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From: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
To: David Rowley <david.rowley@2ndquadrant.com>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Cc: Dmitry Dolgov <9erthalion6@gmail.com>
Cc: Jeff Janes <jeff.janes@gmail.com>
Cc: Ashutosh Bapat <ashutosh.bapat@enterprisedb.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: why partition pruning doesn't work?
Date: Fri, 15 Jun 2018 09:58:16 -0400
Message-ID: <ff44c06f-bdd8-3433-a995-e9babb36088f@2ndQuadrant.com> (raw)
In-Reply-To: <ba0c9a8d-61a8-b50b-6279-535174ac985b@2ndQuadrant.com>
References: <CAFj8pRBjrufA3ocDm8o4LPGNye9Y+pm1b9kCwode4X04CULG3g@mail.gmail.com>
	<CA+q6zcVX9Gp0o06AXrozc0k4zkfera_wQiSyTkKXzgCsEqM6Yg@mail.gmail.com>
	<569483c5-a273-6537-1b5d-7a271ce439fb@lab.ntt.co.jp>
	<CAKJS1f9y_L-sXHwh74CGOoYcQRj8mDX9PnJqJLbpKujH1AS2ow@mail.gmail.com>
	<CAKJS1f-D1Tbi=Ozug7wfiZRf7wJs3tJ1G0cX5MK0nwstrc++tA@mail.gmail.com>
	<e6e751ea-0db4-0e7b-9513-97460edb60b3@lab.ntt.co.jp>
	<CAKJS1f_jatg5+qbrha2fGog63t3VdbNnOkYZitJtx-uo5H5EsQ@mail.gmail.com>
	<22805.1528386192@sss.pgh.pa.us>
	<CAKJS1f9xHoMntARi1RhqwAVZ-E0qp5a5f+Tf_chH9Vr8xOWiAw@mail.gmail.com>
	<21787.1528428171@sss.pgh.pa.us>
	<CAKJS1f9JMif8oCfM! SUQxmFEYmRSbpSvC7H99g1OaAZQSeBU5jA@mail.gmail.com>
	<6366.1528571895@sss.pgh.pa.us>
	<12624.1528578026@sss.pgh.pa.us>
	<CAKJS1f--wyKiJFS0WeGFFYT7Rz1Yy=zFLEaS6n=J-e9uzn61dA@mail.gmail.com>
	<26279.1528670981@sss.pgh.pa.us>
	<17850.1528755844@sss.pgh.pa.us>
	<b91ddbe3-f45c-ec4f-3799-b5612f78bf38@2ndQuadrant.com>
	<ba0c9a8d-61a8-b50b-6279-535174ac985b@2ndQuadrant.com>



On 06/12/2018 07:47 AM, Andrew Dunstan wrote:
>
>
> On 06/11/2018 06:41 PM, Andrew Dunstan wrote:
>>
>>
>> On 06/11/2018 06:24 PM, Tom Lane wrote:
>>>
>>> If we had any buildfarm critters running valgrind on
>>> RELCACHE_FORCE_RELEASE or CLOBBER_CACHE_ALWAYS builds, they'd have
>>> detected use of uninitialized memory here ... but I don't think we have
>>> any.  (The combination of valgrind and CCA would probably be too 
>>> slow to
>>> be practical :-(, though maybe somebody with a fast machine could do
>>> the other thing.)
>>>
>>>
>>
>>
>> I don't have a fast machine, but I do have a slow machine already 
>> running valgrind and not doing much else :-) Let's see how lousyjack 
>> does with -DRELCACHE_FORCE_RELEASE
>>
>>
>
>
> It added about 20% to the run time. That's tolerable, so I'll leave it 
> on.
>
>


OK, lousyjack is back online with this, new and improved. It currently 
takes 7.5 hours for a run.  Should I also add -DCATCACHE_FORCE_RELEASE?

cheers

andrew

-- 
Andrew Dunstan                https://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services





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