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 = 0.874543, $dem_order = 35.3192, $nusers = 81, $order_rate = 0.125457, $req_browse_read = 9.01874, $userThink = 159.936 Convergence test value: 0.00585146 Number of iterations: 10 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 60 MVA Step(): 709 MVA Wait(): 66036 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(81) 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 159.936 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 35.3192 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 0.874543 EAccess EOrder 0.125457 TStoreApp EBrowse EInvRd 9.01874 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 0.029011 TWebServer EAccess 0.0362666 TImgDisk ERdImg 0.22066 TStoreApp EBrowse 0.028318 EOrder 0.0353845 TCart EBuy 0.000674608 TInvDB EInvRd 0.181296 EInvUpd 0.132893 TCustDB ECustRd 0.000658906 ECustUpd 0.000674611 TFS EFRd 0.334001 EFWrite 0.275793 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.566967 EAccess EBrowse 0 EAccess EOrder 0 TStoreApp EBrowse EInvRd 320.708 EOrder EBuy 16.9024 TCart EBuy EInvRd 410.191 EBuy EInvUpd 410.191 TInvDB EInvRd EFRd 3.72902 EInvUpd EFRd 3.72902 0 EInvUpd EFWrite 0 2.05873 TCustDB ECustRd EFRd 1.90417 ECustUpd EFRd 1.90417 0 ECustUpd EFWrite 0 2.92913 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 54.6759 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 3293.17 TWebServer EAccess 3133.42 TImgDisk ERdImg 1 TStoreApp EBrowse 3285.01 EOrder 1871.24 TCart EBuy 1819.88 TInvDB EInvRd 41.9082 EInvUpd 23.1185 34.8225 TCustDB ECustRd 82.276 ECustUpd 21.4026 25.7197 TFS EFRd 17.9149 EFWrite 5.97162 17.9149 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 5.14771e+007 4.74664 TWebServer EAccess 3.08121e+007 3.13824 TImgDisk ERdImg 1 1 TStoreApp EBrowse 1.2932e+007 1.19838 EOrder 1.04641e+007 2.98843 TCart EBuy 3.58845e+006 1.08349 TInvDB EInvRd 3039.82 1.73081 EInvUpd 1247.81 1421.59 0.795136 TCustDB ECustRd 9280.88 1.37102 ECustUpd 1085.37 878.82 0.884564 TFS EFRd 231.453 0.721167 EFWrite 25.717 231.453 0.450729 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.024596 80.9987 80.9987 TWebServer EAccess 0.024596 77.0695 77.0695 TImgDisk ERdImg 0.368923 0.368923 0.368923 TStoreApp EBrowse 0.0215093 70.6582 70.6582 EOrder 0.0030856 5.7739 5.7739 Total: 0.0245949 76.4321 76.4321 TCart EBuy 0.00308559 5.61539 5.61539 TInvDB EInvRd 0.203256 8.51811 8.51811 EInvUpd 0.00308579 0.0713388 0.107455 0.178794 Total: 0.206342 8.58945 0.107455 8.69691 TCustDB ECustRd 0 0 0 ECustUpd 0.00308559 0.0660397 0.0793605 0.1454 Total: 0.00308559 0.0660397 0.0793605 0.1454 TFS EFRd 0.315793 5.65739 5.65739 EFWrite 0.0127147 0.0759275 0.227782 0.30371 Total: 0.328508 5.73332 0.227782 5.9611 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 81 EUserBeh 3.93379 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.368923 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.049192 0.102064 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.322639 0 EOrder 0.108981 0 Task Total: 0.431621 TCart 0 10 EBuy 0.0925676 0.247035 Processor Total: 0.524188 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.406512 0.949329 EInvUpd 0.0339437 0.474665 4.74665 Task Total: 0.440456 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0185135 0.58365 2.91825 Task Total: 0.0185135 Processor Total: 0.45897 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.947379 14.9149 EFWrite 0.0508588 4.97162 14.9149 Task Total: 0.998238