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 = 0.757472, $dem_order = 27.0972, $nusers = 202, $order_rate = 0.242528, $req_browse_read = 8.14138, $userThink = 1312.15 Convergence test value: 0.00324071 Number of iterations: 14 Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 84 MVA Step(): 1459 MVA Wait(): 257831 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(202) 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 1312.15 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 27.0972 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 0.757472 EAccess EOrder 0.242528 TStoreApp EBrowse EInvRd 8.14138 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 0.0130338 TWebServer EAccess 0.0164941 TImgDisk ERdImg 0.234039 TStoreApp EBrowse 0.0271809 EOrder 0.0425316 TCart EBuy 0.00183236 TInvDB EInvRd 0.174077 EInvUpd 0.126758 TCustDB ECustRd 0.00172136 ECustUpd 0.00183237 TFS EFRd 0.332597 EFWrite 0.276194 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 933.833 TWebServer EAccess ERdImg 0.587722 EAccess EBrowse 2288.15 EAccess EOrder 2291.5 TStoreApp EBrowse EInvRd 299.734 EOrder EBuy 4365.81 TCart EBuy EInvRd 364.104 EBuy EInvUpd 364.103 TInvDB EInvRd EFRd 6.7643 EInvUpd EFRd 6.7643 0 EInvUpd EFWrite 0 3.80654 TCustDB ECustRd EFRd 3.53406 ECustUpd EFRd 3.53406 0 ECustUpd EFWrite 0 3.98523 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 69.1725 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 8168.16 TWebServer EAccess 5922.18 TImgDisk ERdImg 1 TStoreApp EBrowse 2827.69 EOrder 6042.22 TCart EBuy 1649.48 TInvDB EInvRd 45.7876 EInvUpd 25.2681 38.9192 TCustDB ECustRd 85.0501 ECustUpd 22.1409 27.4313 TFS EFRd 16.9783 EFWrite 5.65944 16.9783 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 2.05922e+008 3.08641 TWebServer EAccess 9.13439e+007 2.60446 TImgDisk ERdImg 1 1 TStoreApp EBrowse 9.72862e+006 1.21671 EOrder 9.46808e+007 2.59339 TCart EBuy 2.93193e+006 1.07761 TInvDB EInvRd 3559.95 1.69804 EInvUpd 1451.81 1801.69 0.789684 TCustDB ECustRd 9783.94 1.35258 ECustUpd 1127.21 1005.22 0.867757 TFS EFRd 204.394 0.709054 EFWrite 22.7105 204.394 0.443159 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0247302 202 202 TWebServer EAccess 0.0247302 146.457 146.457 TImgDisk ERdImg 0.370949 0.370949 0.370949 TStoreApp EBrowse 0.0187322 52.969 52.969 EOrder 0.0059977 36.2395 36.2395 Total: 0.0247299 89.2084 89.2084 TCart EBuy 0.00599889 9.89504 9.89504 TInvDB EInvRd 0.170504 7.80698 7.80698 EInvUpd 0.00599717 0.151537 0.233405 0.384942 Total: 0.176501 7.95851 0.233405 8.19192 TCustDB ECustRd 0 0 0 ECustUpd 0.00599889 0.132821 0.164558 0.297378 Total: 0.00599889 0.132821 0.164558 0.297378 TFS EFRd 0.29647 5.03356 5.03356 EFWrite 0.0259331 0.146767 0.440301 0.587068 Total: 0.322403 5.18033 0.440301 5.62063 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 202 EUserBeh 32.4496 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.370949 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0494604 0.103966 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.280984 0 EOrder 0.162521 0 Task Total: 0.443505 TCart 0 10 EBuy 0.179967 0.480573 Processor Total: 0.623471 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.341008 1.05085 EInvUpd 0.0659688 0.525427 5.25427 Task Total: 0.406977 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0359934 0.62836 3.1418 Task Total: 0.0359934 Processor Total: 0.44297 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.88941 13.9783 EFWrite 0.103733 4.65945 13.9783 Task Total: 0.993143