| From: | Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com>, Palle Girgensohn <girgen(at)FreeBSD(dot)org> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, Francois Tigeot <ftigeot(at)wolfpond(dot)org> |
| Subject: | Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD |
| Date: | 2014-04-23 01:01:14 |
| Message-ID: | 535710DA.2050004@catalyst.net.nz |
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| Thread: | |
| Lists: | pgsql-hackers |
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
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