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 = 0.777992, $dem_order = 70.1271, $nusers = 14, $order_rate = 0.222008, $req_browse_read = 7.72014, $userThink = 268.757 Convergence test value: 0.00510594 Number of iterations: 11 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 66 MVA Step(): 932 MVA Wait(): 110081 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(14) 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 268.757 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 70.1271 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 0.777992 EAccess EOrder 0.222008 TStoreApp EBrowse EInvRd 7.72014 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 0.00129724 TWebServer EAccess 0.0227651 TImgDisk ERdImg 0.327148 TStoreApp EBrowse 0.0286583 EOrder 0.0418736 TCart EBuy 0.00195249 TInvDB EInvRd 0.173371 EInvUpd 0.126161 TCustDB ECustRd 0.00182696 ECustUpd 0.00195247 TFS EFRd 0.332449 EFWrite 0.276223 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.429228 EAccess EBrowse 0.430515 EAccess EOrder 0 TStoreApp EBrowse EInvRd 11.7071 EOrder EBuy 0.228599 TCart EBuy EInvRd 13.0707 EBuy EInvUpd 13.0784 TInvDB EInvRd EFRd 3.45746 EInvUpd EFRd 3.45746 0 EInvUpd EFWrite 0 2.06354 TCustDB ECustRd EFRd 1.92069 ECustUpd EFRd 1.92069 0 ECustUpd EFWrite 0 2.46272 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 45.7229 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 629.009 TWebServer EAccess 360.485 TImgDisk ERdImg 1 TStoreApp EBrowse 356.44 EOrder 267.488 TCart EBuy 198.606 TInvDB EInvRd 32.5541 EInvUpd 17.9208 30.807 TCustDB ECustRd 62.6041 ECustUpd 16.4573 21.3599 TFS EFRd 12.9813 EFWrite 4.32712 12.9813 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 877319 2.2174 TWebServer EAccess 352235 2.71056 TImgDisk ERdImg 1 1 TStoreApp EBrowse 156801 1.23418 EOrder 152964 2.13786 TCart EBuy 41766.7 1.05888 TInvDB EInvRd 1761.96 1.66259 EInvUpd 711.515 1064.41 0.747948 TCustDB ECustRd 5257.86 1.34154 ECustUpd 604.835 575.502 0.825329 TFS EFRd 108.615 0.644543 EFWrite 12.0684 108.615 0.40284 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0222566 13.9996 13.9996 TWebServer EAccess 0.0222566 8.02317 8.02317 TImgDisk ERdImg 0.333722 0.333722 0.333722 TStoreApp EBrowse 0.0173089 6.16958 6.16958 EOrder 0.00493926 1.32119 1.32119 Total: 0.0222482 7.49077 7.49077 TCart EBuy 0.00493889 0.980894 0.980894 TInvDB EInvRd 0.148515 4.83478 4.83478 EInvUpd 0.00493974 0.0885242 0.152179 0.240703 Total: 0.153455 4.9233 0.152179 5.07548 TCustDB ECustRd 0 0 0 ECustUpd 0.00493889 0.0812807 0.105495 0.186775 Total: 0.00493889 0.0812807 0.105495 0.186775 TFS EFRd 0.287895 3.73726 3.73726 EFWrite 0.0227207 0.098315 0.294945 0.39326 Total: 0.310615 3.83558 0.294945 4.13052 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 14 EUserBeh 5.98161 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.333722 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0445132 0.0860035 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.259633 0 EOrder 0.346376 0 Task Total: 0.60601 TCart 0 10 EBuy 0.148167 0.707099 Processor Total: 0.754177 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.297031 0.966164 EInvUpd 0.0543372 0.483082 4.83082 Task Total: 0.351368 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0296334 0.556152 2.78076 Task Total: 0.0296334 Processor Total: 0.381001 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.863684 9.98075 EFWrite 0.0908827 3.32692 9.98075 Task Total: 0.954567