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Top Forums UNIX for Dummies Questions & Answers Is total CPU usage for sar %user+%system+%iowait? Post 302614847 by newbie_01 on Thursday 29th of March 2012 02:04:26 AM
Old 03-29-2012
Is total CPU usage for sar %user+%system+%iowait?

Hi all

Can anyone advise/confirm whether total CPU usage when running sar is %user+%system+%iowait or is it %user+%system only?

I want to confirm whether I am having a CPU-bound problem or not.

This is a single-CPU VMware machine.

Code:
[oracle@prod01 bdump]$ sar 5 20
Linux 2.6.18-238.5.1.el5 (prod01.globe.local)     03/27/2012

08:00:55 AM       CPU     %user     %nice   %system   %iowait    %steal     %idle
08:01:00 AM       all     99.20      0.00      0.80      0.00      0.00      0.00
08:01:05 AM       all     99.20      0.00      0.80      0.00      0.00      0.00
08:01:10 AM       all     99.80      0.00      0.20      0.00      0.00      0.00
08:01:15 AM       all     98.20      0.00      1.80      0.00      0.00      0.00
08:01:20 AM       all     99.40      0.00      0.60      0.00      0.00      0.00
08:01:25 AM       all     99.80      0.00      0.20      0.00      0.00      0.00
08:01:30 AM       all     99.60      0.00      0.40      0.00      0.00      0.00
08:01:35 AM       all     98.80      0.00      1.20      0.00      0.00      0.00
08:01:40 AM       all     98.00      0.00      2.00      0.00      0.00      0.00
08:01:45 AM       all    100.00      0.00      0.00      0.00      0.00      0.00
08:01:50 AM       all    100.00      0.00      0.00      0.00      0.00      0.00
08:01:55 AM       all     63.93      0.00      1.20     34.87      0.00      0.00
08:02:00 AM       all     92.03      0.00      0.80      7.17      0.00      0.00
08:02:05 AM       all     99.80      0.00      0.20      0.00      0.00      0.00
08:02:10 AM       all     99.60      0.00      0.40      0.00      0.00      0.00
08:02:15 AM       all     99.80      0.00      0.20      0.00      0.00      0.00
08:02:20 AM       all     99.40      0.00      0.60      0.00      0.00      0.00
08:02:25 AM       all     99.40      0.00      0.60      0.00      0.00      0.00
08:02:30 AM       all     99.20      0.00      0.80      0.00      0.00      0.00
08:02:35 AM       all     98.80      0.00      1.20      0.00      0.00      0.00
Average:          all     97.20      0.00      0.70      2.10      0.00      0.00
[oracle@prod01 bdump]$ sar 5 20
Linux 2.6.18-238.5.1.el5 (prod01.globe.local)     03/27/2012

08:03:50 AM       CPU     %user     %nice   %system   %iowait    %steal     %idle
08:03:55 AM       all      6.00      0.00      0.60     93.40      0.00      0.00
08:04:00 AM       all      8.42      0.00      0.80     90.78      0.00      0.00
08:04:05 AM       all     13.35      0.00      0.80     85.86      0.00      0.00
08:04:10 AM       all     27.51      0.00      0.20     72.29      0.00      0.00
08:04:15 AM       all      2.79      0.00      1.60     95.61      0.00      0.00
08:04:20 AM       all     58.80      0.00      1.20     40.00      0.00      0.00
08:04:25 AM       all     92.02      0.00      0.60      7.39      0.00      0.00
08:04:30 AM       all     99.20      0.00      0.80      0.00      0.00      0.00
08:04:35 AM       all     32.06      0.00      0.40     67.54      0.00      0.00
08:04:40 AM       all     77.64      0.00      1.20     21.16      0.00      0.00
08:04:45 AM       all     53.69      0.00      1.00     45.31      0.00      0.00
08:04:50 AM       all     40.40      0.00      0.80     58.80      0.00      0.00
08:04:55 AM       all     98.00      0.00      2.00      0.00      0.00      0.00
08:05:00 AM       all     70.34      0.00      1.20     28.46      0.00      0.00
08:05:05 AM       all     85.46      0.00      4.38     10.16      0.00      0.00
08:05:10 AM       all     69.46      0.00      0.60     29.94      0.00      0.00
08:05:15 AM       all     46.00      0.00      3.60     50.40      0.00      0.00
08:05:20 AM       all     71.34      0.00      1.00     27.66      0.00      0.00
08:05:25 AM       all     32.34      0.00      0.80     66.87      0.00      0.00
08:05:30 AM       all     18.40      0.00      1.20     80.40      0.00      0.00
Average:          all     50.16      0.00      1.24     48.60      0.00      0.00
[oracle@prod01 bdump]$ uname -a
Linux prod01.globe.local 2.6.18-238.5.1.el5 #1 SMP Mon Feb 21 05:52:39 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
[oracle@prod01 bdump]$

 

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