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author | William R. Otte <wotte@dre.vanderbilt.edu> | 2006-07-24 15:50:11 +0000 |
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committer | William R. Otte <wotte@dre.vanderbilt.edu> | 2006-07-24 15:50:11 +0000 |
commit | 6b846cf03c0bcbd8c276cb0af61a181e5f98eaae (patch) | |
tree | da50d054f9c761c3f6a5923f6979e93306c56d68 /TAO/examples/RTScheduling/Fixed_Priority_Scheduler/README | |
parent | 0e555b9150d38e3b3473ba325b56db2642e6352b (diff) | |
download | ATCD-6b846cf03c0bcbd8c276cb0af61a181e5f98eaae.tar.gz |
Repo restructuring
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-rw-r--r-- | TAO/examples/RTScheduling/Fixed_Priority_Scheduler/README | 155 |
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diff --git a/TAO/examples/RTScheduling/Fixed_Priority_Scheduler/README b/TAO/examples/RTScheduling/Fixed_Priority_Scheduler/README deleted file mode 100644 index 41ea051f14d..00000000000 --- a/TAO/examples/RTScheduling/Fixed_Priority_Scheduler/README +++ /dev/null @@ -1,155 +0,0 @@ -Fixed Priority Scheduler -======================== - -Table of contents ------------------ -1. Introduction -2. Conf file parameters -3. Running the example. - -1. Introduction ---------------- - -This scheduler uses the OS scheduler to schedule the Distributable -Threads (DTs) in the system. The DTs are scheduled according to their -importance. The scheduler maps the importance of the DT to native -thread priorities so the OS scheduler can schedule the DTs. - -In this experiment we show how dynamic scheduling is done using the -Dynamic Scheduling framework with the Fixed Priority Scheduler as the -pluggable scheduler. At any given instance the DT of highest priority -is running on a given host. - -The experiment consists of the following participants: -Job: A CORBA servant object that performs CPU intensive work. The -amount of work depends on a load factor that is conveyed to the object -per invocation as an argument. - -DT_Task: The distributable thread is a scheduling segment spanning one -or more hosts. - -test: The test consists of a collection of Jobs and DTs hosted in -a single process. The test reads a configuration file that can be used -to initialize DTs and Jobs. - -Starter: The starter initiates the start of DTs on each host that the -test is running on. This is to ensure that the experiment starts at -the same time on all hosts. - -2. Conf file parameters ------------------------ - -POA OPTIONS -========== -To specify POA options the format is: - --POACount <count> -POA <name> -PriorityModel <CLIENT|SERVER> <priority> -Lanes <count> (-Lane <priority> ,<static_threads> <dynamic_threads>)* -Bands <count> (-Band <low> <high>)* - -e.g. --POACount 2 -POA poa1 -PriorityModel CLIENT 10 -Bands 2 -Band 1 20 -Band 30 85 -Lanes 2 -Lane 10 1 0 -Lane 80 1 0 - -specifes a POA with: - -POA Count - Specifies the number of POAs that need to be activated. The following characteristics of each POA needs to be specified. - -Name - poa1 - -Priority model - client propogated, def. priority = 10 - -Bands - 2 Bands with Band values as follows - - Band 1 : low priority = 1, high priority = 20 - Band 2 : low priority = 30, high priority = 85 - -Lanes - 2 Lanes with Lane values as follows - - Lane 1 : priority = 10, 1 static thread, 0 dynamic threads - Lane 2 : priority = 80, 1 static thread, 0 dynamic threads - - -Distributable Thread Task Options -================================= - -The format to specify a DT Task is: - --DT_Count <count> -DT_Task Importance <imp> -Start_Time <time> -Iter <local_work> -Load <remote_work> -JobName <name> - -where, --DT_Count = Total number of DT_Tasks --DT_Task = Specifies a Distributable Thread --Importance = The priority of the DT --Start_Time = Time at which the DT enters the system --Iter = The number of secs of work to be done on the local host. For a -distributed DT it defines the number of secs of local work to be done -before and after a remote method call is made. --Load = The number of secs of work to be done on the remote host when -a two-way method call is made by a distributed DT --JobName <name> = Name of the Job object that this DT will make a -remote method call on to do some 'Load' number of secs of work on the -remote host - -e.g. --DT_Count 1 -DT_Task -Importance 5 -Start_Time 0 -Iter 3 -Load 5 -JobName job_1 - -specifes a DT Task in which, -Importance = 5 -Start Time = 0 -Iter = 3 -Load = 5 -JobName = job_1 - -Job Options -=========== -The format for specify a Job is: --Job_Count <count> -Job <name> <poa_name> - -where, poa_name is the POA that this object is activated in. - -Job Count - Specifies the number of jobs that are activated. - -e.g. --Job job_10 poa1 - -specifies a Job with, - -Name - job_10 -POA Name - poa1 - -Misc -===== - --GuidSeed <guid> - -This specifies the guid number with which the guid counter will get -initialized. This is to ensure that unique guids are used. This will -be removed when the ACE UUID generator is integrated with TAO. - --OutFile <filename> - -This specifies the data file in which the schedule of the DT"s running -on the host will be output. - --LogFile <filenmae> - -This speficies the log file - -3. Running the example ----------------------- - -a) The activated Jobs and Synch objects are registered with a Naming -service, so we need an NS running - -e.g. ./Naming_Service -o naming_ior - -b) Start one or more instances of ./test depending on the test -configuration that you have designed. - -e.g. ./test -ORBInitRef NameService=file://naming_ior -ORBSvcConf svc.conf.whatever -ORBDebugLevel 1 - -c) Execute the Starter that initiates the creation of DTs on all the -hosts that the experiment is running - -eg. ./Starter -ORBInitRef NameService=file://naming.ior - -c) Once all the instances exit, the test will generate schedule files -as specified by the user with the -OutFile option file - - |