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 = 0.844797, $dem_order = 63.2331, $nusers = 27, $order_rate = 0.155203, $req_browse_read = 10.3257, $userThink = 242.083 Convergence test value: 0.00730158 Number of iterations: 8 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 585 MVA Wait(): 69642 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(27) 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 242.083 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 63.2331 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 0.844797 EAccess EOrder 0.155203 TStoreApp EBrowse EInvRd 10.3257 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 0.0185618 TWebServer EAccess 0.0641346 TImgDisk ERdImg 0.240679 TStoreApp EBrowse 0.040961 EOrder 0.0556175 TCart EBuy 0.00428941 TInvDB EInvRd 0.159848 EInvUpd 0.114672 TCustDB ECustRd 0.00372246 ECustUpd 0.00428902 TFS EFRd 0.329022 EFWrite 0.276369 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.39537 EAccess EBrowse 0.201409 EAccess EOrder 0 TStoreApp EBrowse EInvRd 70.95 EOrder EBuy 0.0830326 TCart EBuy EInvRd 88.9722 EBuy EInvUpd 88.9708 TInvDB EInvRd EFRd 3.88556 EInvUpd EFRd 3.88556 0 EInvUpd EFWrite 0 2.15246 TCustDB ECustRd EFRd 2.09736 ECustUpd EFRd 2.09736 0 ECustUpd EFWrite 0 3.05696 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 55.1507 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1355.55 TWebServer EAccess 1114.02 TImgDisk ERdImg 1 TStoreApp EBrowse 1181.64 EOrder 597.439 TCart EBuy 535.58 TInvDB EInvRd 42.0645 EInvUpd 23.2049 35.0299 TCustDB ECustRd 82.7542 ECustUpd 21.5254 25.9427 TFS EFRd 17.8411 EFWrite 5.94703 17.8411 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 6.82056e+006 3.71181 TWebServer EAccess 3.74912e+006 3.02094 TImgDisk ERdImg 1 1 TStoreApp EBrowse 1.61164e+006 1.15425 EOrder 939770 2.6329 TCart EBuy 295766 1.0311 TInvDB EInvRd 3057.55 1.728 EInvUpd 1254.39 1439.03 0.794214 TCustDB ECustRd 9372.89 1.36865 ECustUpd 1093.93 895.008 0.882709 TFS EFRd 229.26 0.720255 EFWrite 25.4734 229.26 0.45016 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0199193 27.0017 27.0017 TWebServer EAccess 0.0199193 22.1905 22.1905 TImgDisk ERdImg 0.298634 0.298634 0.298634 TStoreApp EBrowse 0.016819 19.8739 19.8739 EOrder 0.00308992 1.84604 1.84604 Total: 0.0199089 21.72 21.72 TCart EBuy 0.00308978 1.65483 1.65483 TInvDB EInvRd 0.182954 7.69586 7.69586 EInvUpd 0.00309002 0.0717038 0.108243 0.179947 Total: 0.186044 7.76756 0.108243 7.87581 TCustDB ECustRd 0 0 0 ECustUpd 0.00308978 0.066509 0.0801572 0.146666 Total: 0.00308978 0.066509 0.0801572 0.146666 TFS EFRd 0.314731 5.61513 5.61513 EFWrite 0.0134274 0.0798532 0.23956 0.319413 Total: 0.328158 5.69499 0.23956 5.93455 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 27 EUserBeh 4.82213 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.298634 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0398386 0.0796372 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.252285 0 EOrder 0.195385 0 Task Total: 0.447671 TCart 0 10 EBuy 0.0926935 0.28479 Processor Total: 0.540364 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.365908 0.956198 EInvUpd 0.0339902 0.478099 4.78099 Task Total: 0.399898 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0185387 0.586912 2.93456 Task Total: 0.0185387 Processor Total: 0.418437 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.944192 14.8412 EFWrite 0.0537097 4.94705 14.8412 Task Total: 0.997901