Re: speeding up planning with partitions

From: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
To: jesper(dot)pedersen(at)redhat(dot)com
Cc: "Imai, Yoshikazu" <imai(dot)yoshikazu(at)jp(dot)fujitsu(dot)com>, "'Amit Langote'" <amitlangote09(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: speeding up planning with partitions
Date: 2019-03-05 00:50:42
Message-ID: 0bb0f410-bfbc-3ee5-946b-43e89e8cbd57@lab.ntt.co.jp
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Hi Jesper,

Thanks for the review. I've made all of the changes per your comments in
my local repository. I'll post the updated patches after diagnosing what
I'm suspecting a memory over-allocation bug in one of the patches. If you
configure build with --enable-cassert, you'll see that throughput
decreases as number of partitions run into many thousands, but it doesn't
when asserts are turned off.

On 2019/03/05 1:20, Jesper Pedersen wrote:
> I'll run some tests using a hash partitioned setup.

Thanks.

Regards,
Amit

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