What is cpu-cache?
A smaller, faster memory which stores copies of the data from frequently used main memory locations.
🌐 Términos en otros idiomas:
CPU cache is high-speed static RAM (SRAM) located very close to the processor core. It minimizes the time the CPU spends waiting for data from the slower main memory (DRAM).
graph LR
Center["What is cpu-cache?"]:::main
Rel_caching["caching"]:::related -.-> Center
click Rel_caching "/terms/caching"
Rel_file_systems["file-systems"]:::related -.-> Center
click Rel_file_systems "/terms/file-systems"
Rel_thread["thread"]:::related -.-> Center
click Rel_thread "/terms/thread"
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🧒 Explícalo como si tuviera 5 años
If main memory is like a library across town, the [CPU](/es/terms/cpu) [cache](/es/terms/cache) is like the [stack](/es/terms/stack) of books on your desk. Grabbing a book from your desk is much faster than driving across town!
🤓 Expert Deep Dive
L1 (fastest), L2 and L3 (largest) caches minimize the 'memory wall'. Coherence protocols (MESI) ensure synchronization across cores.