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 = 0.760023, $dem_order = 41.8383, $nusers = 21, $order_rate = 0.239977, $req_browse_read = 8.23195, $userThink = 2400.39 Convergence test value: 0.00863867 Number of iterations: 8 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 426 MVA Wait(): 25006 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(21) 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 2400.39 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 41.8383 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 0.760023 EAccess EOrder 0.239977 TStoreApp EBrowse EInvRd 8.23195 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 0.001233 TWebServer EAccess 0.0157587 TImgDisk ERdImg 0.221132 TStoreApp EBrowse 0.0274658 EOrder 0.0428937 TCart EBuy 0.00135773 TInvDB EInvRd 0.176949 EInvUpd 0.129194 TCustDB ECustRd 0.00129573 ECustUpd 0.00135772 TFS EFRd 0.33318 EFWrite 0.276057 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0.712422 TWebServer EAccess ERdImg 0.133818 EAccess EBrowse 0.0301823 EAccess EOrder 0.185817 TStoreApp EBrowse EInvRd 0.502855 EOrder EBuy 0.013143 TCart EBuy EInvRd 0.577626 EBuy EInvUpd 0.577723 TInvDB EInvRd EFRd 0.153365 EInvUpd EFRd 0.153365 0 EInvUpd EFWrite 0 0.132004 TCustDB ECustRd EFRd 0.0898343 ECustUpd EFRd 0.0898343 0 ECustUpd EFWrite 0 0.351736 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 15.3201 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 2526.46 TWebServer EAccess 124.752 TImgDisk ERdImg 1 TStoreApp EBrowse 104.095 EOrder 110.227 TCart EBuy 68.9318 TInvDB EInvRd 10.3449 EInvUpd 5.61981 15.3934 TCustDB ECustRd 20.6398 ECustUpd 5.56628 9.36516 TFS EFRd 4.32013 EFWrite 1.44004 4.32013 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 6.4296e+006 1.0073 TWebServer EAccess 33682.4 2.16424 TImgDisk ERdImg 1 1 TStoreApp EBrowse 13140.1 1.21266 EOrder 21383.1 1.75994 TCart EBuy 4460.37 0.938712 TInvDB EInvRd 162.001 1.51378 EInvUpd 62.2146 237.801 0.679454 TCustDB ECustRd 546.798 1.28356 ECustUpd 61.0258 94.1567 0.696048 TFS EFRd 10.7428 0.575602 EFWrite 1.19364 10.7428 0.359751 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.00831401 21.005 21.005 TWebServer EAccess 0.00831401 1.03719 1.03719 TImgDisk ERdImg 0.124749 0.124749 0.124749 TStoreApp EBrowse 0.00632082 0.657965 0.657965 EOrder 0.00199579 0.21999 0.21999 Total: 0.00831661 0.877955 0.877955 TCart EBuy 0.00199583 0.137576 0.137576 TInvDB EInvRd 0.0580216 0.60023 0.60023 EInvUpd 0.00199581 0.0112161 0.0307223 0.0419384 Total: 0.0600175 0.611446 0.0307223 0.642168 TCustDB ECustRd 0 0 0 ECustUpd 0.00199583 0.0111094 0.0186913 0.0298006 Total: 0.00199583 0.0111094 0.0186913 0.0298006 TFS EFRd 0.108457 0.468549 0.468549 EFWrite 0.00898275 0.0129356 0.0388067 0.0517422 Total: 0.11744 0.481484 0.0388067 0.520291 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 21 EUserBeh 19.9569 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.124749 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.016628 0.0321675 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.0948123 0 EOrder 0.0835006 0 Task Total: 0.178313 TCart 0 10 EBuy 0.059875 0 Processor Total: 0.238188 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.116043 0.292658 EInvUpd 0.021954 0.146329 1.46329 Task Total: 0.137997 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.011975 0.156322 0.781609 Task Total: 0.011975 Processor Total: 0.149972 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.325371 1.32014 EFWrite 0.035931 0.440047 1.32014 Task Total: 0.361302