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


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