On Fri, Nov 30, 2012 at 1:42 PM, Jeff Janes <jeff.ja...@gmail.com> wrote:
> Can you report the EXPLAIN (ANALYZE, BUFFERS) instead? Thanks, here they are: for the approx 65 million row approx 50 min version: EXPLAIN (ANALYZE, BUFFERS) select massive_expansion(ctn,the_range) from critical_visitors; "Seq Scan on critical_visitors (cost=0.00..168722.28 rows=628778 width=40) (actual time=0.655..3003921.066 rows=628778 loops=1)" " Buffers: shared hit=4513040 read=1591722 dirtied=5234 written=10" "Total runtime: 3004478.053 ms" for the approx 30 million row approx 4 min version: EXPLAIN (ANALYZE, BUFFERS) select massive_expansion(ctn,the_range) from critical_visitors; "Seq Scan on critical_visitors (cost=0.00..746587.90 rows=2782315 width=40) (actual time=393.001..277108.379 rows=2782315 loops=1)" " Buffers: shared hit=26370078 read=400301 dirtied=33772 written=1030" "Total runtime: 278988.544 ms"
