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 = 0.855862, $dem_order = 71.3696, $nusers = 218, $order_rate = 0.144138, $req_browse_read = 3.01571, $userThink = 842.12 Convergence test value: 0.00697859 Number of iterations: 30 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 180 MVA Step(): 3277 MVA Wait(): 595363 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(218) 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 842.12 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 71.3696 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 0.855862 EAccess EOrder 0.144138 TStoreApp EBrowse EInvRd 3.01571 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 0.00877466 TWebServer EAccess 0.011974 TImgDisk ERdImg 0.17245 TStoreApp EBrowse 0.073852 EOrder 0.0430279 TCart EBuy 0.000683119 TInvDB EInvRd 0.181276 EInvUpd 0.132879 TCustDB ECustRd 0.000667023 ECustUpd 0.000683118 TFS EFRd 0.334 EFWrite 0.275792 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 545.034 TWebServer EAccess ERdImg 3.2373 EAccess EBrowse 1060.55 EAccess EOrder 1062.38 TStoreApp EBrowse EInvRd 244.078 EOrder EBuy 5357.93 TCart EBuy EInvRd 286.282 EBuy EInvUpd 286.282 TInvDB EInvRd EFRd 8.16635 EInvUpd EFRd 8.16635 0 EInvUpd EFWrite 0 4.63802 TCustDB ECustRd EFRd 4.37044 ECustUpd EFRd 4.37044 0 ECustUpd EFWrite 0 4.53785 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 79.744 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 4256.98 TWebServer EAccess 2869.79 TImgDisk ERdImg 1 TStoreApp EBrowse 895.145 EOrder 6778.87 TCart EBuy 1348.05 TInvDB EInvRd 47.6879 EInvUpd 26.3206 40.9653 TCustDB ECustRd 86.8847 ECustUpd 22.6222 28.3982 TFS EFRd 16.6006 EFWrite 5.53353 16.6006 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 6.60059e+007 3.64233 TWebServer EAccess 3.59375e+007 4.36361 TImgDisk ERdImg 1 1 TStoreApp EBrowse 1.24929e+006 1.55911 EOrder 1.21566e+008 2.64544 TCart EBuy 1.93783e+006 1.06636 TInvDB EInvRd 3845.87 1.69114 EInvUpd 1566.29 2012.83 0.790546 TCustDB ECustRd 10160.3 1.34592 ECustUpd 1163.96 1082.75 0.863096 TFS EFRd 193.977 0.703887 EFWrite 21.553 193.977 0.43993 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0512104 218.002 218.002 TWebServer EAccess 0.0512104 146.963 146.963 TImgDisk ERdImg 0.76811 0.76811 0.76811 TStoreApp EBrowse 0.0438264 39.231 39.231 EOrder 0.00738091 50.0342 50.0342 Total: 0.0512073 89.2652 89.2652 TCart EBuy 0.00738203 9.95137 9.95137 TInvDB EInvRd 0.154318 7.3591 7.3591 EInvUpd 0.00738042 0.194257 0.302341 0.496599 Total: 0.161698 7.55336 0.302341 7.8557 TCustDB ECustRd 0 0 0 ECustUpd 0.00738203 0.166998 0.209637 0.376635 Total: 0.00738203 0.166998 0.209637 0.376635 TFS EFRd 0.28647 4.75557 4.75557 EFWrite 0.0328484 0.181768 0.545304 0.727072 Total: 0.319318 4.93734 0.545304 5.48264 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 218 EUserBeh 43.1253 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.76811 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.102421 0.228031 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.657396 0.279352 EOrder 0.526773 1.32915 Task Total: 1.18417 TCart 0 10 EBuy 0.221461 3.5686 Processor Total: 1.40563 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.308636 1.10728 EInvUpd 0.0811846 0.55364 5.5364 Task Total: 0.389821 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0442922 0.651055 3.25528 Task Total: 0.0442922 Processor Total: 0.434113 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.859409 13.6006 EFWrite 0.131394 4.53354 13.6006 Task Total: 0.990803