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 = 0.829771, $dem_order = 27.7649, $nusers = 67, $order_rate = 0.170229, $req_browse_read = 1.03412, $userThink = 1147.27 Convergence test value: 0.00789175 Number of iterations: 12 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 72 MVA Step(): 1080 MVA Wait(): 174754 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(67) 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 1147.27 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 27.7649 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 0.829771 EAccess EOrder 0.170229 TStoreApp EBrowse EInvRd 1.03412 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 0.00535903 TWebServer EAccess 0.0125621 TImgDisk ERdImg 0.196002 TStoreApp EBrowse 0.17382 EOrder 0.0387801 TCart EBuy 0.00321927 TInvDB EInvRd 0.166345 EInvUpd 0.12024 TCustDB ECustRd 0.00289193 ECustUpd 0.00321916 TFS EFRd 0.330861 EFWrite 0.276394 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0.271717 TWebServer EAccess ERdImg 3.02744 EAccess EBrowse 0.0750972 EAccess EOrder 0.555927 TStoreApp EBrowse EInvRd 4.33751 EOrder EBuy 0.258836 TCart EBuy EInvRd 3.93139 EBuy EInvUpd 3.92102 TInvDB EInvRd EFRd 1.32116 EInvUpd EFRd 1.32116 0 EInvUpd EFWrite 0 0.991523 TCustDB ECustRd EFRd 0.704206 ECustUpd EFRd 0.704206 0 ECustUpd EFWrite 0 0.953713 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 24.5093 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1262.79 TWebServer EAccess 115.182 TImgDisk ERdImg 1 TStoreApp EBrowse 35.9553 EOrder 132.264 TCart EBuy 104.042 TInvDB EInvRd 15.8471 EInvUpd 8.65503 20.876 TCustDB ECustRd 29.7906 ECustUpd 8.01143 12.4723 TFS EFRd 5.99225 EFWrite 1.99742 5.99225 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 1.62626e+006 1.01983 TWebServer EAccess 18188.5 1.37097 TImgDisk ERdImg 1 1 TStoreApp EBrowse 2126.71 1.64506 EOrder 38850.3 2.2208 TCart EBuy 10497.8 0.969786 TInvDB EInvRd 381.806 1.52035 EInvUpd 147.728 446.072 0.680898 TCustDB ECustRd 1140.42 1.28501 ECustUpd 127.155 173.526 0.716621 TFS EFRd 17.9515 0.499943 EFWrite 1.99461 17.9515 0.312465 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0530599 67.0036 67.0036 TWebServer EAccess 0.0530599 6.11156 6.11156 TImgDisk ERdImg 0.796089 0.796089 0.796089 TStoreApp EBrowse 0.0440381 1.58341 1.58341 EOrder 0.00903447 1.19494 1.19494 Total: 0.0530726 2.77834 2.77834 TCart EBuy 0.00903528 0.940053 0.940053 TInvDB EInvRd 0.0726614 1.15147 1.15147 EInvUpd 0.00903802 0.0782244 0.188678 0.266902 Total: 0.0816994 1.2297 0.188678 1.41838 TCustDB ECustRd 0 0 0 ECustUpd 0.00903528 0.0723855 0.112691 0.185076 Total: 0.00903528 0.0723855 0.112691 0.185076 TFS EFRd 0.149562 0.896216 0.896216 EFWrite 0.0407939 0.0814824 0.244447 0.325929 Total: 0.190356 0.977698 0.244447 1.22215 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 67 EUserBeh 60.874 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.796089 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.10612 0.233685 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.660572 0.0736507 EOrder 0.250841 0.136327 Task Total: 0.911413 TCart 0 10 EBuy 0.271058 2.10219 Processor Total: 1.18247 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.145323 0.68037 EInvUpd 0.0994182 0.340185 3.40185 Task Total: 0.244741 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0542117 0.313743 1.56872 Task Total: 0.0542117 Processor Total: 0.298953 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.448687 2.99191 EFWrite 0.163175 0.997302 2.99191 Task Total: 0.611863