Status of the buffer cache in 2.3.7+

Steve Bergman (steve@netplus.net)
Sun, 27 Jun 1999 16:00:54 +0000

Forgive me if this seems a really dense question, but with the new
unified page cache, is the buffer cache completely obsolete? There is
still a number for it in top and vmstat (which comes from /proc, I
suppose) which seems to increase practically without bound as block
devices are read. I assume the number is bogus now.

Also, I am trying to understand how much difference this actually makes
as far as memory usage is concerned. On a "typical system" (yeah, right
;-) how much duplication of cache was really occurring. And is this
significant for low memory systems as well as large memory ones?

Thank you for any enlightenment.

-Steve Bergman

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