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 -a -w ecomm2011.xlqn Input: ecomm2011.xlqn Comment: ... Variables: $browse_rate = 0.877867, $dem_order = 4.1787, $nusers = 168, $order_rate = 0.122133, $req_browse_read = 19.0242, $userThink = 1160.12 Convergence test value: 0.00864434 Number of iterations: 11 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 66 MVA Step(): 1052 MVA Wait(): 186649 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(168) 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 1160.12 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 4.1787 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 0.877867 EAccess EOrder 0.122133 TStoreApp EBrowse EInvRd 19.0242 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 0.131574 TWebServer EAccess 0.0969825 TImgDisk ERdImg 0.174582 TStoreApp EBrowse 0.0533409 EOrder 0.0589955 TCart EBuy 0.00159224 TInvDB EInvRd 0.0778524 EInvUpd 0.0694046 TCustDB ECustRd 0.00157593 ECustUpd 0.00159225 TFS EFRd 0.147499 EFWrite 0.144094 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 715.239 TWebServer EAccess ERdImg 0.241742 EAccess EBrowse 4155.29 EAccess EOrder 4154.49 TStoreApp EBrowse EInvRd 354.343 EOrder EBuy 0.359519 TCart EBuy EInvRd 462.547 EBuy EInvUpd 462.547 TInvDB EInvRd EFRd 2.01835 EInvUpd EFRd 2.01835 0 EInvUpd EFWrite 0 1.10249 TCustDB ECustRd EFRd 1.03177 ECustUpd EFRd 1.03177 0 ECustUpd EFWrite 0 2.37676 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 49.4687 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 12895.4 TWebServer EAccess 11020 TImgDisk ERdImg 1 TStoreApp EBrowse 7514.67 EOrder 2026.29 TCart EBuy 2021.83 TInvDB EInvRd 39.8809 EInvUpd 21.9949 32.7 TCustDB ECustRd 81.2311 ECustUpd 21.1171 24.9009 TFS EFRd 18.526 EFWrite 6.17533 18.526 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 6.07266e+008 3.65185 TWebServer EAccess 3.0287e+008 2.49399 TImgDisk ERdImg 1 1 TStoreApp EBrowse 6.18678e+007 1.09558 EOrder 1.26439e+007 3.07948 TCart EBuy 4.44875e+006 1.08831 TInvDB EInvRd 2806.36 1.76446 EInvUpd 1159.53 1248.46 0.804933 TCustDB ECustRd 9132.98 1.3841 ECustUpd 1079 823.875 0.898573 TFS EFRd 250.057 0.728577 EFWrite 27.7841 250.057 0.455361 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.013028 168 168 TWebServer EAccess 0.013028 143.568 143.568 TImgDisk ERdImg 0.195377 0.195377 0.195377 TStoreApp EBrowse 0.0114343 85.9251 85.9251 EOrder 0.0015908 3.22342 3.22342 Total: 0.0130251 89.1486 89.1486 TCart EBuy 0.0015908 3.21633 3.21633 TInvDB EInvRd 0.222322 8.86643 8.86643 EInvUpd 0.00159087 0.034991 0.0520215 0.0870125 Total: 0.223913 8.90142 0.0520215 8.95344 TCustDB ECustRd 0 0 0 ECustUpd 0.0015908 0.0335932 0.0396125 0.0732056 Total: 0.0015908 0.0335932 0.0396125 0.0732056 TFS EFRd 0.325196 6.02458 6.02458 EFWrite 0.00638644 0.0394384 0.118315 0.157753 Total: 0.331583 6.06402 0.118315 6.18234 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 168 EUserBeh 15.114 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.195377 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0260559 0.0533527 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.171515 0 EOrder 0.00664746 0 Task Total: 0.178162 TCart 0 10 EBuy 0.0477241 0 Processor Total: 0.225886 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.444645 0.90109 EInvUpd 0.0174996 0.450545 4.50545 Task Total: 0.462144 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00954482 0.559347 2.79673 Task Total: 0.00954482 Processor Total: 0.471689 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.975589 15.526 EFWrite 0.0255458 5.17533 15.526 Task Total: 1.00113