On Tue, Aug 29, 2017 at 1:57 AM, Mithun Cy <mithun.cy@enterprisedb.com> wrote:
> All TPS are median of 3 runs
> Clients TPS-With Patch 05 TPS-Base %Diff
> 1 752.461117 755.186777 -0.3%
> 64 32171.296537 31202.153576 +3.1%
> 128 41059.660769 40061.929658 +2.49%
>
> I will do some profiling and find out why this case is not costing us
> some performance due to caching overhead.
So, this shows only a 2.49% improvement at 128 clients but in the
earlier message you reported a 39% speedup at 256 clients. Is that
really correct? There's basically no improvement up to threads = 2 x
CPU cores, and then after that it starts to improve rapidly? What
happens at intermediate points, like 160, 192, 224 clients?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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