| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: POC: Cache data in GetSnapshotData() |
| Date: | 2017-09-21 02:22:00 |
| Message-ID: | CA+TgmoYuuhFPifAPHBCFz95hANeMHVoRKtpon0sdAOYTJWiaiQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Sep 20, 2017 at 10:04 PM, Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com> wrote:
> My current tests show on scylla (2 socket machine with 28 CPU core) I
> do not see any improvement at all as similar to Jesper. But same tests
> on power2 (4 sockets) and Cthulhu(8 socket machine) we can see
> improvements.
OK, makes sense. So for whatever reason, this appears to be something
that will only help users with >2 sockets. But that's not necessarily
a bad thing.
The small regression at 1 client is a bit concerning though.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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