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 = 0.933947, $dem_order = 55.0801, $nusers = 77, $order_rate = 0.0660534, $req_browse_read = 3.08057, $userThink = 729.926 Convergence test value: 0.00870238 Number of iterations: 7 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 42 MVA Step(): 730 MVA Wait(): 171801 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(77) 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 729.926 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 55.0801 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 0.933947 EAccess EOrder 0.0660534 TStoreApp EBrowse EInvRd 3.08057 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 0.0121485 TWebServer EAccess 0.0246868 TImgDisk ERdImg 0.303375 TStoreApp EBrowse 0.0662423 EOrder 0.0406513 TCart EBuy 0.00244717 TInvDB EInvRd 0.170539 EInvUpd 0.123768 TCustDB ECustRd 0.00225323 ECustUpd 0.0024471 TFS EFRd 0.331833 EFWrite 0.276317 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 4.84658 EAccess EBrowse 0 EAccess EOrder 0 TStoreApp EBrowse EInvRd 102.538 EOrder EBuy 0 TCart EBuy EInvRd 126.156 EBuy EInvUpd 126.156 TInvDB EInvRd EFRd 4.72039 EInvUpd EFRd 4.72039 0 EInvUpd EFWrite 0 2.62586 TCustDB ECustRd EFRd 2.50079 ECustUpd EFRd 2.50079 0 ECustUpd EFWrite 0 3.31486 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 58.4177 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1301.71 TWebServer EAccess 571.812 TImgDisk ERdImg 1 TStoreApp EBrowse 463.461 EOrder 743.881 TCart EBuy 689.797 TInvDB EInvRd 43.1111 EInvUpd 23.785 36.1113 TCustDB ECustRd 83.3011 ECustUpd 21.6735 26.3373 TFS EFRd 17.5745 EFWrite 5.85816 17.5745 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 2.85753e+006 1.68641 TWebServer EAccess 837588 2.56167 TImgDisk ERdImg 1 1 TStoreApp EBrowse 322376 1.50085 EOrder 1.52304e+006 2.75236 TCart EBuy 493986 1.03818 TInvDB EInvRd 3190.52 1.71666 EInvUpd 1305.99 1534.71 0.791817 TCustDB ECustRd 9461.8 1.36355 ECustUpd 1099.83 923.154 0.877632 TFS EFRd 221.415 0.716875 EFWrite 24.6017 221.415 0.448047 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0591571 77.0054 77.0054 TWebServer EAccess 0.0591571 33.8267 33.8267 TImgDisk ERdImg 0.887266 0.887266 0.887266 TStoreApp EBrowse 0.0552439 25.6034 25.6034 EOrder 0.00390713 2.90644 2.90644 Total: 0.0591511 28.5098 28.5098 TCart EBuy 0.00390702 2.69505 2.69505 TInvDB EInvRd 0.181885 7.84125 7.84125 EInvUpd 0.00390669 0.0929207 0.141076 0.233996 Total: 0.185792 7.93417 0.141076 8.07524 TCustDB ECustRd 0 0 0 ECustUpd 0.00390702 0.084679 0.102901 0.18758 Total: 0.00390702 0.084679 0.102901 0.18758 TFS EFRd 0.309714 5.44306 5.44306 EFWrite 0.0168372 0.0986347 0.295904 0.394539 Total: 0.326551 5.54169 0.295904 5.83759 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 77 EUserBeh 43.1803 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.887266 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.118314 0.26519 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.828659 0 EOrder 0.215205 0 Task Total: 1.04386 TCart 0 10 EBuy 0.117211 2.07455 Processor Total: 1.16107 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.36377 0.980254 EInvUpd 0.0429736 0.490127 4.90127 Task Total: 0.406743 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0234421 0.598266 2.99133 Task Total: 0.0234421 Processor Total: 0.430185 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.929141 14.5745 EFWrite 0.0673486 4.85816 14.5745 Task Total: 0.99649