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 = 0.811923, $dem_order = 32.0412, $nusers = 85, $order_rate = 0.188077, $req_browse_read = 8.7969, $userThink = 1728.68 Convergence test value: 0.00413209 Number of iterations: 8 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 717 MVA Wait(): 139730 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(85) 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 1728.68 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 32.0412 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 0.811923 EAccess EOrder 0.188077 TStoreApp EBrowse EInvRd 8.7969 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 0.00427676 TWebServer EAccess 0.0120313 TImgDisk ERdImg 0.170937 TStoreApp EBrowse 0.0261807 EOrder 0.0434763 TCart EBuy 0.000891836 TInvDB EInvRd 0.179903 EInvUpd 0.131708 TCustDB ECustRd 0.000864622 ECustUpd 0.000891837 TFS EFRd 0.333747 EFWrite 0.275884 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0.322157 TWebServer EAccess ERdImg 0.539064 EAccess EBrowse 0 EAccess EOrder 0 TStoreApp EBrowse EInvRd 180.248 EOrder EBuy 2.70137 TCart EBuy EInvRd 222.542 EBuy EInvUpd 222.542 TInvDB EInvRd EFRd 5.24759 EInvUpd EFRd 5.24759 0 EInvUpd EFWrite 0 2.92611 TCustDB ECustRd EFRd 2.73086 ECustUpd EFRd 2.73086 0 ECustUpd EFWrite 0 3.46194 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 60.8056 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 3574.89 TWebServer EAccess 1845.91 TImgDisk ERdImg 1 TStoreApp EBrowse 1985.55 EOrder 1110.11 TCart EBuy 1076.03 TInvDB EInvRd 43.7953 EInvUpd 24.1642 36.8147 TCustDB ECustRd 83.5965 ECustUpd 21.7548 26.5644 TFS EFRd 17.4183 EFWrite 5.80609 17.4183 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 2.67625e+007 2.09412 TWebServer EAccess 1.05717e+007 3.10258 TImgDisk ERdImg 1 1 TStoreApp EBrowse 4.69875e+006 1.19185 EOrder 3.62373e+006 2.94052 TCart EBuy 1.2277e+006 1.06033 TInvDB EInvRd 3281.31 1.71077 EInvUpd 1341.58 1599.12 0.790845 TCustDB ECustRd 9509.72 1.36079 ECustUpd 1103 939.535 0.874843 TFS EFRd 216.886 0.714862 EFWrite 24.0985 216.886 0.446788 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0237768 84.9995 84.9995 TWebServer EAccess 0.0237768 43.8899 43.8899 TImgDisk ERdImg 0.356688 0.356688 0.356688 TStoreApp EBrowse 0.0193069 38.3347 38.3347 EOrder 0.00447233 4.96477 4.96477 Total: 0.0237792 43.2994 43.2994 TCart EBuy 0.00447234 4.81238 4.81238 TInvDB EInvRd 0.183245 8.02529 8.02529 EInvUpd 0.00447193 0.108061 0.164633 0.272694 Total: 0.187717 8.13335 0.164633 8.29799 TCustDB ECustRd 0 0 0 ECustUpd 0.00447234 0.0972948 0.118805 0.2161 Total: 0.00447234 0.0972948 0.118805 0.2161 TFS EFRd 0.306475 5.33827 5.33827 EFWrite 0.019054 0.110629 0.331888 0.442517 Total: 0.325529 5.4489 0.331888 5.78078 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 85 EUserBeh 41.1025 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.356688 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0475536 0.0985772 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.289603 0 EOrder 0.143299 0 Task Total: 0.432902 TCart 0 10 EBuy 0.13417 0.333826 Processor Total: 0.567072 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.366491 0.996845 EInvUpd 0.0491912 0.498422 4.98422 Task Total: 0.415682 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.026834 0.605671 3.02835 Task Total: 0.026834 Processor Total: 0.442516 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.919425 14.4183 EFWrite 0.0762161 4.80609 14.4183 Task Total: 0.995641