| From: | John Naylor <john(dot)naylor(at)2ndquadrant(dot)com> |
|---|---|
| To: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
| Cc: | Mithun Cy <mithun(dot)cy(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: Avoid creation of the free space map for small tables |
| Date: | 2019-01-29 14:42:37 |
| Message-ID: | CACPNZCtemd=ctF9+9P_WV33yXE9WOPu2EJcqgXrY4YwHoeVpuw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Jan 29, 2019 at 11:56 AM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> You can find this change in attached patch. Then, I ran the make
> check in src/bin/pgbench multiple times using test_conc_insert.sh.
> You can vary the number of times the test should run, if you are not
> able to reproduce it with this.
>
> The attached patch (clear_local_map_if_exists_1.patch) atop the main
> patch fixes the issue for me. Kindly verify the same.
I got one failure in 50 runs. With the new patch, I didn't get any
failures in 300 runs.
--
John Naylor https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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