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 = 0.930708, $dem_order = 71.3962, $nusers = 179, $order_rate = 0.0692919, $req_browse_read = 19.7281, $userThink = 1456.73 Convergence test value: 0.00372294 Number of iterations: 8 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 576 MVA Wait(): 52028 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(179) 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 1456.73 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 71.3962 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 0.930708 EAccess EOrder 0.0692919 TStoreApp EBrowse EInvRd 19.7281 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 0.0441004 TWebServer EAccess 0.040621 TImgDisk ERdImg 0.227654 TStoreApp EBrowse 0.0196272 EOrder 0.0460953 TCart EBuy 0.00210733 TInvDB EInvRd 0.172351 EInvUpd 0.125281 TCustDB ECustRd 0.0019618 ECustUpd 0.00210733 TFS EFRd 0.332217 EFWrite 0.276265 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 1243.82 TWebServer EAccess ERdImg 0.229474 EAccess EBrowse 4473.59 EAccess EOrder 4473.74 TStoreApp EBrowse EInvRd 341.671 EOrder EBuy 0 TCart EBuy EInvRd 449.828 EBuy EInvUpd 449.828 TInvDB EInvRd EFRd 1.1302 EInvUpd EFRd 1.1302 0 EInvUpd EFWrite 0 0.614006 TCustDB ECustRd EFRd 0.582008 ECustUpd EFRd 0.582008 0 ECustUpd EFWrite 0 2.09518 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 47.2734 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 14336.9 TWebServer EAccess 11636.3 TImgDisk ERdImg 1 TStoreApp EBrowse 7522.09 EOrder 2037.45 TCart EBuy 1967.36 TInvDB EInvRd 38.8724 EInvUpd 21.4358 31.6523 TCustDB ECustRd 80.7924 ECustUpd 20.9947 24.5007 TFS EFRd 18.8661 EFWrite 6.28869 18.8661 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 7.13127e+008 3.46939 TWebServer EAccess 3.40092e+008 2.51171 TImgDisk ERdImg 1 1 TStoreApp EBrowse 6.17953e+007 1.09214 EOrder 1.22328e+007 2.94679 TCart EBuy 4.2111e+006 1.08799 TInvDB EInvRd 2701.16 1.78758 EInvUpd 1120.92 1169.24 0.812586 TCustDB ECustRd 9084.59 1.39176 ECustUpd 1079.53 798.471 0.907321 TFS EFRd 260.732 0.732541 EFWrite 28.9703 260.732 0.457838 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0124853 179.002 179.002 TWebServer EAccess 0.0124853 145.283 145.283 TImgDisk ERdImg 0.187301 0.187301 0.187301 TStoreApp EBrowse 0.0116215 87.418 87.418 EOrder 0.000865229 1.76286 1.76286 Total: 0.0124867 89.1808 89.1808 TCart EBuy 0.00086523 1.70222 1.70222 TInvDB EInvRd 0.231861 9.01301 9.01301 EInvUpd 0.000865226 0.0185468 0.0273864 0.0459333 Total: 0.232726 9.03156 0.0273864 9.05894 TCustDB ECustRd 0 0 0 ECustUpd 0.00086523 0.0181652 0.0211987 0.0393639 Total: 0.00086523 0.0181652 0.0211987 0.0393639 TFS EFRd 0.329628 6.21879 6.21879 EFWrite 0.00343128 0.0215782 0.0647347 0.086313 Total: 0.333059 6.24037 0.0647347 6.3051 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 179 EUserBeh 18.1878 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.187301 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0249707 0.0510927 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.174323 0 EOrder 0.061774 0 Task Total: 0.236097 TCart 0 10 EBuy 0.0259569 0.00384623 Processor Total: 0.262053 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.463722 0.879119 EInvUpd 0.00951748 0.439559 4.39559 Task Total: 0.47324 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00519138 0.546585 2.73293 Task Total: 0.00519138 Processor Total: 0.478431 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.988884 15.8661 EFWrite 0.0137251 5.28869 15.8661 Task Total: 1.00261