Operating System Memory - Management Simulator For Mac

Operating System Memory - Management Simulator is a simple Java application (supplied as a JAR file - double-clickable on systems with a Java 1.2-compliant runtime environment installed) that shows graphically the state of a simulated multiprocessor computing system allocating memory to jobs of random sizes created at random times and with random lifetimes.

Processes represent allocated memory according to either standard first-fit, best fit-algorithms or next-fit, with or without memory compaction. Memory is displayed as a bar, with blocks colored gray, green or white to correspond to free blocks, runnable processes, and running processes, respectively.

The simulator displays a running tabulation of statistics relevant to job scheduling and memory management, such as average process completion time, average memory utilization, number of compactions, etc., which can be used to compare the benefits of each allocation strategy.

Finally, all pertinent parameters are configurable on the fly, such as average process size, interarrival time and completion time; in addition, the application is multi-threaded, permitting the operation of up to 10 processors (each implemented as a separate thread) to be simulated.