Andres Freund <andres@2ndquadrant.com> writes:
> On 2014-08-30 13:50:40 -0400, Tom Lane wrote:
>> A possible compromise is to sort a limited number of
>> buffers ---- say, collect a few thousand dirty buffers then sort, dump and
>> fsync them, repeat as needed.
> Yea, that's what I suggested nearby. But I don't really like it, because
> it robs us of the the chance to fsync() a relfilenode immediately after
> having synced all its buffers.
Uh, how so exactly? You could still do that. Yeah, you might fsync a rel
once per sort-group and not just once per checkpoint, but it's not clear
that that's a loss as long as the group size isn't tiny.
regards, tom lane
