Bruce Momjian <pgman@candle.pha.pa.us> writes:
>> I find it hard to believe that VAC ANALYZE is all that much slower than
>> plain VACUUM anyway; fixing the indexes is the slowest part of VACUUM in
>> my experience. It would be useful to know exactly what the columns are
>> in a table where VAC ANALYZE is considered unusably slow.
> VACUUM ANALYZE does a huge number of adt/ function calls. It must be
> those calls that make ANALYZE slower. People report ANALYZE is
> certainly slower, and that is the only difference.
That's why I'm asking what the data is. The function calls per se can't
be that slow; I think there must be some datatype-specific issue.
With TOAST in the mix, TOAST fetches could very well be an issue, but
I didn't think 7.1 was being discussed ...
regards, tom lane
