On 08/18/2015 09:41 AM, Alvaro Herrera wrote:
>
> Alvaro Herrera wrote:
>
>> One thing to look at is the rate of WAL generation for a set number of
>> transactions. Maybe the later releases are generating more WAL due to
>> multixacts, for instance (prior to 9.3 these weren't wal-logged.)
>
> Also try 9.5alpha2, wherein bug #8470 is fixed, which is a big
> performance regression in 9.3 and 9.4.
Is there a reason we didn't backport this? (A point to a thread is just
fine).
jD
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