Gregory Stark wrote:
A minute ago I said: AFAIK Opensolaris doesn't implement posix_fadvise() so there's no benefit. It would be great to hear if you could catch the ear of the right people to get an implementation committed. Depending on how the i/o scheduler system is written it might not even be hard -- the Linux implementation of WILLNEED is all of 20 lines. I noticed after sending it that that's slightly unfair. The 20-line function calls another function (which calls another function) to do the real readahead work. That function (mm/readahead.c:__do_page_cache_readahead()) is 48 lines.
It's implemented. I'm guessing it's not what you want to see though: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
