On Fri, Feb 18, 2011 at 2:48 PM, Josh Berkus <josh@agliodbs.com> wrote:
> On 2/18/11 11:44 AM, Robert Haas wrote:
>> On Fri, Feb 18, 2011 at 2:41 PM, Josh Berkus <josh@agliodbs.com> wrote:
>>> Second, the main issue with these sorts of macro-counters has generally
>>> been their locking effect on concurrent activity. Have you been able to
>>> run any tests which try to run lots of small externally-sorted queries
>>> at once on a multi-core machine, and checked the effect on throughput?
>>
>> Since it's apparently a per-backend limit, that doesn't seem relevant.
>
> Oh! I missed that.
>
> What good would a per-backend limit do, though?
>
> And what happens with queries which exceed the limit? Error message? Wait?
Well I have not RTFP, but I assume it'd throw an error. Waiting isn't
going to accomplish anything.
--
Robert Haas
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