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 = 0.817699, $dem_order = 68.5711, $nusers = 11, $order_rate = 0.182301, $req_browse_read = 11.2329, $userThink = 1655.61 Convergence test value: 0.0053062 Number of iterations: 8 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 412 MVA Wait(): 24046 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(11) 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 1655.61 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 68.5711 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 0.817699 EAccess EOrder 0.182301 TStoreApp EBrowse EInvRd 11.2329 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 0.000821458 TWebServer EAccess 0.0134097 TImgDisk ERdImg 0.195379 TStoreApp EBrowse 0.0199652 EOrder 0.041771 TCart EBuy 0.00159087 TInvDB EInvRd 0.175523 EInvUpd 0.127983 TCustDB ECustRd 0.00150644 ECustUpd 0.00159083 TFS EFRd 0.332894 EFWrite 0.276129 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0.305363 TWebServer EAccess ERdImg 0.0897392 EAccess EBrowse 0 EAccess EOrder 0.0355225 TStoreApp EBrowse EInvRd 0.265891 EOrder EBuy 0 TCart EBuy EInvRd 0.367557 EBuy EInvUpd 0.36832 TInvDB EInvRd EFRd 0.0826428 EInvUpd EFRd 0.0826428 0 EInvUpd EFWrite 0 0.071539 TCustDB ECustRd EFRd 0.0489811 ECustUpd EFRd 0.0489811 0 ECustUpd EFWrite 0 0.314654 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 14.845 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1806.33 TWebServer EAccess 149.882 TImgDisk ERdImg 1 TStoreApp EBrowse 130.797 EOrder 134.803 TCart EBuy 67.0841 TInvDB EInvRd 10.0598 EInvUpd 5.46303 15.0382 TCustDB ECustRd 20.1899 ECustUpd 5.44455 9.19698 TFS EFRd 4.2486 EFWrite 1.4162 4.2486 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 3.33445e+006 1.02195 TWebServer EAccess 51033.3 2.27173 TImgDisk ERdImg 1 1 TStoreApp EBrowse 20034.3 1.17105 EOrder 26941.2 1.48258 TCart EBuy 4216.17 0.936869 TInvDB EInvRd 153.613 1.51791 EInvUpd 59.0394 227.092 0.680781 TCustDB ECustRd 523.77 1.28491 ECustUpd 58.5275 90.671 0.695972 TFS EFRd 10.559 0.584969 EFWrite 1.17323 10.559 0.365606 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0060915 11.0033 11.0033 TWebServer EAccess 0.0060915 0.913003 0.913003 TImgDisk ERdImg 0.0913896 0.0913896 0.0913896 TStoreApp EBrowse 0.00498195 0.651626 0.651626 EOrder 0.0011107 0.149725 0.149725 Total: 0.00609264 0.801351 0.801351 TCart EBuy 0.0011107 0.0745103 0.0745103 TInvDB EInvRd 0.059292 0.596467 0.596467 EInvUpd 0.00111069 0.00606773 0.0167028 0.0227705 Total: 0.0604027 0.602535 0.0167028 0.619238 TCustDB ECustRd 0 0 0 ECustUpd 0.0011107 0.00604726 0.0102151 0.0162623 Total: 0.0011107 0.00604726 0.0102151 0.0162623 TFS EFRd 0.108959 0.462924 0.462924 EFWrite 0.00499854 0.00707892 0.0212368 0.0283157 Total: 0.113958 0.470003 0.0212368 0.491239 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 11 EUserBeh 10.0851 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.0913896 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.012183 0.0223798 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.0747292 0 EOrder 0.0761616 0 Task Total: 0.150891 TCart 0 10 EBuy 0.033321 0 Processor Total: 0.184212 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.118584 0.263787 EInvUpd 0.0122176 0.131894 1.31894 Task Total: 0.130802 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0066642 0.147073 0.735365 Task Total: 0.0066642 Processor Total: 0.137466 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.326878 1.24861 EFWrite 0.0199942 0.416204 1.24861 Task Total: 0.346872