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 = 0.82312, $dem_order = 67.4586, $nusers = 238, $order_rate = 0.17688, $req_browse_read = 20.0536, $userThink = 2218.5 Convergence test value: 0.00572593 Number of iterations: 9 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 54 MVA Step(): 657 MVA Wait(): 61926 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(238) 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 2218.5 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 67.4586 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 0.82312 EAccess EOrder 0.17688 TStoreApp EBrowse EInvRd 20.0536 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 0.0157631 TWebServer EAccess 0.0131318 TImgDisk ERdImg 0.187301 TStoreApp EBrowse 0.0116706 EOrder 0.0428715 TCart EBuy 0.000865226 TInvDB EInvRd 0.180076 EInvUpd 0.131856 TCustDB ECustRd 0.000839587 ECustUpd 0.000865228 TFS EFRd 0.333779 EFWrite 0.275873 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 4887.73 TWebServer EAccess ERdImg 0.232063 EAccess EBrowse 4695.07 EAccess EOrder 4694.96 TStoreApp EBrowse EInvRd 365.395 EOrder EBuy 3.84453 TCart EBuy EInvRd 473.204 EBuy EInvUpd 473.204 TInvDB EInvRd EFRd 2.75998 EInvUpd EFRd 2.75998 0 EInvUpd EFWrite 0 1.51448 TCustDB ECustRd EFRd 1.40655 ECustUpd EFRd 1.40655 0 ECustUpd EFWrite 0 2.613 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 51.5452 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 18916 TWebServer EAccess 11809.7 TImgDisk ERdImg 1 TStoreApp EBrowse 8159.28 EOrder 2137.5 TCart EBuy 2067.59 TInvDB EInvRd 40.7465 EInvUpd 22.4746 33.6029 TCustDB ECustRd 81.6429 ECustUpd 21.2302 25.2429 TFS EFRd 18.2541 EFWrite 6.08472 18.2541 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 1.00236e+009 2.80134 TWebServer EAccess 3.41888e+008 2.45135 TImgDisk ERdImg 1 1 TStoreApp EBrowse 7.26172e+007 1.09078 EOrder 1.35134e+007 2.95768 TCart EBuy 4.65349e+006 1.08855 TInvDB EInvRd 2902.57 1.74825 EInvUpd 1195.55 1320.08 0.79996 TCustDB ECustRd 9186.38 1.37819 ECustUpd 1080.36 846.378 0.89211 TFS EFRd 241.689 0.725328 EFWrite 26.8544 241.689 0.45333 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.012582 238.001 238.001 TWebServer EAccess 0.012582 148.59 148.59 TImgDisk ERdImg 0.188726 0.188726 0.188726 TStoreApp EBrowse 0.0103563 84.5 84.5 EOrder 0.00222546 4.75691 4.75691 Total: 0.0125818 89.2569 89.2569 TCart EBuy 0.00222546 4.60133 4.60133 TInvDB EInvRd 0.214359 8.73438 8.73438 EInvUpd 0.00222547 0.0500166 0.0747822 0.124799 Total: 0.216585 8.7844 0.0747822 8.85918 TCustDB ECustRd 0 0 0 ECustUpd 0.00222546 0.0472469 0.0561771 0.103424 Total: 0.00222546 0.0472469 0.0561771 0.103424 TFS EFRd 0.321259 5.86431 5.86431 EFWrite 0.00902748 0.0549297 0.164789 0.219719 Total: 0.330287 5.91924 0.164789 6.08403 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 238 EUserBeh 27.9131 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.188726 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.025164 0.0515565 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.155345 0 EOrder 0.150126 0 Task Total: 0.305471 TCart 0 10 EBuy 0.0667637 0.0600167 Processor Total: 0.372235 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.428719 0.920985 EInvUpd 0.0244801 0.460493 4.60493 Task Total: 0.453199 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0133527 0.569501 2.8475 Task Total: 0.0133527 Processor Total: 0.466552 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.963778 15.2542 EFWrite 0.0361099 5.08472 15.2542 Task Total: 0.999888