From: | Tatsuo Ishii <ishii(at)postgresql(dot)org> |
---|---|
To: | andres(at)2ndquadrant(dot)com |
Cc: | girgen(at)FreeBSD(dot)org, pgsql-hackers(at)postgresql(dot)org, robertmhaas(at)gmail(dot)com, ftigeot(at)wolfpond(dot)org |
Subject: | Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD |
Date: | 2014-07-03 10:15:32 |
Message-ID: | 20140703.191532.933784435488339338.t-ishii@sraoss.co.jp |
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Thread: | |
Lists: | pgsql-hackers |
Hi,
> 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.
>
> Greetings,
>
> Andres Freund
I have rebased Andres's patch against 9.3-STABLE tree. Please take a
look at attached patches and let me know if you find anything strange.
I am going to test the patch on a huge HP machine: DL980G7/64
cores/2TB mem. With the patch I would be able to report back if using
SysV shared mem fixes the 9.3 performance problem.
Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp
Attachment | Content-Type | Size |
---|---|---|
0001-Add-shared_memory_type-GUC-9.3.patch | text/x-patch | 6.8 KB |
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