| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
| Cc: | Noah Misch <noah(at)leadboat(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>, Michael Paquier <michael(at)paquier(dot)xyz>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, 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: | 2021-11-15 21:23:02 |
| Message-ID: | CA+hUKGJHA24SFAQureqf0EodkXv0W0hAZybcU9OpZAp3O2uegQ@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Mon, Nov 15, 2021 at 8:20 PM Andrey Borodin <x4mmm(at)yandex-team(dot)ru> wrote:
> I've sent some diagnostics info to Thomas offlist, but I do not understand how it can be used...
Summary for the record: defunct child, and gdb showed perl blocked in
select(), and ps revealed that Dragonfly internally maps select() onto
kevent() (wchan = kqread), which is interesting, but apparently not
new. (Hmmm, /me eyes the recent changes to events reported on
half-closed pipes[1].)
[1] https://github.com/DragonFlyBSD/DragonFlyBSD/commits/master/sys/kern/sys_generic.c
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