Hi there,
I'm sorry for a stupid question but I'm really stuck.
A query:
SELECT COUNT(*) FROM "lingq_card" WHERE "lingq_card"."context_id" = ...;
An hour ago it took 8 seconds, one minute ago the same query took just only
7 milliseconds.
Any ideas why the execution time varies so wildly?
Explain Analyze gives:
Aggregate (cost=2000.08..2000.09 rows=1 width=0) (actual time=6.962..6.963
rows=1 loops=1)
-> Index Scan using lingq_card_context_id on lingq_card
(cost=0.00..1998.68 rows=561 width=0) (actual time=0.025..5.045 rows=2830
loops=1)
Index Cond: (context_id = 68672)
Total runtime: 7.011 ms
The lingq_cards table contains about 1.4 million rows.
Thanks,
Mike
