Generated by: lqns, version 6.0 Copyright the Real-Time and Distributed Systems Group, Department of Systems and Computer Engineering Carleton University, Ottawa, Ontario, Canada. K1S 5B6 Invoked as: lqns ecomm2011.xlqn Input: ecomm2011.xlqn Comment: ... Variables: $browse_rate = 0.753638, $dem_order = 28.4008, $nusers = 174, $order_rate = 0.246362, $req_browse_read = 19.5819, $userThink = 1961.47 Convergence test value: 0.00788527 Number of iterations: 10 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 60 MVA Step(): 747 MVA Wait(): 70618 Processor identifiers and scheduling algorithms: Processor Name Type Copies Scheduling PUsers Inf 1 DELAY PImgDisk Uni 1 FCFS PWebServer Uni 1 PS PStore Mult(3) 1 PS PDBs Uni 1 PS PFileServer Uni 1 PS Task information: Task Name Type Copies Processor Name Pri Entry List TUsers Ref(174) 1 PUsers 0 EUserBeh TWebServer Mult(150) 1 PWebServer 0 EAccess TImgDisk Uni 1 PImgDisk 0 ERdImg TStoreApp Mult(90) 1 PStore 0 EBrowse, EOrder TCart Mult(10) 1 PStore 0 EBuy TInvDB Mult(7) 1 PDBs 0 EInvRd, EInvUpd TCustDB Uni 1 PDBs 0 ECustRd, ECustUpd TFS Mult(10) 1 PFileServer 0 EFRd, EFWrite Entry execution demands: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1961.47 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 28.4008 TCart EBuy 30 TInvDB EInvRd 2 EInvUpd 1 10 TCustDB ECustRd 3 ECustUpd 1 5 TFS EFRd 3 EFWrite 1 3 Mean number of rendezvous from entry to entry: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 1 TWebServer EAccess ERdImg 15 EAccess EBrowse 0.753638 EAccess EOrder 0.246362 TStoreApp EBrowse EInvRd 19.5819 EOrder EBuy 1 TCart EBuy EInvRd 3 EBuy EInvUpd 1 TInvDB EInvRd EFRd 1.8 EInvUpd EFRd 1 0 EInvUpd EFWrite 0 2.5 TCustDB ECustRd EFRd 4 ECustUpd EFRd 1 0 ECustUpd EFWrite 0 2 Mean number of non-blocking sends from entry to entry: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 1 Phase type flags: All phases are stochastic. Squared coefficient of variation of execution segments: All executable segments are exponential. Open arrival rates per entry: All open arrival rates are 0. Type 1 throughput bounds: Task Name Entry Name Throughput TUsers EUserBeh 0.0117026 TWebServer EAccess 0.0202881 TImgDisk ERdImg 0.279801 TStoreApp EBrowse 0.0122568 EOrder 0.044962 TCart EBuy 0.000407964 TInvDB EInvRd 0.183136 EInvUpd 0.134469 TCustDB ECustRd 0.000402162 ECustUpd 0.000407964 TFS EFRd 0.334331 EFWrite 0.275658 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 483.025 TWebServer EAccess ERdImg 0.243334 EAccess EBrowse 4028.41 EAccess EOrder 4028.33 TStoreApp EBrowse EInvRd 381.815 EOrder EBuy 97.5385 TCart EBuy EInvRd 487.942 EBuy EInvUpd 487.943 TInvDB EInvRd EFRd 3.86943 EInvUpd EFRd 3.86943 0 EInvUpd EFWrite 0 2.13793 TCustDB ECustRd EFRd 1.97221 ECustUpd EFRd 1.97221 0 ECustUpd EFWrite 0 2.97241 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 55.1795 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 13316.3 TWebServer EAccess 10872 TImgDisk ERdImg 1 TStoreApp EBrowse 8315.48 EOrder 2256.76 TCart EBuy 2131.26 TInvDB EInvRd 42.0811 EInvUpd 23.2143 35.0027 TCustDB ECustRd 82.3612 ECustUpd 21.426 25.7854 TFS EFRd 17.8681 EFWrite 5.95604 17.8681 Service time variance (per phase) and squared coefficient of variation (over all phases): Task Name Entry Name Phase 1 Phase 2 coeff of var **2 TUsers EUserBeh 5.96942e+008 3.36642 TWebServer EAccess 2.90397e+008 2.45684 TImgDisk ERdImg 1 1 TStoreApp EBrowse 7.55802e+007 1.09303 EOrder 1.50158e+007 2.94833 TCart EBuy 4.9458e+006 1.08884 TInvDB EInvRd 3061.06 1.72861 EInvUpd 1255.98 1437.06 0.794591 TCustDB ECustRd 9293.76 1.37008 ECustUpd 1086.08 883.354 0.883586 TFS EFRd 230.061 0.720584 EFWrite 25.5623 230.061 0.450365 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0130665 173.997 173.997 TWebServer EAccess 0.0130665 142.059 142.059 TImgDisk ERdImg 0.196003 0.196003 0.196003 TStoreApp EBrowse 0.00984767 81.8881 81.8881 EOrder 0.00321917 7.26491 7.26491 Total: 0.0130668 89.153 89.153 TCart EBuy 0.00321918 6.86092 6.86092 TInvDB EInvRd 0.202499 8.52139 8.52139 EInvUpd 0.00321927 0.074733 0.112683 0.187416 Total: 0.205719 8.59613 0.112683 8.70881 TCustDB ECustRd 0 0 0 ECustUpd 0.00321918 0.0689742 0.0830078 0.151982 Total: 0.00321918 0.0689742 0.0830078 0.151982 TFS EFRd 0.314978 5.62807 5.62807 EFWrite 0.0132671 0.0790195 0.237059 0.316078 Total: 0.328245 5.70709 0.237059 5.94415 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 174 EUserBeh 25.6297 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.196003 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0261331 0.0536146 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.147715 0 EOrder 0.091427 0 Task Total: 0.239142 TCart 0 10 EBuy 0.0965755 0.0249822 Processor Total: 0.335718 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.404999 0.95357 EInvUpd 0.0354119 0.476785 4.76785 Task Total: 0.440411 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0193151 0.585693 2.92847 Task Total: 0.0193151 Processor Total: 0.459726 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.944935 14.8681 EFWrite 0.0530685 4.95604 14.8681 Task Total: 0.998003