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 = 0.84469, $dem_order = 69.4866, $nusers = 247, $order_rate = 0.15531, $req_browse_read = 12.6968, $userThink = 1017.72 Convergence test value: 0.00968519 Number of iterations: 12 Pragma: severity-level=warning Solver: Elapsed: 0:00:00.000 Submodels: 6 MVA Core(): 72 MVA Step(): 1114 MVA Wait(): 149866 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(247) 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 1017.72 TWebServer EAccess 2 TImgDisk ERdImg 1 TStoreApp EBrowse 15 EOrder 69.4866 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 0.84469 EAccess EOrder 0.15531 TStoreApp EBrowse EInvRd 12.6968 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 0.215481 TWebServer EAccess 1.16682 TImgDisk ERdImg 1 TStoreApp EBrowse 0.826017 EOrder 0.716067 TCart EBuy 0.177936 TInvDB EInvRd 0.945946 EInvUpd 0.424242 TCustDB ECustRd 0.0666667 ECustUpd 0.0909091 TFS EFRd 3.33333 EFWrite 2.5 Mean delay for a rendezvous: Task Name Source Entry Target Entry Phase 1 Phase 2 TUsers EUserBeh EAccess 4293.96 TWebServer EAccess ERdImg 0.380975 EAccess EBrowse 3210.76 EAccess EOrder 3210.71 TStoreApp EBrowse EInvRd 375.903 EOrder EBuy 35.0056 TCart EBuy EInvRd 482.713 EBuy EInvUpd 482.713 TInvDB EInvRd EFRd 3.48321 EInvUpd EFRd 3.48321 0 EInvUpd EFWrite 0 1.9199 TCustDB ECustRd EFRd 1.7743 ECustUpd EFRd 1.7743 0 ECustUpd EFWrite 0 2.84622 Mean delay for a send-no-reply request: Task Name Source Entry Target Entry Phase 1 Phase 2 TCart EBuy ECustUpd 53.8336 Service times: Task Name Entry Name Phase 1 Phase 2 TUsers EUserBeh 13378.8 TWebServer EAccess 8067.24 TImgDisk ERdImg 1 TStoreApp EBrowse 5315.75 EOrder 2211.67 TCart EBuy 2108.88 TInvDB EInvRd 41.611 EInvUpd 22.9538 34.5087 TCustDB ECustRd 82.0959 ECustUpd 21.354 25.5922 TFS EFRd 17.9997 EFWrite 5.9999 17.9997 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 5.08644e+008 2.84172 TWebServer EAccess 1.58383e+008 2.43365 TImgDisk ERdImg 1 1 TStoreApp EBrowse 3.23026e+007 1.14316 EOrder 1.43307e+007 2.92973 TCart EBuy 4.8417e+006 1.08866 TInvDB EInvRd 3003.89 1.73487 EInvUpd 1234.05 1394.96 0.796202 TCustDB ECustRd 9252.37 1.37281 ECustUpd 1083.57 870.006 0.886398 TFS EFRd 233.991 0.722217 EFWrite 25.999 233.991 0.451386 Throughputs and utilizations per phase: Task Name Entry Name Throughput Phase 1 Phase 2 Total TUsers EUserBeh 0.0184619 246.997 246.997 TWebServer EAccess 0.0184619 148.936 148.936 TImgDisk ERdImg 0.276941 0.276941 0.276941 TStoreApp EBrowse 0.0155953 82.9006 82.9006 EOrder 0.00286745 6.34186 6.34186 Total: 0.0184627 89.2425 89.2425 TCart EBuy 0.00286746 6.04713 6.04713 TInvDB EInvRd 0.206619 8.59764 8.59764 EInvUpd 0.0028675 0.0658201 0.0989538 0.164774 Total: 0.209487 8.66346 0.0989538 8.76241 TCustDB ECustRd 0 0 0 ECustUpd 0.00286746 0.0612317 0.0733848 0.134616 Total: 0.00286746 0.0612317 0.0733848 0.134616 TFS EFRd 0.317217 5.7098 5.7098 EFWrite 0.011752 0.070511 0.211533 0.282044 Total: 0.328969 5.78031 0.211533 5.99185 Utilization and waiting per phase for processor: PUsers Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TUsers 0 247 EUserBeh 18.7889 0 Utilization and waiting per phase for processor: PImgDisk Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TImgDisk 0 1 ERdImg 0.276941 0 Utilization and waiting per phase for processor: PWebServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TWebServer 0 150 EAccess 0.0369238 0.0764902 Utilization and waiting per phase for processor: PStore Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TStoreApp 0 90 EBrowse 0.233929 0 EOrder 0.199249 0 Task Total: 0.433179 TCart 0 10 EBuy 0.0860238 0.234516 Processor Total: 0.519202 Utilization and waiting per phase for processor: PDBs Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TInvDB 0 7 EInvRd 0.413239 0.94184 EInvUpd 0.0315425 0.47092 4.7092 Task Total: 0.444781 TCustDB 0 1 ECustRd 0 0 ECustUpd 0.0172048 0.580003 2.90001 Task Total: 0.0172048 Processor Total: 0.461986 Utilization and waiting per phase for processor: PFileServer Task Name Pri n Entry Name Utilization Phase 1 Phase 2 TFS 0 10 EFRd 0.95165 14.9997 EFWrite 0.0470081 4.9999 14.9997 Task Total: 0.998658