Horton

Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD

Mark Kirkwood <mark.kirkwood@catalyst.net.nz>

View thread
From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: Andres Freund <andres@2ndquadrant.com>, Palle Girgensohn <girgen@FreeBSD.org>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>, Robert Haas <robertmhaas@gmail.com>, Francois Tigeot <ftigeot@wolfpond.org>
Date: 2014-04-23T01:01:14Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Add shared_memory_type GUC.

On 23/04/14 00:19, Andres Freund wrote:
> Hi,
>
> Attached you can find a short (compile tested only ) patch implementing
> a 'shared_memory_type' GUC, akin to 'dynamic_shared_memory_type'. Will
> only apply to 9.4, not 9.3, but it should be easy to convert for it.
>

Have just tried this out (on Ubuntu 14.04 rather than Freebsd, as it is 
what I happened to be running), certainly works for me (big shared 
memory segment when I set it to 'sysv', only a tiny one when I use 'mmap').

The regression tests pass in both cases.

regards

Mark