CPU Utilization

The sar utility from the sysstat collection gathers system activity numbers over time. The following sar snapshot taken from a dedicated Drupal server shows how the installation of MMCache can help reduce system load on even a heavily-optimized web server (MMCache was installed around 12:00PM):

11:

: 00:

00

AM

CPU

%user

%nice

%system

%idle

11:

: 10:

00

AM

all

3.71

0.00

1.85

94.44

11:

: 2 0:

00

AM

all

3.86

0.00

0.50

95.64

11:

: 30:

00

AM

all

4.49

0.00

0.33

95.18

11:

40:

00

AM

all

4.05

0.00

0.36

95.58

11:

: 50:

00

AM

all

3.76

0.00

0.36

95.88

12 :

: 00:

00

PM

all

3.38

0.00

0.52

96.11

12 :

: 10:

00

PM

all

0.52

0.00

0.10

99.38

12 :

: 2 0:

00

PM

all

0,

.79

0.

00

0.

20

99

. 01

12 :

: 3 0:

00

PM

all

0,

. 57

0.

00

0.

12

99

31

12 :

: 4 0:

00

PM

all

0,

59

0.

00

0.

12

99

29

12 :

: 50:

00

PM

all

0,

44

0.

00

0.

99.45

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