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 = 0.735442, $dem_order = 17.8611, $nusers = 247, $order_rate = 0.264558, $req_browse_read = 21.1824, $userThink = 1404.05 Convergence test value: 0.00648455 Number of iterations: 10 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 60 MVA Step(): 757 MVA Wait(): 74487 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(247) 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 1404.05 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 17.8611 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 0.735442 EAccess EOrder 0.264558 TStoreApp EBrowse EInvRd 21.1824 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 0.0284481 TWebServer EAccess 0.0211755 TImgDisk ERdImg 0.294168 TStoreApp EBrowse 0.0110493 EOrder 0.044211 TCart EBuy 0.00097389 TInvDB EInvRd 0.179372 EInvUpd 0.131256 TCustDB ECustRd 0.000941532 ECustUpd 0.000973884 TFS EFRd 0.333648 EFWrite 0.275917 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 6543.48 TWebServer EAccess ERdImg 0.226761 EAccess EBrowse 4817.6 EAccess EOrder 4817.6 TStoreApp EBrowse EInvRd 383.194 EOrder EBuy 112.004 TCart EBuy EInvRd 489.408 EBuy EInvUpd 489.408 TInvDB EInvRd EFRd 3.91798 EInvUpd EFRd 3.91798 0 EInvUpd EFWrite 0 2.16542 TCustDB ECustRd EFRd 1.99714 ECustUpd EFRd 1.99714 0 ECustUpd EFWrite 0 2.98834 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 55.3556 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 20022.2 TWebServer EAccess 12074.8 TImgDisk ERdImg 1 TStoreApp EBrowse 9024.43 EOrder 2266.94 TCart EBuy 2137.3 TInvDB EInvRd 42.1406 EInvUpd 23.2473 35.0654 TCustDB ECustRd 82.3957 ECustUpd 21.4353 25.8099 TFS EFRd 17.8518 EFWrite 5.9506 17.8518 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 1.14404e+009 2.85375 TWebServer EAccess 3.53616e+008 2.42533 TImgDisk ERdImg 1 1 TStoreApp EBrowse 8.84476e+007 1.08604 EOrder 1.51851e+007 2.95486 TCart EBuy 4.97421e+006 1.08891 TInvDB EInvRd 3068.4 1.72787 EInvUpd 1258.81 1442.46 0.794406 TCustDB ECustRd 9299.25 1.36974 ECustUpd 1086.44 885.067 0.883244 TFS EFRd 229.575 0.72038 EFWrite 25.5084 229.575 0.450238 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0123362 246.998 246.998 TWebServer EAccess 0.0123362 148.958 148.958 TImgDisk ERdImg 0.185056 0.185056 0.185056 TStoreApp EBrowse 0.00907319 81.8803 81.8803 EOrder 0.00326386 7.39898 7.39898 Total: 0.0123371 89.2793 89.2793 TCart EBuy 0.00326387 6.97588 6.97588 TInvDB EInvRd 0.201987 8.51185 8.51185 EInvUpd 0.00326393 0.0758774 0.114451 0.190328 Total: 0.205251 8.58772 0.114451 8.70217 TCustDB ECustRd 0 0 0 ECustUpd 0.00326387 0.0699622 0.0842404 0.154203 Total: 0.00326387 0.0699622 0.0842404 0.154203 TFS EFRd 0.314693 5.61783 5.61783 EFWrite 0.0134605 0.0800983 0.240295 0.320393 Total: 0.328154 5.69793 0.240295 5.93823 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 247 EUserBeh 17.3207 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.185056 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0246724 0.0505575 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.136098 0 EOrder 0.0582961 0 Task Total: 0.194394 TCart 0 10 EBuy 0.0979162 0 Processor Total: 0.29231 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.403973 0.955074 EInvUpd 0.0359032 0.477537 4.77537 Task Total: 0.439877 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0195832 0.586413 2.93207 Task Total: 0.0195832 Processor Total: 0.45946 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.944079 14.8518 EFWrite 0.0538422 4.95059 14.8518 Task Total: 0.997921