Re: Slow queries on 9.3.1 despite use of index

Michael van Rooyen <michael(at)loot(dot)co(dot)za> writes:
> On 2014/04/28 07:50 PM, Tom Lane wrote:
>> Hm ... it seems pretty suspicious that all of these examples take just
>> about exactly 1 second longer than you might expect. I'm wondering
>> if there is something sitting on an exclusive table lock somewhere,
>> and releasing it after 1 second.

> I do have log_min_duration_statement = 1000, which may cause this.

Ah, I overlooked that detail. Never mind that theory then. Although
it might still be worth turning on log_lock_waits for awhile, just to
eliminate the possibility of lock-induced delays.

regards, tom lane