What exactly is a cache? What is it and why is it important?
Caches are employed in almost all of our modern devices. It may be found in a variety of hardware components as well as software. The purpose of caching is to move data from slow memory to fast memory so that it may be accessed more quickly.
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2. Introduction :
• A Cache is a Reserved storage location that collects
temperory data to help websites , browser and apps
to load faster.
• Caching occurs under the direction of the cache
manager, which operates continuously while
Windows is running.
3. What is Cache Windows?
• The Cache is a section of computer’s
memory where your temporary internet
files are stored.
• Saving internet files is your computer’s
way of speeding up the process of
opening web pages faster.
4. Cache Memory
• Cache Memory is a very high speed memory.
• It is used to speed up and synchronizing with high speed
CPU
• Cache is an extremely fast memory type that acts as a
buffer between RAM and CPU
6. Level 1 Cache
• It is a type of memory in which data is stored and
accepted that are immediately stored in CPU.
• Memory Size : 2KB to 64KB
• It is integrated inside the CPU
• It has two types of Cache
1. Instruction Cache
2. Data Cache
7. Level 2 Cache
• The Level 2 Cache could be Inside the CPU or
outside the CPU.
• Memory Size : 256KB to 512KB.
• It is the fastest memory which has faster access
time where data is temporarily stored for faster
access.
8. Level 3 Cache
• Level 3 cache is specialized memory developed to
improve the performance of L1 and L2.
• It usually double the speed of DRAM.
• With multicore processors, each core can have
dedicated L1 and L2 cache, but they can share an L3
cache..
9. Cache Mapping
• Cache mapping is a technique by which the
contents of main memory are brought into
the cache memory.
• There are three Different types of Cache Mapping:
i) Direct Mapping
ii) Associative Mapping
iii) Set-Associative Mapping
10. i) Direct Mapping
• In Direct Mapping , assign
each memory block to a
specific line in the cache.
• Direct Mapping performance is
directly proportional to the Hit
Radio.
11. ii) Associative Mapping
• Any block can go
into any line of the
cache.
• It is considered to
be the fastest and
most flexible
mapping form.
12. iii) Set-associative Mapping
• Set-associative Mapping
addresses the problem of
possible thrashing in the
direct mapping method.
• It combines the best of
direct and associative cache
memory technique.
13. Application of Cache Memory
• It reduce the average time to access data from the
Main memory.
• Cache memory improves the efficiency of data
retrieval.
• The correspondence between the main memory
blocks and those in the cache is specified by a mapping
function.