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 = 0.907902, $dem_order = 18.3191, $nusers = 231, $order_rate = 0.0920977, $req_browse_read = 16.5309, $userThink = 1038.25 Convergence test value: 0.00461482 Number of iterations: 11 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 66 MVA Step(): 968 MVA Wait(): 127029 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(231) 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 1038.25 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 18.3191 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 0.907902 EAccess EOrder 0.0920977 TStoreApp EBrowse EInvRd 16.5309 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 0.194889 TWebServer EAccess 0.0855751 TImgDisk ERdImg 0.530027 TStoreApp EBrowse 0.0436961 EOrder 0.0506065 TCart EBuy 0.00456883 TInvDB EInvRd 0.136244 EInvUpd 0.107021 TCustDB ECustRd 0.00428631 ECustUpd 0.00456915 TFS EFRd 0.269164 EFWrite 0.249796 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 4543.13 TWebServer EAccess ERdImg 0.282635 EAccess EBrowse 4013.44 EAccess EOrder 4013.22 TStoreApp EBrowse EInvRd 350.463 EOrder EBuy 0 TCart EBuy EInvRd 458.768 EBuy EInvUpd 458.767 TInvDB EInvRd EFRd 1.73813 EInvUpd EFRd 1.73813 0 EInvUpd EFWrite 0 0.947784 TCustDB ECustRd EFRd 0.890162 ECustUpd EFRd 0.890162 0 ECustUpd EFWrite 0 2.2879 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 48.7438 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 15669.7 TWebServer EAccess 10088.1 TImgDisk ERdImg 1 TStoreApp EBrowse 6462.18 EOrder 2023.67 TCart EBuy 2005.57 TInvDB EInvRd 39.5595 EInvUpd 21.8167 32.3655 TCustDB ECustRd 81.0871 ECustUpd 21.0771 24.7733 TFS EFRd 18.6316 EFWrite 6.21054 18.6316 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 7.33335e+008 2.98663 TWebServer EAccess 2.53098e+008 2.48696 TImgDisk ERdImg 1 1 TStoreApp EBrowse 4.63504e+007 1.10993 EOrder 1.24952e+007 3.05113 TCart EBuy 4.37719e+006 1.08823 TInvDB EInvRd 2772.01 1.7713 EInvUpd 1146.82 1222.71 0.807139 TCustDB ECustRd 9116.08 1.38645 ECustUpd 1078.93 815.675 0.901224 TFS EFRd 253.348 0.72982 EFWrite 28.1497 253.348 0.456137 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.014742 231.003 231.003 TWebServer EAccess 0.014742 148.719 148.719 TImgDisk ERdImg 0.221131 0.221131 0.221131 TStoreApp EBrowse 0.0133844 86.4922 86.4922 EOrder 0.00135771 2.74757 2.74757 Total: 0.0147421 89.2397 89.2397 TCart EBuy 0.00135771 2.72299 2.72299 TInvDB EInvRd 0.225335 8.91413 8.91413 EInvUpd 0.00135773 0.0296212 0.0439435 0.0735647 Total: 0.226693 8.94375 0.0439435 8.9877 TCustDB ECustRd 0 0 0 ECustUpd 0.00135771 0.0286166 0.033635 0.0622516 Total: 0.00135771 0.0286166 0.033635 0.0622516 TFS EFRd 0.326628 6.0856 6.0856 EFWrite 0.00542942 0.0337196 0.101159 0.134878 Total: 0.332057 6.11932 0.101159 6.22048 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 231 EUserBeh 15.3059 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.221131 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.029484 0.0606103 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.200765 0 EOrder 0.0248721 0 Task Total: 0.225638 TCart 0 10 EBuy 0.0407314 0 Processor Total: 0.266369 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.45067 0.893928 EInvUpd 0.014935 0.446964 4.46964 Task Total: 0.465605 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00814627 0.555279 2.77639 Task Total: 0.00814627 Processor Total: 0.473751 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.979883 15.6316 EFWrite 0.0217177 5.21054 15.6316 Task Total: 1.0016