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 = 0.898159, $dem_order = 32.5306, $nusers = 235, $order_rate = 0.101841, $req_browse_read = 11.5532, $userThink = 127.17 Convergence test value: 0.00141076 Number of iterations: 10 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 60 MVA Step(): 665 MVA Wait(): 57888 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(235) 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 127.17 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 32.5306 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 0.898159 EAccess EOrder 0.101841 TStoreApp EBrowse EInvRd 11.5532 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 0.0779786 TWebServer EAccess 0.0366388 TImgDisk ERdImg 0.545362 TStoreApp EBrowse 0.0204624 EOrder 0.0442675 TCart EBuy 0.000982561 TInvDB EInvRd 0.179316 EInvUpd 0.131208 TCustDB ECustRd 0.000949657 ECustUpd 0.000982579 TFS EFRd 0.333637 EFWrite 0.275921 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 4117.43 TWebServer EAccess ERdImg 0.43387 EAccess EBrowse 2927.79 EAccess EOrder 2927.71 TStoreApp EBrowse EInvRd 362.304 EOrder EBuy 1.96539 TCart EBuy EInvRd 470.175 EBuy EInvUpd 470.175 TInvDB EInvRd EFRd 2.57272 EInvUpd EFRd 2.57272 0 EInvUpd EFWrite 0 1.41008 TCustDB ECustRd EFRd 1.31182 ECustUpd EFRd 1.31182 0 ECustUpd EFWrite 0 2.55315 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 50.9959 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 11601.8 TWebServer EAccess 7357.23 TImgDisk ERdImg 1 TStoreApp EBrowse 4668.63 EOrder 2088.48 TCart EBuy 2054.72 TInvDB EInvRd 40.5259 EInvUpd 22.3524 33.3724 TCustDB ECustRd 81.5344 ECustUpd 21.2004 25.1548 TFS EFRd 18.3218 EFWrite 6.10726 18.3218 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 4.16993e+008 3.09796 TWebServer EAccess 1.33774e+008 2.4714 TImgDisk ERdImg 1 1 TStoreApp EBrowse 2.52206e+007 1.15711 EOrder 1.31871e+007 3.02335 TCart EBuy 4.59532e+006 1.08846 TInvDB EInvRd 2877.56 1.7521 EInvUpd 1186.13 1301.51 0.801106 TCustDB ECustRd 9171.68 1.37965 ECustUpd 1079.85 840.53 0.893694 TFS EFRd 243.757 0.726142 EFWrite 27.0841 243.757 0.453839 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0202554 235 235 TWebServer EAccess 0.0202554 149.024 149.024 TImgDisk ERdImg 0.303826 0.303826 0.303826 TStoreApp EBrowse 0.0181923 84.933 84.933 EOrder 0.0020628 4.30811 4.30811 Total: 0.0202551 89.2412 89.2412 TCart EBuy 0.0020628 4.23847 4.23847 TInvDB EInvRd 0.216369 8.76855 8.76855 EInvUpd 0.00206281 0.0461087 0.0688408 0.11495 Total: 0.218432 8.81465 0.0688408 8.8835 TCustDB ECustRd 0 0 0 ECustUpd 0.0020628 0.0437322 0.0518894 0.0956215 Total: 0.0020628 0.0437322 0.0518894 0.0956215 TFS EFRd 0.322273 5.90461 5.90461 EFWrite 0.00834556 0.0509685 0.152906 0.203874 Total: 0.330618 5.95558 0.152906 6.10848 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 235 EUserBeh 2.57588 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.303826 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0405109 0.0842262 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.272884 0 EOrder 0.0671042 0 Task Total: 0.339988 TCart 0 10 EBuy 0.061884 0.0872508 Processor Total: 0.401872 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.432738 0.915809 EInvUpd 0.0226909 0.457905 4.57905 Task Total: 0.455429 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0123768 0.566805 2.83402 Task Total: 0.0123768 Processor Total: 0.467806 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.966818 15.3218 EFWrite 0.0333822 5.10726 15.3218 Task Total: 1.0002