| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: file cloning in pg_upgrade and CREATE DATABASE |
| Date: | 2018-02-21 16:33:18 |
| Message-ID: | CA+TgmobyLhndujqZ3p6CVq0+vP95h7=_xQj+-CWsLD9_5EDBCA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Feb 20, 2018 at 10:00 PM, Peter Eisentraut
<peter(dot)eisentraut(at)2ndquadrant(dot)com> wrote:
> Some example measurements:
>
> 6 GB database, pg_upgrade unpatched 30 seconds, patched 3 seconds (XFS
> and APFS)
>
> similar for a CREATE DATABASE from a large template
>
> Even if you don't have a file system with cloning support, the special
> library calls make copying faster. For example, on APFS, in this
> example, an unpatched CREATE DATABASE takes 30 seconds, with the library
> call (but without cloning) it takes 10 seconds.
Nice results.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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