing that both these tools show lots of difference i understand that sar gives out the io stats along with the idle stats.
I am seeing here that idle time based on vmstat shows it is 80 to 90% where as the sar shows the idle time is 50 to 60%
But the top and the glance shows similar to what the vmstat shows.
Hence i am not sure which is correct.
A small output is being show here
Sar 2 5000

15:58:18    %usr    %sys    %wio   %idle
15:58:30      19       4      32      44
15:58:32      14       4      22      61
15:58:34      13       3      18      66
15:58:36      14       4      26      56
15:58:38      21       5      33      42

Vmstat 2
us sy id
12 4 84
13 2 85
18 4 78
16 4 81
13 3 84
13 3 84
20 5 74
13 6 81

Any help would be greatly appreciated.

Thanks in advance

Arun

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Received on Tue Mar 29 2005 - 16:07:47 CST