xii
4.6 Average Latency and Throughput of a 32 node Application Server . . .
62
4.7 Normalized Breakdown of the CPU Time in a Server, The Bars Represent
the Values for the ssl with bf, ssl with session and RR from Left to Right.
64
4.8 Impact of Session Period on Performance (Node=32) . . . . . . . . . . .
67
4.9 Latency and Throughput Variation with File Size (N=32, k=20) . . . .
68
4.10 Latency and Throughput of Homogeneous and Mixed Client Models . .
69
5.1 HTTP Processing Steps in a Distributed Web Server for Local Cache
Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
78
5.2 HTTP Processing Steps in the Distributed Web Server for Remote Cache
Requests through Intra cluster Communication . . . . . . . . . . . . . .
79
5.3 Cache Placement Policy . . . . . . . . . . . . . . . . . . . . . . . . . . .
81
5.4 local NIC read Processing Steps . . . . . . . . . . . . . . . . . . . . . .
84
5.5 Number of References of Ranked Documents . . . . . . . . . . . . . . .
93
5.6 The Cache Hit Ratio as a Function of the Cache Size . . . . . . . . . . .
94
5.7 File Sizes of Ranked Documents . . . . . . . . . . . . . . . . . . . . . . .
95
5.8 Simulator Validation with the Prototype and PRESS . . . . . . . . . . .
99
5.9 Impact on Cache Hit Ratio due to NIC Caching . . . . . . . . . . . . . .
109
5.10 Throughput Comparison with the Exclusive Caching Scheme . . . . . .
110
5.11 Throughput Comparison with the Inclusive Caching Scheme . . . . . . .
111
5.12 UCB Performance with PCI64bit 66MHz, PCI X, PCI Express and Mem
ory Attached When the Exclusive Caching Scheme is Used . . . . . . . .
112