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 = 0.88256, $dem_order = 12.7935, $nusers = 268, $order_rate = 0.11744, $req_browse_read = 15.5233, $userThink = 2990.57 Convergence test value: 0.000514526 Number of iterations: 10 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 60 MVA Step(): 747 MVA Wait(): 70353 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(268) 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 2990.57 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 12.7935 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 0.88256 EAccess EOrder 0.11744 TStoreApp EBrowse EInvRd 15.5233 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 0.0418397 TWebServer EAccess 0.0541099 TImgDisk ERdImg 0.768115 TStoreApp EBrowse 0.0197425 EOrder 0.0133665 TCart EBuy 0.00738042 TInvDB EInvRd 0.146788 EInvUpd 0.104034 TCustDB ECustRd 0.00583673 ECustUpd 0.007382 TFS EFRd 0.325226 EFWrite 0.275623 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 4647.6 TWebServer EAccess ERdImg 0.304122 EAccess EBrowse 3796.76 EAccess EOrder 3796.84 TStoreApp EBrowse EInvRd 358.744 EOrder EBuy 0.657892 TCart EBuy EInvRd 466.903 EBuy EInvUpd 466.903 TInvDB EInvRd EFRd 2.30425 EInvUpd EFRd 2.30425 0 EInvUpd EFWrite 0 1.26084 TCustDB ECustRd EFRd 1.17625 ECustUpd EFRd 1.17625 0 ECustUpd EFWrite 0 2.4676 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 50.2417 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 17176.5 TWebServer EAccess 9538.37 TImgDisk ERdImg 1 TStoreApp EBrowse 6207.84 EOrder 2053.67 TCart EBuy 2040.43 TInvDB EInvRd 40.212 EInvUpd 22.1784 33.045 TCustDB ECustRd 81.3845 ECustUpd 21.1597 25.0327 TFS EFRd 18.4199 EFWrite 6.13996 18.4199 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 7.42596e+008 2.51699 TWebServer EAccess 2.24723e+008 2.47002 TImgDisk ERdImg 1 1 TStoreApp EBrowse 4.305e+007 1.1171 EOrder 1.29151e+007 3.06223 TCart EBuy 4.53153e+006 1.08844 TInvDB EInvRd 2842.54 1.7579 EInvUpd 1173 1275.47 0.802873 TCustDB ECustRd 9152.09 1.38177 ECustUpd 1079.33 832.443 0.895974 TFS EFRd 246.773 0.727317 EFWrite 27.4192 246.773 0.454573 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0156027 268 268 TWebServer EAccess 0.0156027 148.824 148.824 TImgDisk ERdImg 0.234039 0.234039 0.234039 TStoreApp EBrowse 0.0137702 85.4834 85.4834 EOrder 0.00183236 3.76307 3.76307 Total: 0.0156026 89.2464 89.2464 TCart EBuy 0.00183237 3.73881 3.73881 TInvDB EInvRd 0.219254 8.81665 8.81665 EInvUpd 0.00183236 0.0406388 0.0605503 0.101189 Total: 0.221086 8.85729 0.0605503 8.91784 TCustDB ECustRd 0 0 0 ECustUpd 0.00183237 0.0387722 0.0458692 0.0846414 Total: 0.00183237 0.0387722 0.0458692 0.0846414 TFS EFRd 0.323703 5.96258 5.96258 EFWrite 0.00738533 0.0453456 0.136037 0.181383 Total: 0.331089 6.00792 0.136037 6.14396 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 268 EUserBeh 46.6609 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.234039 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0312054 0.0642624 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.206554 0 EOrder 0.0234424 0 Task Total: 0.229996 TCart 0 10 EBuy 0.054971 0.00318729 Processor Total: 0.284967 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.438508 0.908602 EInvUpd 0.0201559 0.454301 4.54301 Task Total: 0.458664 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0109942 0.563525 2.81763 Task Total: 0.0109942 Processor Total: 0.469658 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.97111 15.4199 EFWrite 0.0295413 5.13996 15.4199 Task Total: 1.00065