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Briefly discuss on Bankers algorithm?
The resource-allocation graph algorithm is not applicable to a resource-allocation system with multiple examples for each resource type. So we go for bankers algorithm but is less well-organized that resource allocation graph scheme.
When a new procedure enters it must declare the maximum number of instances of every resource type that it may need. When a user request a set of resources, the system must verify whether the allocation of these resource will leave the system in a safe state. If it will the resources are allocated; otherwise the process must wait unless some other process releases enough resources.
Q. Suppose an operating system maps user-level threads to the kernel utilizing the many-to-many model where the mapping is done through the use of LWPs. In addition the system allo
Applications allocate memory in terms of the number of bytes that they need, but this level of granularity is too ?ne-grained for the operating system to manage the system memory i
what is file?explain the file access methods?
As we have discussed, page tables map virtual page addresses to physical page addresses. One of the advantages of using virtual addresses is that we can achieve complete separation
Explain the ThreadSwitchWithDelay Function used in Netware ThreadSwitchWithDelay( ) This command is used when threads are waiting for an event or resource but don't want t
For reading, most operating systems use demand paging. This means that pages are only read from the disk into physical memory when they are needed. In the page table, there is a re
How a virtual memory can be implemented? What are the benefits of using virtual memory?
We will brie?y introduce paging to ?nish off this lecture. When a process is loaded, not all of the pages are immediately loaded, since it's possible that they will not all be need
what is dual mode operation
Why Global variables are unacceptable Global variable, for instance, are unacceptable because they break the rules of self - containment. If all procedural components are runni
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