Stephen Frost <sfr...@snowman.net> writes: > I wonder if it would help to actually tell the OS to read in buffers > that we're *evicting*... On the general notion that if the OS already > has them buffered then it's almost a no-op, and if it doesn't and it's > actually a 'hot' buffer that we're gonna need again shortly, the OS will > have it.
But if it's actually gone cold, you're just forcing unnecessary read I/O, not to mention possibly causing something slightly warmer to be lost from kernel cache. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers