size of shared memory, buffer cache, page cache, etc.

size of shared memory, buffer cache, page cache, etc.

[Zou Min]

Hi, all,

Sorry to bother you to answer these naive questions about linux mm.

I know that in linux memory management, besides the pages actually used by
the some workload, there are also some shared pages (e.g. Copy-On-Write or 
IPC shared memory), disk caches (buffer/page cache), swap cache, dentry cache,
slab cache, etc, in order to improve the performance.

My 1st question is: usually, how can I roughly found out the size of the part 
of memory which is occupied by all those shared pages, different caches?
(assume there is some processes running)

2nd question is: how are those special pages managed differently, when there
is only single process running and when there are multiple processes running?

Thank you.

-- 
Cheers!
--Zou Min 

zoum@comp.nus.edu.sg			URL: http://www.comp.nus.edu.sg/~zoum
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