| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
| Cc: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Thom Brown <thom(at)linux(dot)com>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Proposal: "Causal reads" mode for load balancing reads without stale data |
| Date: | 2016-03-23 11:39:04 |
| Message-ID: | CA+TgmoZgSH3v1Cu2nLb27=JU_4RtBwpAM548VtkVWR5PvqMgwg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Mar 23, 2016 at 7:34 AM, Thomas Munro
<thomas(dot)munro(at)enterprisedb(dot)com> wrote:
> synchronous_commit TPS
> ==================== ====
> off 9234
> local 1223
> remote_write 907
> on 587
> remote_apply 555
>
> synchronous_commit TPS
> ==================== ====
> off 3937
> local 1984
> remote_write 1701
> on 1373
> remote_apply 1349
Hmm, so "remote_apply" is barely more expensive than "on". That's encouraging.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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