6.2 Session of 3 frontends and five web services

This session is meant to illustrate the types of savings available from caching discovery results.

The three frontends are all accessed in the same single sign-on session, leading to savings at IdP. Each frontend then calls two web services. One (A) is common, shared web service. Other (B) is new web service (new for each frontend), but the service is called 4 times, which leads to EPR cache hits. The pattern also encourages TLS cache hits. We also assume repeated calls to PDP and audit bus lead to TLS cache hits.

Table 9:Table 6.6: Cost of TAS³ multi use scenario

Operation IdP + Disc. Frontend FE PDP Responders Rs PDPs Audit Bus Audit Bus PDP

1. SSO w/auth 2T+4S+4X=11 4T+3S+5X=14 2T+2S+3X+Z=8.5 4(2T+S+3X)=28 4(t+2X+Z)=10

2. Discovery A 2t+3S+3X=6 T+S+X=3.5 2t+S+3X=4 t+2X+Z=2.5

3. Trust & Priv. T+2X=3.5 2T+S+3X=7 2T+S+3X=7 t+2X+Z=2.5

4. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

5. Send request T+t+2S+2X=5.5 T+t+3S+3X=7.5 2(2t+S+3X)=8 2(t+2X+Z)=5

6. Rs In PEP T+2X=3.5 2T+2S+4X+Z=9.5 2t+S+3X=4 t+2X+Z=2.5

7. Payload

8. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

9. Send response t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

10. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

11. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

12. Discovery B 2t+3S+3X=6 T+S+X=3.5 2t+S+3X=4 t+2X+Z=2.5

13. Trust & Priv. T+2X=3.5 2T+S+3X=7 2T+S+3X=7 t+2X+Z=2.5

14. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

15. Send request T+t+2S+2X=5.5 T+t+3S+3X=7.5 2(2t+S+3X)=8 2(t+2X+Z)=5

16. Rs In PEP T+2X=3.5 2T+2S+4X+Z=9.5 2t+S+3X=4 t+2X+Z=2.5

17. Payload

18. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

19. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

20. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

21. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

22. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

23. Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

24. Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

25. Payload

26. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

27. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

28. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

29. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

Operation	IdP + Disc.	Frontend	FE PDP	Responders	Rs PDPs	Audit Bus	Audit Bus PDP
1. SSO `w/auth`	2T+4S+4X=11	4T+3S+5X=14	2T+2S+3X+Z=8.5			4(2T+S+3X)=28	4(t+2X+Z)=10
2. Discovery A	2t+3S+3X=6	T+S+X=3.5				2t+S+3X=4	t+2X+Z=2.5
3. Trust & Priv.	T+2X=3.5				2T+S+3X=7	2T+S+3X=7	t+2X+Z=2.5
4. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
5. Send request		T+t+2S+2X=5.5		T+t+3S+3X=7.5		2(2t+S+3X)=8	2(t+2X+Z)=5
6. Rs In PEP				T+2X=3.5	2T+2S+4X+Z=9.5	2t+S+3X=4	t+2X+Z=2.5
7. Payload
8. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
9. Send response		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
10. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
11. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
12. Discovery B	2t+3S+3X=6	T+S+X=3.5				2t+S+3X=4	t+2X+Z=2.5
13. Trust & Priv.	T+2X=3.5				2T+S+3X=7	2T+S+3X=7	t+2X+Z=2.5
14. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
15. Send request		T+t+2S+2X=5.5		T+t+3S+3X=7.5		2(2t+S+3X)=8	2(t+2X+Z)=5
16. Rs In PEP				T+2X=3.5	2T+2S+4X+Z=9.5	2t+S+3X=4	t+2X+Z=2.5
17. Payload
18. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
19. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
20. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
21. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
22. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
23. Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
24. Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
25. Payload
26. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
27. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
28. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
29. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5

Table 10:Table 6.6 (continued): Cost of TAS³ multi use scenario

Operation IdP + Disc. Frontend FE PDP Responders Rs PDPs Audit Bus Audit Bus PDP

30. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

31. Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

32. Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

33. Payload

34. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

35. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

36. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

37. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

38. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

39. Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

40. Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

41. Payload

42. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

43. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

44. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

45. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

46. SSO ses act t+4S+4X=8 4T+3S+5X=14 2T+2S+3X+Z=8.5 4(2T+S+3X)=28 4(t+2X+Z)=10

47. Discovery A 2t+3S+3X=6 T+S+X=3.5 2t+S+3X=4 t+2X+Z=2.5

48. Trust & Priv. T+2X=3.5 2T+S+3X=7 2T+S+3X=7 t+2X+Z=2.5

49. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

50. Send request T+t+2S+2X=5.5 T+t+3S+3X=7.5 2(2t+S+3X)=8 2(t+2X+Z)=5

51. Rs In PEP T+2X=3.5 2T+2S+4X+Z=9.5 2t+S+3X=4 t+2X+Z=2.5

52. Payload

53. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

54. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

55. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

56. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

57. Discovery C 2t+3S+3X=6 T+S+X=3.5 2t+S+3X=4 t+2X+Z=2.5

58. Trust & Priv. T+2X=3.5 2T+S+3X=7 2T+S+3X=7 t+2X+Z=2.5

59. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

60. Send request T+t+2S+2X=5.5 T+t+3S+3X=7.5 2(2t+S+3X)=8 2(t+2X+Z)=5

61. Rs In PEP T+2X=3.5 2T+2S+4X+Z=9.5 2t+S+3X=4 t+2X+Z=2.5

62. Payload

63. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

64. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

65. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

66. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

67. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

68. Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

69. Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

70. Payload

71. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

72. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

73. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

74. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

75. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

76. Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

77. Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

78. Payload

79. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

80. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

81. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

82. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

83. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

84. Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

85. Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

86. Payload

87. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

88. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

89. Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

90. Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

Operation	IdP + Disc.	Frontend	FE PDP	Responders	Rs PDPs	Audit Bus	Audit Bus PDP
30. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
31. Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
32. Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
33. Payload
34. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
35. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
36. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
37. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
38. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
39. Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
40. Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
41. Payload
42. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
43. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
44. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
45. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
46. SSO ses act	t+4S+4X=8	4T+3S+5X=14	2T+2S+3X+Z=8.5			4(2T+S+3X)=28	4(t+2X+Z)=10
47. Discovery A	2t+3S+3X=6	T+S+X=3.5				2t+S+3X=4	t+2X+Z=2.5
48. Trust & Priv.	T+2X=3.5				2T+S+3X=7	2T+S+3X=7	t+2X+Z=2.5
49. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
50. Send request		T+t+2S+2X=5.5		T+t+3S+3X=7.5		2(2t+S+3X)=8	2(t+2X+Z)=5
51. Rs In PEP				T+2X=3.5	2T+2S+4X+Z=9.5	2t+S+3X=4	t+2X+Z=2.5
52. Payload
53. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
54. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
55. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
56. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
57. Discovery C	2t+3S+3X=6	T+S+X=3.5				2t+S+3X=4	t+2X+Z=2.5
58. Trust & Priv.	T+2X=3.5				2T+S+3X=7	2T+S+3X=7	t+2X+Z=2.5
59. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
60. Send request		T+t+2S+2X=5.5		T+t+3S+3X=7.5		2(2t+S+3X)=8	2(t+2X+Z)=5
61. Rs In PEP				T+2X=3.5	2T+2S+4X+Z=9.5	2t+S+3X=4	t+2X+Z=2.5
62. Payload
63. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
64. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
65. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
66. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
67. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
68. Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
69. Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
70. Payload
71. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
72. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
73. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
74. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
75. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
76. Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
77. Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
78. Payload
79. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
80. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
81. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
82. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
83. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
84. Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
85. Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
86. Payload
87. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
88. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
89. Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
90. Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5

Table 11:Table 6.6 (continued): Cost of TAS³ multi use scenario

Operation IdP + Disc. Frontend FE PDP Responders Rs PDPs Audit Bus Audit Bus PDP

91. SSO ses act t+4S+4X=8 4T+3S+5X=14 2T+2S+3X+Z=8.5 4(2T+S+3X)=28 4(t+2X+Z)=10

92. Discovery A 2t+3S+3X=6 T+S+X=3.5 2t+S+3X=4 t+2X+Z=2.5

93. Trust & Priv. T+2X=3.5 2T+S+3X=7 2T+S+3X=7 t+2X+Z=2.5

94. Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

95. Send request T+t+2S+2X=5.5 T+t+3S+3X=7.5 2(2t+S+3X)=8 2(t+2X+Z)=5

96. Rs In PEP T+2X=3.5 2T+2S+4X+Z=9.5 2t+S+3X=4 t+2X+Z=2.5

97. Payload

98. Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

99. Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

100 Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

101 Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

102 Discovery D 2t+3S+3X=6 T+S+X=3.5 2t+S+3X=4 t+2X+Z=2.5

103 Trust & Priv. T+2X=3.5 2T+S+3X=7 2T+S+3X=7 t+2X+Z=2.5

104 Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

105 Send request T+t+2S+2X=5.5 T+t+3S+3X=7.5 2(2t+S+3X)=8 2(t+2X+Z)=5

106 Rs In PEP T+2X=3.5 2T+2S+4X+Z=9.5 2t+S+3X=4 t+2X+Z=2.5

107 Payload

108 Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

109 Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

110 Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

111 Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

112 Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

113 Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

114 Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

115 Payload

116 Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

117 Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

118 Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

119 Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

120 Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

121 Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

122 Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

123 Payload

124 Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

125 Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

126 Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

127 Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

128 Rq Out PEP t+2X=2 2t+2S+4X+1Z=6.5 2t+S+3X=4 t+2X+Z=2.5

129 Send request 2t+2S+2X=4 2t+3S+3X=6 2(2t+S+3X)=8 2(t+2X+Z)=5

130 Rs In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

131 Payload

132 Rs Out PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

133 Send respons t+2S+2X=4 t+2S+2X=4 2(2t+S+3X)=8 2(t+2X+Z)=5

134 Rq In PEP t+2X=2 2t+2S+4X+Z=6.5 2t+S+3X=4 t+2X+Z=2.5

135 Process Obli 2t+S+2X=3 2t+S+2X=3 2(2t+S+3X)=8 2(t+2X+Z)=5

136 SLO 2T+2S+3X=8 2T+2S+3X=8 2(2t+S+3X)=8 2(T+2X+Z)=8

TOTAL 10T+32S+45X 26T+92S+174X 6T+66S+129X+33Z 12T+90S+165X 24T+66S+138X+30Z 36T+176S+528X T+352X+176Z

TOTAL RSA =92 =305 =220.5 =273 =255 =758 =443

Operation	IdP + Disc.	Frontend	FE PDP	Responders	Rs PDPs	Audit Bus	Audit Bus PDP
91. SSO ses act	t+4S+4X=8	4T+3S+5X=14	2T+2S+3X+Z=8.5			4(2T+S+3X)=28	4(t+2X+Z)=10
92. Discovery A	2t+3S+3X=6	T+S+X=3.5				2t+S+3X=4	t+2X+Z=2.5
93. Trust & Priv.	T+2X=3.5				2T+S+3X=7	2T+S+3X=7	t+2X+Z=2.5
94. Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
95. Send request		T+t+2S+2X=5.5		T+t+3S+3X=7.5		2(2t+S+3X)=8	2(t+2X+Z)=5
96. Rs In PEP				T+2X=3.5	2T+2S+4X+Z=9.5	2t+S+3X=4	t+2X+Z=2.5
97. Payload
98. Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
99. Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
100 Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
101 Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
102 Discovery D	2t+3S+3X=6	T+S+X=3.5				2t+S+3X=4	t+2X+Z=2.5
103 Trust & Priv.	T+2X=3.5				2T+S+3X=7	2T+S+3X=7	t+2X+Z=2.5
104 Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
105 Send request		T+t+2S+2X=5.5		T+t+3S+3X=7.5		2(2t+S+3X)=8	2(t+2X+Z)=5
106 Rs In PEP				T+2X=3.5	2T+2S+4X+Z=9.5	2t+S+3X=4	t+2X+Z=2.5
107 Payload
108 Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
109 Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
110 Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
111 Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
112 Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
113 Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
114 Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
115 Payload
116 Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
117 Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
118 Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
119 Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
120 Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
121 Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
122 Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
123 Payload
124 Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
125 Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
126 Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
127 Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
128 Rq Out PEP		t+2X=2	2t+2S+4X+1Z=6.5			2t+S+3X=4	t+2X+Z=2.5
129 Send request		2t+2S+2X=4		2t+3S+3X=6		2(2t+S+3X)=8	2(t+2X+Z)=5
130 Rs In PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
131 Payload
132 Rs Out PEP				t+2X=2	2t+2S+4X+Z=6.5	2t+S+3X=4	t+2X+Z=2.5
133 Send respons		t+2S+2X=4		t+2S+2X=4		2(2t+S+3X)=8	2(t+2X+Z)=5
134 Rq In PEP		t+2X=2	2t+2S+4X+Z=6.5			2t+S+3X=4	t+2X+Z=2.5
135 Process Obli		2t+S+2X=3		2t+S+2X=3		2(2t+S+3X)=8	2(t+2X+Z)=5
136 SLO	2T+2S+3X=8	2T+2S+3X=8				2(2t+S+3X)=8	2(T+2X+Z)=8
TOTAL	10T+32S+45X	26T+92S+174X	6T+66S+129X+33Z	12T+90S+165X	24T+66S+138X+30Z	36T+176S+528X	T+352X+176Z
TOTAL RSA	=92	=305	=220.5	=273	=255	=758	=443

This sequence of 15 web service calls has grand total of 116T+522S+1531X+239Z=2346.5 RSA equivalents, which works out to about 156 RSA equivalents per web service call. As can be seen the cache effects and amortization of the SSO and discovery over several calls makes a significant impact. The amortized cost is 58% of the single call cost. Effectively the amortized calls are 18 times heavier than plain web service calls.

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