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 = 0.89651, $dem_order = 2.64367, $nusers = 198, $order_rate = 0.10349, $req_browse_read = 10.7882, $userThink = 274.442 Convergence test value: 0.00592719 Number of iterations: 8 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 48 MVA Step(): 565 MVA Wait(): 52118 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(198) 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 274.442 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 2.64367 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 0.89651 EAccess EOrder 0.10349 TStoreApp EBrowse EInvRd 10.7882 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 0.014687 TWebServer EAccess 0.011875 TImgDisk ERdImg 0.189753 TStoreApp EBrowse 0.0196077 EOrder 0.0406889 TCart EBuy 0.00285581 TInvDB EInvRd 0.16829 EInvUpd 0.121873 TCustDB ECustRd 0.00259524 ECustUpd 0.00285574 TFS EFRd 0.331321 EFWrite 0.276368 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 2051.82 TWebServer EAccess ERdImg 0.472272 EAccess EBrowse 2713.92 EAccess EOrder 2713.57 TStoreApp EBrowse EInvRd 365.233 EOrder EBuy 3.87848 TCart EBuy EInvRd 473.011 EBuy EInvUpd 473.011 TInvDB EInvRd EFRd 2.75683 EInvUpd EFRd 2.75683 0 EInvUpd EFWrite 0 1.51271 TCustDB ECustRd EFRd 1.40498 ECustUpd EFRd 1.40498 0 ECustUpd EFWrite 0 2.612 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 51.5351 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 9218.58 TWebServer EAccess 6892.25 TImgDisk ERdImg 1 TStoreApp EBrowse 4394.46 EOrder 2073.26 TCart EBuy 2066.81 TInvDB EInvRd 40.7427 EInvUpd 22.4726 33.599 TCustDB ECustRd 81.6411 ECustUpd 21.2297 25.2415 TFS EFRd 18.2553 EFWrite 6.0851 18.2553 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 2.86662e+008 3.3732 TWebServer EAccess 1.17492e+008 2.47336 TImgDisk ERdImg 1 1 TStoreApp EBrowse 2.25596e+007 1.16821 EOrder 1.32361e+007 3.07931 TCart EBuy 4.64989e+006 1.08854 TInvDB EInvRd 2902.15 1.74832 EInvUpd 1195.39 1319.76 0.79998 TCustDB ECustRd 9186.17 1.37822 ECustUpd 1080.36 846.281 0.89214 TFS EFRd 241.724 0.725341 EFWrite 26.8582 241.724 0.453338 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0214785 198.002 198.002 TWebServer EAccess 0.0214785 148.035 148.035 TImgDisk ERdImg 0.322153 0.322153 0.322153 TStoreApp EBrowse 0.0192542 84.6121 84.6121 EOrder 0.00222265 4.60814 4.60814 Total: 0.0214769 89.2202 89.2202 TCart EBuy 0.00222264 4.59378 4.59378 TInvDB EInvRd 0.214395 8.73504 8.73504 EInvUpd 0.0022227 0.0499498 0.0746806 0.12463 Total: 0.216618 8.78499 0.0746806 8.85967 TCustDB ECustRd 0 0 0 ECustUpd 0.00222264 0.0471861 0.0561028 0.103289 Total: 0.00222264 0.0471861 0.0561028 0.103289 TFS EFRd 0.321276 5.86499 5.86499 EFWrite 0.00901573 0.0548616 0.164585 0.219446 Total: 0.330292 5.91985 0.164585 6.08443 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 198 EUserBeh 5.89461 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.322153 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.042957 0.0895283 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.288814 0 EOrder 0.00587595 0 Task Total: 0.29469 TCart 0 10 EBuy 0.0666793 0.0509149 Processor Total: 0.361369 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.42879 0.920895 EInvUpd 0.0244497 0.460447 4.60447 Task Total: 0.45324 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0133359 0.569453 2.84726 Task Total: 0.0133359 Processor Total: 0.466576 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.963828 15.2553 EFWrite 0.0360629 5.0851 15.2553 Task Total: 0.999891