On Fri, 2004-11-05 at 06:20, Steinar H. Gunderson wrote:
> You mean, like, open(filename, O_DIRECT)? :-)
This disables readahead (at least on Linux), which is certainly not we
want: for the very case where we don't want to keep the data in cache
for a while (sequential scans, VACUUM), we also want aggressive
readahead.
-Neil