Horton

Re: OpenBSD versus semaphores

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Mikael Kjellström <mikael.kjellstrom@mksoft.nu>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2019-01-08T14:25:51Z
Lists: pgsql-hackers 
=?UTF-8?Q?Mikael_Kjellstr=c3=b6m?= <mikael.kjellstrom@mksoft.nu> writes:
> On 2019-01-08 07:14, Tom Lane wrote:
>> Raising the annoyance factor considerably, AFAICT the only way to
>> increase these settings is to build your own custom kernel.

> You don't need to build your custom kernel to change those settings.
> Just add:
> kern.seminfo.semmni=20
> to /etc/sysctl.conf and reboot

Hm, I wonder when that came in?  Our documentation doesn't know about it.

			regards, tom lane

Commits

  1. Doc: update our docs about kernel IPC parameters on *BSD.

  2. Pad semaphores to avoid false sharing.