Whats are the disadvantages of swapping in operating system?

Swapping is a mechanism in which a process can be swapped temporarily out of memory to a backing storage and then brought back into memory for continued execution.
The operating system copies as much data as possible into main memory, and leaves the rest on the disk. When the operating system needs data from the disk, it exchanges a portion of data in main memory with a portion of data on the disk.

I think this is the very good advantage in operating system..

At very practicle say is that swapping doesn't really have any disadvantage.

I think it depends on efficiency of algorithm

If we consider demand paging then it may lead to increase in page faults

but if we consider page replacement algorithms then there will be less page faults

overall we should talk about disadvantage of algorithm we are using not swapping .

From the posts it looks like it is thrashing which is the process of using virtual memory.
Am i correct guys ?
It is right to say that there in no effective disadvantages of swapping.
The only disadvantage of swapping occurs if your system has to rely too heavily on virtual memory, you will notice a significant performance drop.
But this disadvantages doesn't considered in todays PC(which came with at least 1 or 2 GB RAM).

mohit007kumar00From the posts it looks like it is thrashing which is the process of using virtual memory.
Am i correct guys ?
It is right to say that there in no effective disadvantages of swapping.
The only disadvantage of swapping occurs if your system has to rely too heavily on virtual memory, you will notice a significant performance drop.
But this disadvantages doesn't considered in todays PC(which came with at least 1 or 2 GB RAM).

I agree with you.

Question
If you activate page swopping is there not the disadvantage that if the power goes off you will loose all the information that you a r e working o

Leon LipschitzQuestion
If you activate page swopping is there not the disadvantage that if the power goes off you will loose all the information that you a r e working o

Of course, that is the limitation (not a disadvantage though)