Advanced POWER Virtualization on IBM System p5 - Previous ...

Example 5-40 shows the output of the mpstat -a command. Because the output
is very wide, the result has been split into three sets of columns, with the CPU
column repeated in each output. The meaning of each column is given in
Table 5-2.
Example 5-40 mpstat command
# mpstat -a
System configuration: lcpu=2 ent=0.5
cpu min maj mpcs mpcr dev soft dec ph cs ics bound
0 134 3 0 0 2 0 105 0 90 47 0
1 88 0 0 0 2 54 122 0 9 6 0
U - - - - - - - - - - -
ALL 222 3 0 0 4 54 227 0 99 53 0
cpu rq push S3pull S3grd S0rd S1rd S2rd S3rd S4rd S5rd
0 0 0 0 0 98.8 1.2 0.0 0.0 0.0 0.0
1 0 0 0 0 90.8 9.2 0.0 0.0 0.0 0.0
U - - - - - - - - -
ALL 0 0 0 0 97.7 2.3 0.0 0.0 0.0 0.0
cpu sysc us sy wa id pc %ec ilcs vlcs
0 205 5.1 84.2 0.3 10.4 0.01 2.1 11 173
1 47 6.3 72.7 0.2 20.8 0.01 1.4 4 157
U - - - 0.3 96.1 0.48 96.4 - -
ALL 252 0.2 2.8 0.4 96.6 0.02 3.6 15 330
Table 5-2 mpstat output interpretation
Column Measured parameter Comments
cpu The logical CPU ID. The U shows the unused CPUs.
min/maj Minor and major page faults. A minor page fault causes no disk
I/O, a major page fault does.
mpcr
mpcs
dev
soft
Number of mpc interrupts sent
(mpcs) and received (mpcr).
Number of device initiated
interrupts.
Number of software initiated
interrupts.
mpc interrupts is used for
inter-processor communication.
Hardware interrupt.
dec Number of decrementer interrupts. Timer interrupt.
Chapter 5. System management 341