Andres Freund <> writes:
> On December 25, 2015 7:10:23 PM GMT+01:00, Tom Lane <> 
> wrote:
>> Seems like what you've got here is a kernel bug.

> I wouldn't go as far as calling it a kernel bug. Were still doing 300k tps. 
> And were triggering the performance degradation by adding another socket 
> (IIRC) to the poll(2) call.

Hmm.  And all those FDs point to the same pipe.  I wonder if we're looking
at contention for some pipe-related data structure inside the kernel.

                        regards, tom lane

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