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 = 0.900548, $dem_order = 31.4461, $nusers = 132, $order_rate = 0.099452, $req_browse_read = 16.6377, $userThink = 576.818 Convergence test value: 0.00430808 Number of iterations: 12 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 72 MVA Step(): 1055 MVA Wait(): 195726 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(132) 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 576.818 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 31.4461 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 0.900548 EAccess EOrder 0.099452 TStoreApp EBrowse EInvRd 16.6377 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 0.210489 TWebServer EAccess 0.177307 TImgDisk ERdImg 0.340036 TStoreApp EBrowse 0.0930341 EOrder 0.0996676 TCart EBuy 0.000560977 TInvDB EInvRd 0.025903 EInvUpd 0.0250086 TCustDB ECustRd 0.000559632 ECustUpd 0.000560977 TFS EFRd 0.0492392 EFWrite 0.0489622 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 0 TWebServer EAccess ERdImg 0.279893 EAccess EBrowse 2363.37 EAccess EOrder 2363.25 TStoreApp EBrowse EInvRd 349.288 EOrder EBuy 0 TCart EBuy EInvRd 456.686 EBuy EInvUpd 456.686 TInvDB EInvRd EFRd 1.85924 EInvUpd EFRd 1.85924 0 EInvUpd EFWrite 0 1.01456 TCustDB ECustRd EFRd 0.951457 ECustUpd EFRd 0.951457 0 ECustUpd EFWrite 0 2.32632 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 49.0528 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 9004.77 TWebServer EAccess 8427.88 TImgDisk ERdImg 1 TStoreApp EBrowse 6486.59 EOrder 2028.77 TCart EBuy 1997.75 TInvDB EInvRd 39.698 EInvUpd 21.8935 32.5095 TCustDB ECustRd 81.149 ECustUpd 21.0943 24.8283 TFS EFRd 18.5858 EFWrite 6.19526 18.5858 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 3.3715e+008 4.15794 TWebServer EAccess 1.85016e+008 2.60478 TImgDisk ERdImg 1 1 TStoreApp EBrowse 4.66692e+007 1.10917 EOrder 1.24497e+007 3.02478 TCart EBuy 4.34227e+006 1.08802 TInvDB EInvRd 2786.73 1.7683 EInvUpd 1152.25 1233.74 0.806164 TCustDB ECustRd 9123.27 1.38543 ECustUpd 1078.94 819.202 0.90007 TFS EFRd 251.917 0.729281 EFWrite 27.9908 251.917 0.455801 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0146588 131.999 131.999 TWebServer EAccess 0.0146588 123.543 123.543 TImgDisk ERdImg 0.219885 0.219885 0.219885 TStoreApp EBrowse 0.0132012 85.6305 85.6305 EOrder 0.00145787 2.95768 2.95768 Total: 0.014659 88.5882 88.5882 TCart EBuy 0.00145787 2.91246 2.91246 TInvDB EInvRd 0.224018 8.89306 8.89306 EInvUpd 0.00145789 0.0319183 0.0473952 0.0793134 Total: 0.225475 8.92497 0.0473952 8.97237 TCustDB ECustRd 0 0 0 ECustUpd 0.00145787 0.0307528 0.0361965 0.0669493 Total: 0.00145787 0.0307528 0.0361965 0.0669493 TFS EFRd 0.326012 6.05919 6.05919 EFWrite 0.00583991 0.0361798 0.108539 0.144719 Total: 0.331852 6.09537 0.108539 6.20391 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 132 EUserBeh 8.45545 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.219885 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0293176 0.0601603 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.198017 0 EOrder 0.0458443 0 Task Total: 0.243862 TCart 0 10 EBuy 0.0437362 0.00851903 Processor Total: 0.287598 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.448035 0.896991 EInvUpd 0.0160367 0.448496 4.48496 Task Total: 0.464072 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.00874724 0.557028 2.78514 Task Total: 0.00874724 Processor Total: 0.472819 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.978036 15.5858 EFWrite 0.0233596 5.19526 15.5858 Task Total: 1.0014