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Re: Skylake-S warning

From:	Adrien Nayrat <adrien(dot)nayrat(at)anayrat(dot)info>
To:	Daniel Wood <hexexpert(at)comcast(dot)net>, <pgsql-hackers(at)postgresql(dot)org>
Subject:	Re: Skylake-S warning
Date:	2018-10-04 06:54:57
Message-ID:	6013cab6-0e7f-7938-cd37-72639d80af01@anayrat.info
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On 10/3/18 11:29 PM, Daniel Wood wrote:
> If running benchmarks or you are a customer which is currently impacted by
> GetSnapshotData() on high end multisocket systems be wary of Skylake-S.
>
>
> Performance differences of nearly 2X can be seen on select only pgbench due to
> nothing else but unlucky choices for max_connections. Scale 1000, 192 local
> clients on a 2 socket 48 core Skylake-S(Xeon Platinum 8175M @ 2.50-GHz) system.
> pgbench -S
>

Hi,

In response to

Skylake-S warning at 2018-10-03 21:29:39 from Daniel Wood

Responses

Re: Skylake-S warning at 2018-10-04 07:49:40 from Ants Aasma

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