Upping my work_mem didn't seem to make a difference although it improved my
query speed on some other things. 
 
vacuum analyze fl.fl_edges;  
 
I ruled out clustering as the issue since I have dropped all indexes on that
table before I reran vacuum analyze.
 
I thought maybe there was some corruption somewhere so I had copied that
data to a temp table with a bulk insert
 
SELECT * INTO fl.fl_edges_temp FROM fl.fl_edges
 
(which ran in about 80 secs) - total records 2,231,947
 
Then I did a 
truncate table fl.fl_eges
 
and repopulated which took about 90 seconds.  And now vacuuming patiently
for the past 15 minutes or so.
 
Any other thoughts,
Thanks
Regina
 
 
 
 
 >  I'm going to up my work_mem once my current state load is done or at
least at a safe breaking point.
> 
>  Thanks,
> Regina
 
 
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