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 = 0.863191, $dem_order = 21.4514, $nusers = 18, $order_rate = 0.136809, $req_browse_read = 7.09668, $userThink = 1429.37 Convergence test value: 0.00450456 Number of iterations: 6 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 36 MVA Step(): 305 MVA Wait(): 16818 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(18) 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 1429.37 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 21.4514 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 0.863191 EAccess EOrder 0.136809 TStoreApp EBrowse EInvRd 7.09668 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 0.0115768 TWebServer EAccess 0.0594196 TImgDisk ERdImg 0.124745 TStoreApp EBrowse 0.0358393 EOrder 0.0358633 TCart EBuy 0.00199581 TInvDB EInvRd 0.0602003 EInvUpd 0.0551412 TCustDB ECustRd 0.00197332 ECustUpd 0.0019958 TFS EFRd 0.117591 EFWrite 0.115633 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.19479 EAccess EBrowse 0 EAccess EOrder 0 TStoreApp EBrowse EInvRd 0.452066 EOrder EBuy 0 TCart EBuy EInvRd 0.547423 EBuy EInvUpd 0.547312 TInvDB EInvRd EFRd 0.15055 EInvUpd EFRd 0.15055 0 EInvUpd EFWrite 0 0.120779 TCustDB ECustRd EFRd 0.088114 ECustUpd EFRd 0.088114 0 ECustUpd EFWrite 0 0.39085 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 16.4259 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 1545.91 TWebServer EAccess 117.176 TImgDisk ERdImg 1 TStoreApp EBrowse 98.0118 EOrder 93.2023 TCart EBuy 72.1228 TInvDB EInvRd 11.277 EInvUpd 6.13413 16.087 TCustDB ECustRd 22.5746 ECustUpd 6.09171 9.97571 TFS EFRd 4.80552 EFWrite 1.60184 4.80552 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 2.43401e+006 1.01848 TWebServer EAccess 30143.1 2.19537 TImgDisk ERdImg 1 1 TStoreApp EBrowse 11956.1 1.24461 EOrder 18859.4 2.17107 TCart EBuy 4966.11 0.954709 TInvDB EInvRd 192.985 1.51751 EInvUpd 74.2949 259.478 0.675956 TCustDB ECustRd 654.456 1.28422 ECustUpd 73.1222 107.184 0.698424 TFS EFRd 12.2603 0.530909 EFWrite 1.36226 12.2603 0.331818 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0116422 17.9978 17.9978 TWebServer EAccess 0.0116422 1.36419 1.36419 TImgDisk ERdImg 0.174577 0.174577 0.174577 TStoreApp EBrowse 0.0100462 0.984646 0.984646 EOrder 0.00159225 0.148401 0.148401 Total: 0.0116384 1.13305 1.13305 TCart EBuy 0.00159222 0.114835 0.114835 TInvDB EInvRd 0.0760665 0.857805 0.857805 EInvUpd 0.00159224 0.009767 0.0256144 0.0353814 Total: 0.0776587 0.867572 0.0256144 0.893186 TCustDB ECustRd 0 0 0 ECustUpd 0.00159222 0.00969931 0.0158835 0.0255828 Total: 0.00159222 0.00969931 0.0158835 0.0255828 TFS EFRd 0.140166 0.67357 0.67357 EFWrite 0.00716715 0.0114806 0.0344419 0.0459225 Total: 0.147333 0.68505 0.0344419 0.719492 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 18 EUserBeh 16.641 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.174577 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0232844 0.0449014 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.150693 0 EOrder 0.0341558 0 Task Total: 0.184849 TCart 0 10 EBuy 0.0477665 0 Processor Total: 0.232615 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.152133 0.35609 EInvUpd 0.0175146 0.178045 1.78045 Task Total: 0.169648 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00955329 0.198064 0.990318 Task Total: 0.00955329 Processor Total: 0.179201 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.420497 1.80563 EFWrite 0.0286686 0.601877 1.80563 Task Total: 0.449166