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 = 0.910478, $dem_order = 63.9064, $nusers = 261, $order_rate = 0.0895221, $req_browse_read = 10.67, $userThink = 1443.78 Convergence test value: 0.00505248 Number of iterations: 9 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 54 MVA Step(): 648 MVA Wait(): 58190 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(261) 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 1443.78 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 63.9064 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 0.910478 EAccess EOrder 0.0895221 TStoreApp EBrowse EInvRd 10.67 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 0.0213616 TWebServer EAccess 0.0182445 TImgDisk ERdImg 0.267738 TStoreApp EBrowse 0.0221701 EOrder 0.0438799 TCart EBuy 0.000562707 TInvDB EInvRd 0.182082 EInvUpd 0.133568 TCustDB ECustRd 0.000551736 ECustUpd 0.000562708 TFS EFRd 0.334145 EFWrite 0.275736 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 3693.37 TWebServer EAccess ERdImg 0.483161 EAccess EBrowse 2714.11 EAccess EOrder 2714.04 TStoreApp EBrowse EInvRd 359.997 EOrder EBuy 1.2202 TCart EBuy EInvRd 467.831 EBuy EInvUpd 467.831 TInvDB EInvRd EFRd 2.44457 EInvUpd EFRd 2.44457 0 EInvUpd EFWrite 0 1.33879 TCustDB ECustRd EFRd 1.24699 ECustUpd EFRd 1.24699 0 ECustUpd EFWrite 0 2.51224 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 50.6311 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 11967.2 TWebServer EAccess 6830.02 TImgDisk ERdImg 1 TStoreApp EBrowse 4286.58 EOrder 2108.35 TCart EBuy 2044.9 TInvDB EInvRd 40.3758 EInvUpd 22.2692 33.2157 TCustDB ECustRd 81.4617 ECustUpd 21.1805 25.0957 TFS EFRd 18.3684 EFWrite 6.12281 18.3684 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 3.83235e+008 2.67595 TWebServer EAccess 1.15642e+008 2.47897 TImgDisk ERdImg 1 1 TStoreApp EBrowse 2.14984e+007 1.17 EOrder 1.31829e+007 2.96568 TCart EBuy 4.55104e+006 1.08835 TInvDB EInvRd 2860.72 1.75482 EInvUpd 1179.81 1288.99 0.80193 TCustDB ECustRd 9162.03 1.38065 ECustUpd 1079.56 836.61 0.894783 TFS EFRd 245.189 0.726702 EFWrite 27.2432 245.189 0.454189 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0218097 261.001 261.001 TWebServer EAccess 0.0218097 148.961 148.961 TImgDisk ERdImg 0.327147 0.327147 0.327147 TStoreApp EBrowse 0.0198574 85.1202 85.1202 EOrder 0.00195246 4.11647 4.11647 Total: 0.0218098 89.2366 89.2366 TCart EBuy 0.00195247 3.99259 3.99259 TInvDB EInvRd 0.21774 8.79141 8.79141 EInvUpd 0.00195249 0.0434803 0.0648532 0.108334 Total: 0.219692 8.83489 0.0648532 8.89974 TCustDB ECustRd 0 0 0 ECustUpd 0.00195247 0.0413543 0.0489984 0.0903527 Total: 0.00195247 0.0413543 0.0489984 0.0903527 TFS EFRd 0.322959 5.93225 5.93225 EFWrite 0.00788509 0.0482789 0.144837 0.193116 Total: 0.330844 5.98053 0.144837 6.12537 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 261 EUserBeh 31.4884 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.327147 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0436193 0.0909825 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.29786 0 EOrder 0.124775 0 Task Total: 0.422635 TCart 0 10 EBuy 0.058574 0.174806 Processor Total: 0.481209 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.435479 0.912338 EInvUpd 0.0214774 0.456169 4.56169 Task Total: 0.456957 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0117148 0.565111 2.82556 Task Total: 0.0117148 Processor Total: 0.468672 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.968877 15.3684 EFWrite 0.0315404 5.12281 15.3684 Task Total: 1.00042