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 = 0.982435, $dem_order = 63.1581, $nusers = 51, $order_rate = 0.0175645, $req_browse_read = 8.81245, $userThink = 449.553 Convergence test value: 0.00815144 Number of iterations: 7 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 42 MVA Step(): 477 MVA Wait(): 52783 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(51) 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 449.553 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 63.1581 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 0.982435 EAccess EOrder 0.0175645 TStoreApp EBrowse EInvRd 8.81245 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 0.0166245 TWebServer EAccess 0.0516591 TImgDisk ERdImg 0.408667 TStoreApp EBrowse 0.0305782 EOrder 0.0472641 TCart EBuy 0.000581521 TInvDB EInvRd 0.18195 EInvUpd 0.133454 TCustDB ECustRd 0.00056981 ECustUpd 0.00058152 TFS EFRd 0.334121 EFWrite 0.275745 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.629521 EAccess EBrowse 0 EAccess EOrder 0 TStoreApp EBrowse EInvRd 124.728 EOrder EBuy 0 TCart EBuy EInvRd 164.846 EBuy EInvUpd 164.846 TInvDB EInvRd EFRd 0.627621 EInvUpd EFRd 0.627621 0 EInvUpd EFWrite 0 0.340104 TCustDB ECustRd EFRd 0.329519 ECustUpd EFRd 0.329519 0 ECustUpd EFWrite 0 1.93806 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 46.1509 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1917.84 TWebServer EAccess 1468.02 TImgDisk ERdImg 1 TStoreApp EBrowse 1451.38 EOrder 886.96 TCart EBuy 825.571 TInvDB EInvRd 38.3138 EInvUpd 21.1262 31.0758 TCustDB ECustRd 80.5769 ECustUpd 20.9338 24.2837 TFS EFRd 19.0647 EFWrite 6.35489 19.0647 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 1.24451e+007 3.38358 TWebServer EAccess 6.61373e+006 3.06891 TImgDisk ERdImg 1 1 TStoreApp EBrowse 2.50118e+006 1.18736 EOrder 2.18509e+006 2.77754 TCart EBuy 716736 1.0516 TInvDB EInvRd 2646.17 1.80263 EInvUpd 1101.13 1127.45 0.817815 TCustDB ECustRd 9065.88 1.39633 ECustUpd 1081 785.111 0.912694 TFS EFRd 267.074 0.734806 EFWrite 29.6749 267.074 0.459254 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0265949 51.0047 51.0047 TWebServer EAccess 0.0265949 39.0418 39.0418 TImgDisk ERdImg 0.398945 0.398945 0.398945 TStoreApp EBrowse 0.0261292 37.9233 37.9233 EOrder 0.000467152 0.414345 0.414345 Total: 0.0265963 38.3376 38.3376 TCart EBuy 0.000467152 0.385667 0.385667 TInvDB EInvRd 0.231662 8.87586 8.87586 EInvUpd 0.00046715 0.00986908 0.0145171 0.0243862 Total: 0.232129 8.88573 0.0145171 8.90024 TCustDB ECustRd 0 0 0 ECustUpd 0.000467152 0.00977926 0.0113442 0.0211234 Total: 0.000467152 0.00977926 0.0113442 0.0211234 TFS EFRd 0.331996 6.32939 6.32939 EFWrite 0.0018619 0.0118322 0.0354966 0.0473288 Total: 0.333858 6.34122 0.0354966 6.37672 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 51 EUserBeh 11.9558 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.398945 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0531899 0.10993 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.391937 0 EOrder 0.0295044 0 Task Total: 0.421442 TCart 0 10 EBuy 0.0140146 0.119853 Processor Total: 0.435456 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.463324 0.867668 EInvUpd 0.00513865 0.433834 4.33834 Task Total: 0.468462 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00280291 0.539548 2.69774 Task Total: 0.00280291 Processor Total: 0.471265 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.995987 16.0647 EFWrite 0.00744761 5.35489 16.0647 Task Total: 1.00343