Re: WIP: [[Parallel] Shared] Hash

From: David Steele <david(at)pgmasters(dot)net>
To: Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>
Cc: Rafia Sabih <rafia(dot)sabih(at)enterprisedb(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Andres Freund <andres(at)anarazel(dot)de>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>
Subject: Re: WIP: [[Parallel] Shared] Hash
Date: 2017-03-28 15:51:56
Message-ID: 8e06a8f7-5c4c-8f01-dc7b-80d0c8856f7f@pgmasters.net
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Hi Thomas,

On 3/28/17 1:41 AM, Rafia Sabih wrote:
> On Mon, Mar 27, 2017 at 12:20 PM, Thomas Munro
>>
>> I thought this last point about Windows might be fatal to my design,
>> but it seems that Windows since at least version 2000 has support for
>> Unixoid unlinkability via the special flag FILE_SHARE_DELETE.

<...>

>
> Please find the attached file for the explain analyse output of these
> queries on head as well as patch.
> Would be working on analysing the performance of this patch on 300 scale factor.

I have marked this submission "Waiting for Author". A new patch is
needed to address Andres' comments and you should have a look at Rafia's
results.

Thanks,
--
-David
david(at)pgmasters(dot)net

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