ns2 project in tamil nadu

ns2 project in tamil nadu

 ns2 project in tamil nadu the PDES window is obtained from the PDES basic period

Tpdes, which corresponds to the Least Common Multiple

(LCM) of all the periods Ti specified for the periodic

transactions, as seen in Figure 5. This approach was also ns2 project in tamil nadu

used in [14] and [3]. The first PDES period in the execution

must be considered as PDES window ns2 project in tamil nadu if the transient

behaviour caused by pipelining [3] is being analyzed. On

the other hand, to analyze the permanent behaviour, several

PDES basic periods, starting with the second, must be considered

in the PDES window. The number of PDES basic periods in the PDES window increase with the variability of

the response times in the transactions and the mean activation period of the aperiodic transactions Parameters represent all the known information about

the PDES before execution. So, while they give only a

static view of the system, they are necessary to determine

the influence of the design components ns2 project in tamil nadu on the behaviour of

the system. Four kinds of parameters are considered in the

methodology: load parameters, parameters of the structural

model, parameters of the behavioural model, ns2 project in tamil nadu and parameters

of connection between models. Load parameters define the demands of service on the

system from the environment, and reflect ns2 project in tamil nadu the load characteristics

of transactions in the PDES behavioural model.

The structural model defines the current design of the

PDES and considers components on four ns2 project in tamil nadu levels or layers:

the whole PDES, processors, tasks (scheduling units) and

blocks. execution of activities. The behavioural model, on the other

hand, considers components on three levels: the PDES as a

whole, transactions and activities. Figure 6 shows the levels

considered in each model and the relationships between


The parameters of the structural and behavioural models

represent mapping relationships between their components

in the levels of the corresponding model. Finally, the ns2 project in tamil nadu parameters

of connection between the models establish the

mapping of activities in blocks, providing the basis with

which to relate both models. Metrics are the criteria to explain the behaviour observed

in the system. They can be simple measurements obtained

from the event trace, relationships between the measurements

and the parameters, resource utilization ns2 project in tamil nadu or special indexes.

Metrics provide information which feed the models

corresponding to both the behavioural and resource views.

The metrics used in this methodology can be classified

according to the level of analysis in which they are applied.

So, three different levels can be distinguished: PDES level

metrics, transaction level metrics and ns2 project in tamil nadu  activity level metrics.

For a specific level of analysis and a specific view, the

metrics can be calculated using all three analysis windows,

that is the PDES window (Wpdes), the transaction window

(Wtra) and the activity window (Wact). Three special indexes correspond to important metrics in

the resource view. The Index of blocking (Ib) helps to identify

the cause of blocking time in an activity. This index ns2 project in tamil nadu

compares the activity response time with the transaction period,

in order to establish if the blocking time is caused by

execution overlapping of transaction ns2 project in tamil nadu instances. Therefore,

index values over 1 indicate overlapping. The Index of parallelism

(Ip) provides information about the level of concurrence

of activities executed in parallel within a transaction