On 2005-08-12, Alvaro Herrera <[EMAIL PROTECTED]> wrote: > In light of this, may I ask whether it makes sense to compare the > performance of two runs with similar shared_buffer settings? With > O_DIRECT, I understand from this manpage that the OS is going to do > little or no page caching, so shared_buffers should be increased to > account for this fact. > > Am I missing something?
O_DIRECT should only be being used for the WAL, not for buffer I/O. -- Andrew, Supernews http://www.supernews.com - individual and corporate NNTP services ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
