[CentOS] Monitoring IO -- vmstat doesn't match snmp

2011-11-07 Thread David Dyer-Bennet
I made the mistake of looking at disk IO numbers in two different ways -- now I'm confused, because they give inconsistent answers. First way was using 'vmstat 10'. This gave me (apologies for wrapped lines): r b swpd free buff cache si sobibo in cs us sy id wa st 2 0

Re: [CentOS] Monitoring IO -- vmstat doesn't match snmp

2011-11-07 Thread Rajagopal Swaminathan
Greetings, On Mon, Nov 7, 2011 at 10:23 PM, David Dyer-Bennet d...@dd-b.net wrote: I made the mistake of looking at disk IO numbers in two different ways -- now I'm confused, because they give inconsistent answers. First way was using 'vmstat 10'.  This gave me (apologies for wrapped lines):

Re: [CentOS] Monitoring IO -- vmstat doesn't match snmp

2011-11-07 Thread David Dyer-Bennet
On Mon, November 7, 2011 11:51, Rajagopal Swaminathan wrote: Greetings, On Mon, Nov 7, 2011 at 10:23 PM, David Dyer-Bennet d...@dd-b.net wrote: I made the mistake of looking at disk IO numbers in two different ways -- now I'm confused, because they give inconsistent answers. First way was

Re: [CentOS] Monitoring IO -- vmstat doesn't match snmp

2011-11-07 Thread David Dyer-Bennet
On Mon, November 7, 2011 13:23, Rajagopal Swaminathan wrote: Greetings, On Tue, Nov 8, 2011 at 12:40 AM, David Dyer-Bennet d...@dd-b.net wrote: On Mon, November 7, 2011 11:51, Rajagopal Swaminathan wrote: Greetings, On Mon, Nov 7, 2011 at 10:23 PM, David Dyer-Bennet d...@dd-b.net wrote:

Re: [CentOS] Monitoring IO -- vmstat doesn't match snmp

2011-11-07 Thread Rajagopal Swaminathan
Greetings, On Tue, Nov 8, 2011 at 1:13 AM, David Dyer-Bennet d...@dd-b.net wrote: No, doesn't help. Also, if you're claiming that the answers I get from monitor would be correct, I'd like to understand why you think that set will be right in preference to vmstat and snmp. Or is it just