Productivity is related to total throughput of a computer system over time. The throughput is limited by how well a mix of jobs fits into available storage (memory and disk) and how fast the mix executes.
See: Memory Management
it's the page that has been modified in main memory(physical memory), but not yet rewritten in the disk.
Not freeing it when you no longer need the memory.
A simple linked-list is an approach is to store the freelist of memory blocks, where each node of the linked list contains a pointer to a single free block in the memory pool.
Java has a fairly sophisticated garbage collection system, and in general you don't worry about memory leaks, as they only happen in a few very specific circumstances (notably, when adding listeners to Swing GUI objects and not removing them). If you need more sophistcated memory management, java provides the clases in the java.lang.ref package.
function of memory management
MS-DOS does not have built-in memory management.
static memory management i.e we are fixed the memory location with there size & that fixed size jobs will appear
static memory management i.e we are fixed the memory location with there size & that fixed size jobs will appear
memory management
Memory management is the method by which a computer stores and retrieves memory. It works by the computer organizing data by types and storing it accordingly.
Memory Management
Role of the Memory management unit in Operating system Every program for its execution requires some space in computer memory which is provided by memory management unit using virtual memory that provides the external storage addressing location for the programs that does not have too much space in main memory for their execution and saved them in secondary memory but when required loaded them again in main memory. This deallocation and reallocation of programs in main memory deals with concurrency. At last, we say that loading capabilities of programs with the memory addressing is there in it.
Factors contributing to the effectiveness of stack-based memory management in computer systems include efficient memory allocation and deallocation, fast access to memory locations, and automatic memory management that helps prevent memory leaks and errors.
See: Memory Management
paging
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