| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Magnus Hagander <magnus(at)hagander(dot)net> |
| Cc: | David Steele <david(at)pgmasters(dot)net>, Andres Freund <andres(at)anarazel(dot)de>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Stephen Frost <sfrost(at)snowman(dot)net>, Peter Geoghegan <pg(at)bowt(dot)ie>, Michael Banck <michael(dot)banck(at)credativ(dot)de>, Michael Paquier <michael(at)paquier(dot)xyz>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: data_checksums enabled by default (was: Move --data-checksums to common options in initdb --help) |
| Date: | 2021-01-08 16:16:17 |
| Message-ID: | 20210108161617.GF18394@momjian.us |
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| Lists: | pgsql-hackers |
On Fri, Jan 8, 2021 at 05:06:24PM +0100, Magnus Hagander wrote:
> On Fri, Jan 8, 2021 at 4:57 PM Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > I think once we have better online enabling of checksums people can more
> > easily test the overhead on their workloads.
>
> Yeah, definitely.
>
> If they have equivalent hardware they can easily do it now -- create a
> replica, turn off checksums on replica, compare. That is, assuming we
> turn them on by default :) But being able to turn them both on and off
> without a large downtime is obviously going to make experimentation a
> lot more reasonable.
Can someone compute overhead on a real workload for us now?
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EnterpriseDB https://enterprisedb.com
The usefulness of a cup is in its emptiness, Bruce Lee
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