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 = 0.861148, $dem_order = 10.7308, $nusers = 54, $order_rate = 0.138852, $req_browse_read = 15.5622, $userThink = 955.093 Convergence test value: 0.00675481 Number of iterations: 11 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 66 MVA Step(): 924 MVA Wait(): 143459 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(54) 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 955.093 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 10.7308 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 0.861148 EAccess EOrder 0.138852 TStoreApp EBrowse EInvRd 15.5622 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 0.0442299 TWebServer EAccess 0.0839369 TImgDisk ERdImg 0.251544 TStoreApp EBrowse 0.0465596 EOrder 0.0537733 TCart EBuy 0.00196806 TInvDB EInvRd 0.155282 EInvUpd 0.119614 TCustDB ECustRd 0.00190621 ECustUpd 0.00196813 TFS EFRd 0.291091 EFWrite 0.265596 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.28575 EAccess EBrowse 0 EAccess EOrder 0 TStoreApp EBrowse EInvRd 141.575 EOrder EBuy 0 TCart EBuy EInvRd 182.86 EBuy EInvUpd 182.86 TInvDB EInvRd EFRd 2.65378 EInvUpd EFRd 2.65378 0 EInvUpd EFWrite 0 1.45618 TCustDB ECustRd EFRd 1.374 ECustUpd EFRd 1.374 0 ECustUpd EFWrite 0 2.5934 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 51.2213 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 3557.41 TWebServer EAccess 2602.94 TImgDisk ERdImg 1 TStoreApp EBrowse 2850.08 EOrder 916.273 TCart EBuy 905.691 TInvDB EInvRd 40.6149 EInvUpd 22.4017 33.473 TCustDB ECustRd 81.6507 ECustUpd 21.2308 25.2198 TFS EFRd 18.2886 EFWrite 6.09621 18.2886 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 4.06623e+007 3.2131 TWebServer EAccess 2.12525e+007 3.13676 TImgDisk ERdImg 1 1 TStoreApp EBrowse 8.99625e+006 1.10751 EOrder 2.52493e+006 3.00746 TCart EBuy 864949 1.05446 TInvDB EInvRd 2887.32 1.75035 EInvUpd 1189.74 1309.53 0.80054 TCustDB ECustRd 9191.79 1.37873 ECustUpd 1081.42 844.981 0.89282 TFS EFRd 242.744 0.725746 EFWrite 26.9715 242.744 0.453591 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0151801 54.002 54.002 TWebServer EAccess 0.0151801 39.513 39.513 TImgDisk ERdImg 0.227648 0.227648 0.227648 TStoreApp EBrowse 0.0130693 37.2484 37.2484 EOrder 0.00210729 1.93086 1.93086 Total: 0.0151766 39.1793 39.1793 TCart EBuy 0.00210727 1.90853 1.90853 TInvDB EInvRd 0.209716 8.51759 8.51759 EInvUpd 0.00210733 0.0472078 0.0705387 0.117747 Total: 0.211824 8.5648 0.0705387 8.63534 TCustDB ECustRd 0 0 0 ECustUpd 0.00210727 0.0447389 0.0531449 0.0978838 Total: 0.00210727 0.0447389 0.0531449 0.0978838 TFS EFRd 0.321813 5.88553 5.88553 EFWrite 0.00865416 0.0527576 0.158273 0.21103 Total: 0.330467 5.93828 0.158273 6.09656 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 54 EUserBeh 14.4984 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.227648 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0303603 0.0613769 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.196039 0 EOrder 0.022613 0 Task Total: 0.218652 TCart 0 10 EBuy 0.063218 0 Processor Total: 0.28187 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.419432 0.918393 EInvUpd 0.0231806 0.459197 4.59197 Task Total: 0.442613 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0126436 0.56811 2.84055 Task Total: 0.0126436 Processor Total: 0.455257 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.965439 15.2887 EFWrite 0.0346166 5.09622 15.2887 Task Total: 1.00006