itemprop="text">
itemprop="text"> When using top/free to see memory
usage in Unix, there're 'used/free/shared/buffers/cached' categories. What do those
exactly mean? I've tried to look for a wiki but didn't find detail information. Please
advise, thanks.
class="normal">Answer
Most of
that information is in the man page for
top.
Shared:
The amount of shared memory used by a task. It simply reflects memory that could be
potentially shared with other processes.
Free:
Actually unused memory.
Used: Allocated to
processes.
Buffers: Memory used for various OS
buffers. Such as OS file-structures.
Cache:
Memory used for various OS caches, generally the block and file
caches.
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