KwickClips Computer Systems · 38 sec · free
What is virtual memory?
Short answer. Storage used as if it were extra RAM.
What is thrashing?
Too much swapping between RAM and disk.
Virtual memory
| OS uses disk as extra RAM |
| Unused pages move to disk |
| Slower than real RAM |
Remember
| Too much swapping: thrashing |
RAM is full, but you open one more app. The OS uses virtual memory. It treats disk as extra RAM. Unused pages move to disk. It is slower. Remember. Too much swapping is thrashing.
This clip is from the full lesson: Secondary Storage: Magnetic, Optical, Solid State and Cloud — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Computer Applications (165), CBSE Class 9 Computer Applications (165), CBSE Class 9 Computer Applications (165), CBSE Class 11 Information Technology (802)
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