| From: | Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
| Cc: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: why partition pruning doesn't work? |
| Date: | 2018-06-15 13:58:16 |
| Message-ID: | ff44c06f-bdd8-3433-a995-e9babb36088f@2ndQuadrant.com |
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| Lists: | pgsql-hackers |
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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