| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | "Saul, Jean Paolo" <paolo(dot)saul(at)verizonconnect(dot)com> |
| Cc: | Peter Geoghegan <pg(at)bowt(dot)ie>, Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #15609: synchronous_commit=off insert performance regression with secondary indexes |
| Date: | 2019-01-31 14:35:58 |
| Message-ID: | 20190131143558.GC22941@momjian.us |
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| Thread: | |
| Lists: | pgsql-bugs |
On Thu, Jan 31, 2019 at 04:08:39PM +1300, Saul, Jean Paolo wrote:
> Additional tests replacing BTREE indexes with HASH indexes indicate that hash
> indexes do not suffer from low-cardinality performance regression.
> However I cannot use hash indexes in our systems as they are discouraged.
Hash indexes are crash safe since PG 10 so their use is no longer
discouraged, at least from a project perspective.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
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