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Data Tables

TABLE 3, TABLE 4, and TABLE 5 list the data collected in this case study.

TABLE 3 Disk and CPU Utilization Data

ssdl183

ssdl187

ssdl197

ssd311

cpu

rps

wps

util

rps

wps

util

rps

wps

util

rps

wps

util

us

sy

wt

Id

299

0

100.0

161

0

85.0

133

14

79.1

137

0

89.0

11

13

75

1

263

0

100.0

139

1

88.4

140

25

81.1

140

0

87.7

9

11

79

1

278

1

99.0

153

0

87.8

116

27

76.1

136

1

88.1

9

8

82

0

271

0

98.9

169

1

90.8

154

31

83.0

149

0

90.6

9

8

83

0

272

0

100.0

151

0

87.6

127

49

77.0

148

0

84.6

8

7

85

0


TABLE 4 Disk Busy Percentage and Average Service Time Data

device

%busy

avque

r+w/s

blks/s

avwait

avserv

ssd92,e

69

1.2

139

4457

0.0

8.6

ssd129

94

2.8

201

6434

0.0

14.0

ssd129,e

94

2.8

201

6434

0.0

14.0

ssd156

81

1.7

147

3703

0.0

11.6

ssd156,e

81

1.7

147

3703

0.0

11.6

ssd166

46

0.9

92

2950

0.0

9.2

ssd166,e

46

0.9

92

2950

0.0

9.2

ssd167

94

4.0

217

6936

0.0

18.5

ssd167,e

94

4.0

217

6936

0.0

18.5

ssd178,e

67

1.2

125

3986

0.0

9.4

ssd183

100

15.4

263

14829

0.0

58.4

ssd183,e

100

15.4

263

14829

0.0

58.4

ssd184

23

0.3

25

785

0.0

11.6

ssd187

91

2.8

138

4425

0.0

19.9

ssd187,e

91

2.8

138

4425

0.0

19.9

ssd189

31

0.4

27

879

0.0

14.1

ssd189,e

31

0.4

27

879

0.0

14.1

ssd191

92

3.8

191

6120

0.0

19.8

ssd191,e

92

3.8

191

6120

0.0

19.8


where:

us is the percentage of time the CPU spends running the user application.

sy is the percentage of time the CPU spends controlling the system.

wt is the percentage of time the CPU spends waiting for the disks to complete I/O.

Id is the percentage of time the CPU is idle. Subtracting this number from 100 will give the percent utilization.

%busy is how busy the disk drives are.

avque is the average number of I/Os that are waiting in queue to be serviced.

r+w/s is the total number of reads and writes (I/Os) done by the disks in the time interval chosen.

blks/s is the number of blocks per second transferred; the block length is usually 512 bytes or a multiple of 512 bytes.

TABLE 5 TNF Output Data

 

i/o rate

read pct

maximum iint_arr

average iint_arr

std_dev iint_arr

maximum resp_tme

average resp_tme

std_dev resp_tme

xfer size

maxq depth

avg random qdepth

busy %

%

total

3291.5

97.9

5.40

0.30

0.39

250.77

22.11

22.50

22152

124

72.80

75.56

100.00

c12t50020F2300006A96d0s4

170.9

99.9

202.58

5.83

13.02

187.35

34.57

28.79

38816

28

5.91

23.62

83.25

c12t50020F2300006AFDd0s4

168.6

83.3

58.82

5.92

6.56

42.07

10.88

5.27

13071

22

1.83

85.50

77.40

c12t50020F2300006BFCd0s4

176.1

99.9

125.78

5.67

8.14

129.38

21.84

14.67

28399

27

3.84

57.58

86.27

c12t50020F23000079F7d0s4

179.8

99.9

63.79

5.55

6.41

66.91

19.33

7.74

16539

21

3.47

99.72

91.77

c12t50020F23000084C9d0s4

24.3

99.4

428.91

41.05

52.55

39.96

14.12

4.44

16336

4

0.34

99.71

28.65

c12t50020F23000084D9d0s4

151.5

99.9

86.82

6.59

7.28

65.63

20.07

7.53

16421

17

3.04

99.60

90.41

c13t50020F2300003503d1s4

29.9

99.3

353.22

33.33

39.00

31.19

9.71

4.00

16333

5

0.29

99.34

24.50

c13t50020F2300003E49d0s4

270.2

99.9

79.76

3.69

6.46

250.77

58.03

39.62

28656

42

15.68

40.48

99.27

c13t50020F23000059EEd0s4

141.6

99.9

84.13

7.05

7.83

83.78

19.15

7.02

16454

15

2.71

99.44

88.62

c13t50020F2300006C3Bd1s4

84.4

99.7

101.14

11.82

12.28

46.46

9.70

3.76

16607

11

0.81

99.19

52.11

c14t50020F230000BF7Ed0s4

17.9

95.0

528.77

55.24

66.18

49.55

10.58

5.07

16121

5

0.19

99.13

16.72

c14t50020F230000C18Dd0s4

19.6

99.5

534.99

50.81

59.42

42.35

11.93

4.11

16348

4

0.23

99.85

20.64

c14t50020F230000DDD0d0s4

67.1

99.7

187.87

14.86

16.31

39.74

9.22

3.40

16607

10

0.61

99.20

42.32

c14t50020F230000E17Cd0s4

13.9

99.0

1155.20

71.57

93.39

36.89

9.99

4.45

16475

4

0.13

98.98

12.56

c15t50020F2300004442d0s4

22.6

99.6

448.67

43.96

52.30

38.18

13.47

4.41

16334

4

0.30

99.93

25.89

c15t50020F23000097ACd0s4

199.3

99.9

54.94

5.01

5.94

66.57

17.57

7.73

16412

23

3.50

99.39

90.17

c15t50020F23000097ACd1s4

87.8

99.9

106.51

11.37

12.43

39.06

8.52

3.21

16376

11

0.74

99.71

49.53

c16t50020F230000528Cd0s4

3.8

97.0

1876.53

260.92

392.30

35.89

5.67

5.30

16748

2

0.02

97.77

2.13

c16t50020F23000069B0d0s4

55.7

99.5

240.65

17.93

23.01

32.98

12.72

4.00

16322

7

0.70

99.59

49.21

c16t50020F230000BDF5d0s4

30.2

99.5

346.84

33.04

40.45

53.23

12.27

4.65

16345

4

0.37

99.76

30.00

c17t50020F2300005720d1s4

174.3

82.6

82.12

5.73

6.32

42.94

10.69

5.22

12997

32

1.86

84.44

78.04

c17t50020F230000629Bd1s4

5.8

43.9

3817.82

169.20

366.20

35.45

8.31

5.29

34241

11

0.04

56.79

3.40

c17t50020F2300006ADEd1s4

221.9

99.9

79.71

4.50

6.76

158.83

28.91

20.97

28627

36

6.41

51.05

93.78

c17t50020F2300006C1Bd1s4

210.6

99.9

190.50

4.73

10.56

243.25

36.53

30.79

38451

34

7.69

22.94

89.09

c17t50020F2300007C4Ad1s4

14.9

98.9

759.66

66.88

92.67

43.80

12.66

5.19

16433

4

0.18

97.54

16.51

c17t50020F23000086B7d1s4

26.4

99.6

483.71

37.76

46.38

45.23

14.97

4.37

16340

5

0.39

99.84

32.35

c18t50020F2300004359d1s4

74.5

99.8

130.16

13.40

13.99

40.73

11.42

4.23

16491

12

0.85

98.99

55.09

c19t50020F230000A6B7d1s4

4.0

97.5

2534.77

245.34

390.26

31.79

5.91

5.53

16185

2

0.02

97.92

2.39

c19t50020F230000B56Cd1s4

88.0

99.7

121.12

11.34

11.76

58.36

15.74

6.51

16379

9

1.38

99.47

71.46

c19t50020F230000C01Cd1s4

18.9

98.8

677.92

52.63

66.50

37.31

11.54

4.09

16286

3

0.21

99.62

19.23

c7t50020F2300003BDEd1s4

123.5

99.8

805.88

8.07

23.61

195.14

31.30

25.04

42903

24

3.86

17.35

66.57

c7t50020F230000514Fd1s4

30.9

99.4

815.84

32.26

45.45

47.66

15.33

4.27

16339

4

0.47

99.63

37.45

c7t50020F230000647Dd0s4

189.4

99.9

51.30

5.27

5.65

54.09

14.25

5.71

16489

17

2.70

99.19

89.07

c8t50020F230000A6BEd1s4

2.0

96.5

4325.08

481.07

745.10

40.51

8.45

4.55

16099

2

0.01

99.30

1.70

c8t50020F230000BCB0d1s4

110.5

99.8

71.93

9.04

9.28

35.24

9.57

3.76

16603

13

1.05

99.18

61.34

c8t50020F230000C0F4d1s4

16.9

99.1

477.62

58.80

70.83

47.08

11.78

4.08

16316

5

0.20

99.58

17.75

c8t50020F230000DF81d1s4

17.1

99.4

781.56

58.19

90.76

34.54

8.60

4.37

16336

3

0.14

99.50

13.74

c8t50020F230000E37Ed1s4

44.1

99.7

197.25

22.61

24.94

38.05

9.67

3.80

16619

10

0.42

99.04

31.20

Controller No.

 

 

 

 

 

 

 

 

 

 

 

 

 

c_7

344.0

99.8

49.38

2.90

3.76

195.14

20.47

17.62

25963

34

7.04

75.56

97.81

c_8

190.8

99.7

57.60

5.23

5.59

47.08

9.69

3.93

16552

14

1.85

75.56

81.10

c_12

871.5

96.6

17.90

1.14

1.51

187.35

21.17

17.10

22608

51

18.45

75.56

99.98

c_13

526.3

99.8

30.31

1.89

2.57

250.77

37.06

36.02

22737

46

19.50

75.56

99.96

c_14

118.7

98.9

100.69

8.40

9.41

49.55

9.96

4.07

16472

13

1.18

75.56

66.78

c_15

310.0

99.8

40.19

3.22

3.65

66.57

14.70

7.69

16393

26

4.55

75.56

96.23

c_16

89.8

99.2

149.04

11.11

12.89

53.23

12.25

4.53

16332

8

1.10

75.56

65.09

c_17

654.2

94.7

24.75

1.52

2.16

243.25

25.39

23.99

26898

55

16.61

75.56

99.88

c_18

74.6

99.6

130.16

13.38

13.98

40.73

11.41

4.25

16477

12

0.85

75.56

55.10

c_19

111.1

99.4

121.12

8.98

9.66

58.36

14.65

6.57

16344

9

1.62

75.56

77.42


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