Re: deadlock-hard flakiness - Mailing list pgsql-hackers

On Wed, Feb 8, 2023 at 2:10 PM Andres Freund <andres@anarazel.de> wrote:
> I'm fairly sure I've seen this failure on the buildfarm as well, but I'm too
> impatient to wait for the buildfarm database query (it really should be
> updated to use lz4 toast compression).

Failures in deadlock-hard (excluding crashes, because they make lots
of tests appear to fail bogusly) all occurred on animals that are no
longer with us:

  animal   |  last_report_time
-----------+---------------------
 anole     | 2022-07-05 12:31:02
 dory      | 2021-09-30 04:50:08
 fossa     | 2021-10-28 01:50:29
 gharial   | 2022-07-05 22:04:23
 hyrax     | 2021-05-10 15:11:53
 lousyjack | 2020-05-18 10:03:03

The failures stopped in mid '21 as far as my scraper noticed:

 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=anole&dt=2021-06-13%2016:31:57
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=anole&dt=2021-06-11%2017:13:44
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-06-11%2006:14:39
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-05-31%2006:41:25
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-05-23%2019:43:04
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-05-16%2000:36:16
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-05-10%2000:42:43
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=anole&dt=2021-05-08%2006:34:13
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-04-22%2021:24:02
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=fossa&dt=2021-04-08%2019:36:06
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-03-22%2013:26:03
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-03-13%2007:24:02
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-03-05%2019:39:46
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2021-01-08%2003:16:28
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=dory&dt=2020-12-28%2011:05:15
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2020-11-27%2015:39:27
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=anole&dt=2020-10-25%2023:47:21
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2020-09-29%2021:35:52
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2020-07-29%2014:34:49
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-05-15%2005:03:03
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-05-14%2013:33:03
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-05-13%2022:03:03
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-05-12%2015:03:03
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-05-11%2022:03:06
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-05-10%2022:33:02
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2020-01-14%2010:11:30
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2019-12-04%2001:38:28
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=anole&dt=2019-11-12%2005:43:59
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2019-10-16%2016:43:58
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=anole&dt=2019-07-18%2021:57:59
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2019-07-10%2005:59:16
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hyrax&dt=2019-07-08%2015:02:17
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2019-06-23%2004:17:09
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=gharial&dt=2019-06-12%2021:46:24
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hyrax&dt=2017-04-09%2021:58:03
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hyrax&dt=2017-04-08%2021:58:04
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hyrax&dt=2017-04-08%2005:19:17
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hyrax&dt=2017-04-07%2000:23:39
 https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hyrax&dt=2017-04-05%2018:58:04