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 = 0.972129, $dem_order = 5.76595, $nusers = 279, $order_rate = 0.0278712, $req_browse_read = 1.44208, $userThink = 720.931 Convergence test value: 0.00638168 Number of iterations: 10 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 60 MVA Step(): 837 MVA Wait(): 81648 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(279) 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 720.931 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 5.76595 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 0.972129 EAccess EOrder 0.0278712 TStoreApp EBrowse EInvRd 1.44208 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 0.0228771 TWebServer EAccess 0.0197462 TImgDisk ERdImg 0.303827 TStoreApp EBrowse 0.142179 EOrder 0.0428622 TCart EBuy 0.00206281 TInvDB EInvRd 0.172729 EInvUpd 0.125617 TCustDB ECustRd 0.00192324 ECustUpd 0.0020628 TFS EFRd 0.332312 EFWrite 0.276247 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 1229.34 TWebServer EAccess ERdImg 145.385 EAccess EBrowse 0.282059 EAccess EOrder 1.73506 TStoreApp EBrowse EInvRd 0.75242 EOrder EBuy 0.705759 TCart EBuy EInvRd 0.852601 EBuy EInvUpd 0.817901 TInvDB EInvRd EFRd 0.271208 EInvUpd EFRd 0.271208 0 EInvUpd EFWrite 0 0.193055 TCustDB ECustRd EFRd 0.165584 ECustUpd EFRd 0.165584 0 ECustUpd EFWrite 0 0.52248 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 19.0378 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 4185 TWebServer EAccess 2234.73 TImgDisk ERdImg 1 TStoreApp EBrowse 34.8264 EOrder 88.4705 TCart EBuy 81.9869 TInvDB EInvRd 13.3007 EInvUpd 7.25166 17.6521 TCustDB ECustRd 26.6299 ECustUpd 7.17628 11.2179 TFS EFRd 5.73732 EFWrite 1.91244 5.73732 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 3.64966e+007 2.08383 TWebServer EAccess 5.47452e+006 1.09622 TImgDisk ERdImg 1 1 TStoreApp EBrowse 1892.49 1.56033 EOrder 21163.5 2.70389 TCart EBuy 6530.89 0.97159 TInvDB EInvRd 270.782 1.53064 EInvUpd 104.937 313.556 0.674772 TCustDB ECustRd 913.935 1.28878 ECustUpd 102.603 137.348 0.709186 TFS EFRd 16.4823 0.500726 EFWrite 1.83137 16.4823 0.312954 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0666667 279 279 TWebServer EAccess 0.0666667 148.982 148.982 TImgDisk ERdImg 1 1 1 TStoreApp EBrowse 0.0648086 2.25705 2.25705 EOrder 0.00185808 0.164385 0.164385 Total: 0.0666667 2.42144 2.42144 TCart EBuy 0.00185828 0.152354 0.152354 TInvDB EInvRd 0.099066 1.31764 1.31764 EInvUpd 0.00185864 0.0134782 0.0328089 0.0462872 Total: 0.100925 1.33112 0.0328089 1.36393 TCustDB ECustRd 0 0 0 ECustUpd 0.00185828 0.0133355 0.020846 0.0341815 Total: 0.00185828 0.0133355 0.020846 0.0341815 TFS EFRd 0.182549 1.04734 1.04734 EFWrite 0.00837768 0.0160218 0.0480654 0.0640872 Total: 0.190926 1.06336 0.0480654 1.11143 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 279 EUserBeh 48.0621 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 1 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.133333 0.307689 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.972129 0 EOrder 0.0107136 0 Task Total: 0.982842 TCart 0 10 EBuy 0.0557483 1.37913 Processor Total: 1.03859 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.198132 0.476675 EInvUpd 0.020445 0.238338 2.38338 Task Total: 0.218577 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0111497 0.268724 1.34362 Task Total: 0.0111497 Processor Total: 0.229727 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.547646 2.73538 EFWrite 0.0335107 0.911793 2.73538 Task Total: 0.581157