Horton

Re: Perfomance degradation 9.3 (vs 9.2) for FreeBSD

Andrew Dunstan <andrew@dunslane.net>

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From: Andrew Dunstan <andrew@dunslane.net>
To: Stephen Frost <sfrost@snowman.net>
Cc: Tatsuo Ishii <ishii@postgresql.org>, girgen@FreeBSD.org, pgsql-hackers@postgresql.org, robertmhaas@gmail.com, ftigeot@wolfpond.org
Date: 2014-04-22T01:06:35Z
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 04/21/2014 08:49 PM, Stephen Frost wrote:
> * Tatsuo Ishii (ishii@postgresql.org) wrote:
>> I observe performance degradation with PostgreSQL 9.3 vs 9.2 on Linux
>> as well.  The hardware is HP DL980G7, 80 cores, 2TB mem, RHEL 6,
>> pgbench is used (read only query), scale factor is 1,000 (DB size
>> 15GB).
> Can you isolate the sysv-vs-mmap patch and see what happens with just
> that change..?


This is exactly why we need a benchfarm.

I actually have a client working based on Greg Smith's pgbench tools.

What we would need is a way to graph the results - that's something 
beyond my very rudimentary expertise in web programming. If anyone feels 
like collaborating I'd be glad to hear from them (The web site is 
programmed in perl + TemplateToolkit, but even that's not immutable. I'm 
open to using, say, node.js plus one of its templating engines.


cheers

andrew