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 -a -w ecomm2011.xlqn Input: ecomm2011.xlqn Comment: ... Variables: $browse_rate = 0.975254, $dem_order = 70.0009, $nusers = 19, $order_rate = 0.0247461, $req_browse_read = 1.06923, $userThink = 787.921 Convergence test value: 0.00284606 Number of iterations: 8 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 405 MVA Wait(): 23318 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(19) 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 787.921 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 70.0009 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 0.975254 EAccess EOrder 0.0247461 TStoreApp EBrowse EInvRd 1.06923 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 0.00144496 TWebServer EAccess 0.0175855 TImgDisk ERdImg 0.27694 TStoreApp EBrowse 0.179303 EOrder 0.0399458 TCart EBuy 0.0028675 TInvDB EInvRd 0.168224 EInvUpd 0.121818 TCustDB ECustRd 0.00260489 ECustUpd 0.00286744 TFS EFRd 0.331306 EFWrite 0.276369 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0.0689765 TWebServer EAccess ERdImg 0.458473 EAccess EBrowse 0 EAccess EOrder 0.119627 TStoreApp EBrowse EInvRd 0.104553 EOrder EBuy 0.0062629 TCart EBuy EInvRd 0.207034 EBuy EInvUpd 0.207023 TInvDB EInvRd EFRd 0.0275802 EInvUpd EFRd 0.0275802 0 EInvUpd EFWrite 0 0.0330408 TCustDB ECustRd EFRd 0.0165206 ECustUpd EFRd 0.0165206 0 ECustUpd EFWrite 0 0.225588 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 12.6484 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 838.29 TWebServer EAccess 50.2245 TImgDisk ERdImg 1 TStoreApp EBrowse 23.6474 EOrder 128.632 TCart EBuy 60.5177 TInvDB EInvRd 8.3646 EInvUpd 4.52984 13.5004 TCustDB ECustRd 16.8573 ECustUpd 4.52402 8.04822 TFS EFRd 3.4478 EFWrite 1.14927 3.4478 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 708597 1.00835 TWebServer EAccess 3452.65 1.36874 TImgDisk ERdImg 1 1 TStoreApp EBrowse 757.33 1.35432 EOrder 23667.5 1.43038 TCart EBuy 3329.93 0.909224 TInvDB EInvRd 108.114 1.54523 EInvUpd 41.7445 185.201 0.698104 TCustDB ECustRd 368.977 1.29845 ECustUpd 41.6094 69.7056 0.704252 TFS EFRd 9.20052 0.773978 EFWrite 1.02228 9.20052 0.483736 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0226672 19.0017 19.0017 TWebServer EAccess 0.0226672 1.13845 1.13845 TImgDisk ERdImg 0.340039 0.340039 0.340039 TStoreApp EBrowse 0.0221083 0.522803 0.522803 EOrder 0.000560977 0.0721599 0.0721599 Total: 0.0226693 0.594963 0.594963 TCart EBuy 0.000560979 0.0339492 0.0339492 TInvDB EInvRd 0.025322 0.211808 0.211808 EInvUpd 0.000560977 0.00254114 0.00757339 0.0101145 Total: 0.025883 0.21435 0.00757339 0.221923 TCustDB ECustRd 0 0 0 ECustUpd 0.000560979 0.00253788 0.00451489 0.00705277 Total: 0.000560979 0.00253788 0.00451489 0.00705277 TFS EFRd 0.0467006 0.161014 0.161014 EFWrite 0.00252439 0.0029012 0.00870359 0.0116048 Total: 0.049225 0.163915 0.00870359 0.172619 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 19 EUserBeh 17.86 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.340039 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0453344 0.0895911 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.331625 0 EOrder 0.0392689 0 Task Total: 0.370894 TCart 0 10 EBuy 0.0168294 0.0651839 Processor Total: 0.387723 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.050644 0.108917 EInvUpd 0.00617075 0.0544584 0.544584 Task Total: 0.0568148 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00336588 0.0597026 0.298513 Task Total: 0.00336588 Processor Total: 0.0601806 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.140102 0.4478 EFWrite 0.0100976 0.149267 0.4478 Task Total: 0.150199