Andres Freund <[email protected]> writes:
> On December 25, 2015 7:10:23 PM GMT+01:00, Tom Lane <[email protected]>
> 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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