| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Noah Misch <noah(at)leadboat(dot)com>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>, Michael Paquier <michael(at)paquier(dot)xyz>, Peter Geoghegan <pg(at)bowt(dot)ie>, Andres Freund <andres(at)anarazel(dot)de> |
| Subject: | Re: conchuela timeouts since 2021-10-09 system upgrade |
| Date: | 2021-10-29 03:42:31 |
| Message-ID: | CA+hUKGKMHyKheU9G_-vVcN-WPJ-YBX=9LrHfJBVbVbAmcMtjzA@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Fri, Oct 29, 2021 at 4:20 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> It indeed is looking like 7f580aa made the problem go away on conchuela,
> but do we understand why? The only theory I can think of is "kernel bug",
> but while that's plausible for prairiedog it seems hard to credit for a
> late-model BSD kernel.
I have yet to even log into a DBSD system (my attempt to install the
6.0.1 ISO on bhyve failed for lack of a driver, or something), but I
do intend to get it working at some point. But I can offer a poorly
researched wildly speculative hypothesis: DBSD forked from FBSD in
2003. macOS 10.3 took FBSD's kqueue code in... 2003. So maybe a bug
was fixed later that they both inherited? Or perhaps that makes no
sense, I dunno. It'd be nice to try to write a repro and send them a
report, if we can.
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