Re: [HACKERS] disk pages, buffers and blocks

2003-02-06 Thread Tom Lane
=?iso-8859-1?q?Alice=20Lottini?= <[EMAIL PROTECTED]> writes: > we'd like to know how disk pages map to disk blocks. There is no real distinction between the concepts in Postgres --- "page" and "block" are interchangeable terms, and a buffer always holds exactly one of either. The number of filesy

[HACKERS] disk pages, buffers and blocks

2003-02-06 Thread Alice Lottini
Hi, we'd like to know how disk pages map to disk blocks. In particular, looking at the code it seems that one page can be built on several disk blocks while in the first lines of bufpage.h it is said that "a postgres disk page is an abstraction layered on top of *a* postgres disk block". As a matte