Eclipse has the problem not the PDQ library

http://dev.eclipse.org/newslists/news.eclipse.newcomer/msg02312.html

Problem: PDQ Java distribution is not compatible with Java 6?

These 3 kind of errors occur during the compile of the API:

Severity and Description Path Resource Location Creation Time Id

The method printf(String, Object[]) in the type PrintStream is not applicable for the arguments (String, Parameters) Thesis/src/com/perfdynamics/pdq MVA.java line 432 1185383257573 64

The method printf(String, Object[]) in the type PrintStream is not applicable for the arguments (String, String) Thesis/src/com/perfdynamics/pdq PDQ.java line 381 1185383257470 51

The method printf(String, Object[]) in the type PrintStream is not applicable for the arguments (String) Thesis/src/com/perfdynamics/pdq PDQ.java line 379 1185383257470 50

I should try to backdate the java version to 5.

Notes for Observational/Operational Laws

A = number of arrivals at the queueing center
C = number of completions departing the queueing center
T = Measurement or observation period
B = Total time the system was busy during T

arrival rate: lamda = A/T

throughput: X = C/T

mean service time: S = B/C

utilization: U = B/T (it is actually a special case of Little's Law)


Little's LAW: Q = lamda x R (or L=AW)
Q: average queue length
R: average residence time spent at the center (time waiting in line + service time)

Constrains

- no blocking mechanisms involved.
- this means that only nodes with infinite servers (delay centers), or nodes with infinite capacity servers are going to be used.