Added the sar descriptions
Thanks.James
From: James Wade [mailto:jkwade at futurefrontiers.com] Sent: Friday, November 30, 2007 12:07 PM To: hobbit at hswn.dk Subject: [hobbit] RE: CPU Utilization, Not Good
I thought I'd give some more information.
I'm using solaris, and cpu utilization used vmstat.
If I do a sar I get this:
%usr %sys %wio %idle10:10:00 23 5 6 66
10:20:00 46 5 4 44
10:30:00 69 7 7 18
10:40:00 76 7 4 13
10:50:01 81 6 2 11
11:00:00 69 7 4 20
11:10:01 71 9 5 15
11:20:01 88 7 1 4
Average 23 5 6 66
Notice that cpu utilization from about 10:30 to 11:20 is
high.
However, with Hobbit, I get a solid 23% average for everything. the hobbit-client-sunos.sh uses: vmstat 300 2 which gives met this:
$ vmstat 300 2
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 s3 s6 s9 in sy cs us sy id
0 0 0 166920152 16811328 878 1814 1902 55 55 0 0 0 0 0 0 1755 3374 6188 16 4 80
0 0 0 166919832 16811024 878 1814 1902 55 55 0 0 0 0 0 0 1756 3376 6188 16 4 80
Notice that a 5 minute average from vmstat shows 80% idle, yet the sar above doesn't show that.
Is there anyway to get Hobbit to use sar for CPU utilization instead of vmstat on solaris?
Thanks.James
From: James Wade [mailto:jkwade at futurefrontiers.com] Sent: Friday, November 30, 2007 11:21 AM To: 'hobbit at hswn.dk' Subject: CPU Utilization, Not Good
Hi,
I've asked this several times, but I really have not received
a good answer. Hobbit doesn't really seem to monitor cpu
utilization correctly.
For example, I can look at the load, login to the box, and then
run top. Top shows that cpu utilization is at 100%, 0% idle time.
However, the "trends" utilization graph shows 20% cpu utilization.
Can someone tell me why?
Thanks..James
James Wade