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 = 0.775775, $dem_order = 24.3819, $nusers = 220, $order_rate = 0.224225, $req_browse_read = 19.7051, $userThink = 972.112 Convergence test value: 0.00910499 Number of iterations: 8 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 574 MVA Wait(): 53120 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(220) 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 972.112 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 24.3819 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 0.775775 EAccess EOrder 0.224225 TStoreApp EBrowse EInvRd 19.7051 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 0.0120371 TWebServer EAccess 0.0123167 TImgDisk ERdImg 0.181808 TStoreApp EBrowse 0.0110767 EOrder 0.0415192 TCart EBuy 0.00234846 TInvDB EInvRd 0.171095 EInvUpd 0.124237 TCustDB ECustRd 0.00216928 ECustUpd 0.00234842 TFS EFRd 0.331957 EFWrite 0.276301 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 4559.54 TWebServer EAccess ERdImg 0.240137 EAccess EBrowse 4564.4 EAccess EOrder 4564.83 TStoreApp EBrowse EInvRd 377.453 EOrder EBuy 39.1622 TCart EBuy EInvRd 484.503 EBuy EInvUpd 484.503 TInvDB EInvRd EFRd 3.51694 EInvUpd EFRd 3.51694 0 EInvUpd EFWrite 0 1.9389 TCustDB ECustRd EFRd 1.79147 ECustUpd EFRd 1.79147 0 ECustUpd EFWrite 0 2.85716 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 53.9483 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 17023.5 TWebServer EAccess 11492.1 TImgDisk ERdImg 1 TStoreApp EBrowse 8273.26 EOrder 2179.15 TCart EBuy 2115.95 TInvDB EInvRd 41.6519 EInvUpd 22.9764 34.5515 TCustDB ECustRd 82.1183 ECustUpd 21.3601 25.6089 TFS EFRd 17.9881 EFWrite 5.99603 17.9881 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 8.89911e+008 3.07079 TWebServer EAccess 3.21569e+008 2.43487 TImgDisk ERdImg 1 1 TStoreApp EBrowse 7.47751e+007 1.09245 EOrder 1.42696e+007 3.00496 TCart EBuy 4.87502e+006 1.08885 TInvDB EInvRd 3008.79 1.7343 EInvUpd 1235.92 1398.58 0.79605 TCustDB ECustRd 9255.75 1.37256 ECustUpd 1083.76 871.145 0.886143 TFS EFRd 233.643 0.722074 EFWrite 25.9603 233.643 0.451296 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0129231 219.996 219.996 TWebServer EAccess 0.0129231 148.514 148.514 TImgDisk ERdImg 0.193869 0.193869 0.193869 TStoreApp EBrowse 0.0100266 82.9523 82.9523 EOrder 0.00289802 6.31521 6.31521 Total: 0.0129246 89.2675 89.2675 TCart EBuy 0.00289804 6.13211 6.13211 TInvDB EInvRd 0.206266 8.59135 8.59135 EInvUpd 0.00289801 0.0665859 0.100131 0.166717 Total: 0.209164 8.65794 0.100131 8.75807 TCustDB ECustRd 0 0 0 ECustUpd 0.00289804 0.0619024 0.0742155 0.136118 Total: 0.00289804 0.0619024 0.0742155 0.136118 TFS EFRd 0.317024 5.70265 5.70265 EFWrite 0.0118827 0.0712491 0.213747 0.284997 Total: 0.328906 5.7739 0.213747 5.98765 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 220 EUserBeh 12.5627 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.193869 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0258463 0.0530277 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.150398 0 EOrder 0.0706592 0 Task Total: 0.221057 TCart 0 10 EBuy 0.0869413 0.00671649 Processor Total: 0.307999 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.412531 0.942847 EInvUpd 0.0318781 0.471423 4.71423 Task Total: 0.44441 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0173883 0.580498 2.90249 Task Total: 0.0173883 Processor Total: 0.461798 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.951071 14.9881 EFWrite 0.0475309 4.99603 14.9881 Task Total: 0.998601