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 = 0.870727, $dem_order = 34.6893, $nusers = 62, $order_rate = 0.129273, $req_browse_read = 3.78848, $userThink = 1608.11 Convergence test value: 0.00860155 Number of iterations: 14 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 84 MVA Step(): 1070 MVA Wait(): 101294 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(62) 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 1608.11 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 34.6893 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 0.870727 EAccess EOrder 0.129273 TStoreApp EBrowse EInvRd 3.78848 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 0.00617768 TWebServer EAccess 0.0169076 TImgDisk ERdImg 0.219885 TStoreApp EBrowse 0.0567991 EOrder 0.0422917 TCart EBuy 0.00145789 TInvDB EInvRd 0.176331 EInvUpd 0.128669 TCustDB ECustRd 0.00138666 ECustUpd 0.00145787 TFS EFRd 0.333057 EFWrite 0.27609 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0.522704 TWebServer EAccess ERdImg 1.05252 EAccess EBrowse 0.279352 EAccess EOrder 0.485598 TStoreApp EBrowse EInvRd 3.53818 EOrder EBuy 0.27346 TCart EBuy EInvRd 3.61025 EBuy EInvUpd 3.59231 TInvDB EInvRd EFRd 1.41582 EInvUpd EFRd 1.41582 0 EInvUpd EFWrite 0 0.926578 TCustDB ECustRd EFRd 0.789549 ECustUpd EFRd 0.789549 0 ECustUpd EFWrite 0 1.24361 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 29.5023 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1755.24 TWebServer EAccess 146.518 TImgDisk ERdImg 1 TStoreApp EBrowse 107.251 EOrder 153.402 TCart EBuy 119.239 TInvDB EInvRd 20.9013 EInvUpd 11.4568 23.4745 TCustDB ECustRd 40.7399 ECustUpd 10.8695 15.4242 TFS EFRd 8.64322 EFWrite 2.88107 8.64322 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 3.14733e+006 1.02157 TWebServer EAccess 44626.7 2.0788 TImgDisk ERdImg 1 1 TStoreApp EBrowse 16440.7 1.42929 EOrder 52589.5 2.23479 TCart EBuy 14761.3 1.03822 TInvDB EInvRd 694.783 1.59039 EInvUpd 274.826 578.077 0.698987 TCustDB ECustRd 2181.27 1.31422 ECustUpd 248.227 276.816 0.759437 TFS EFRd 40.8307 0.546557 EFWrite 4.53675 40.8307 0.341598 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0353246 62.0033 62.0033 TWebServer EAccess 0.0353246 5.17569 5.17569 TImgDisk ERdImg 0.530044 0.530044 0.530044 TStoreApp EBrowse 0.0307683 3.29991 3.29991 EOrder 0.00456804 0.700747 0.700747 Total: 0.0353363 4.00066 4.00066 TCart EBuy 0.00456822 0.54471 0.54471 TInvDB EInvRd 0.130294 2.72332 2.72332 EInvUpd 0.00456883 0.0523441 0.107251 0.159595 Total: 0.134863 2.77566 0.107251 2.88291 TCustDB ECustRd 0 0 0 ECustUpd 0.00456822 0.0496544 0.070461 0.120115 Total: 0.00456822 0.0496544 0.070461 0.120115 TFS EFRd 0.246725 2.1325 2.1325 EFWrite 0.020711 0.05967 0.17901 0.23868 Total: 0.267436 2.19217 0.17901 2.37118 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 62 EUserBeh 56.8058 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.530044 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0706492 0.149313 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.461524 0 EOrder 0.158462 0 Task Total: 0.619986 TCart 0 10 EBuy 0.137047 0.624729 Processor Total: 0.757033 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.260588 0.790554 EInvUpd 0.0502571 0.395277 3.95277 Task Total: 0.310845 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0274093 0.434515 2.17257 Task Total: 0.0274093 Processor Total: 0.338255 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.740174 5.64187 EFWrite 0.0828441 1.88062 5.64187 Task Total: 0.823018