Can you try to extract filter part as CTE? Like with filtered as (select ... where policyid = 123456) select ... (here comes original query but uses filtered table instead)
10 янв. 2018 г. 1:10 пользователь "Kumar, Virendra" < virendra.ku...@guycarp.com> написал: It did not seem to help. See attachment. Regards, Virendra -----Original Message----- From: Scott Marlowe [mailto:scott.marl...@gmail.com] Sent: Tuesday, January 09, 2018 6:00 PM To: Kumar, Virendra Cc: pgsql-performa...@postgresql.org Subject: Re: Performance of a Query On Tue, Jan 9, 2018 at 3:25 PM, Kumar, Virendra <virendra.ku...@guycarp.com> wrote: > Thank you Scott! > I have current work_mem set as 4MB, shared_buffers to 8GB, hugepages on. > I gradually increased the work_mem to 1GB but it did not help a bit. Am I missing something obvious. > From: Scott Marlowe [mailto:scott.marl...@gmail.com] > Sent: Tuesday, January 09, 2018 5:08 PM > To: Kumar, Virendra > Cc: pgsql-performa...@postgresql.org > Subject: Re: Performance of a Query Try it with something reasonable like 64MB and then post your query plans to explain.depesz and then here and let's compare. Note that some queries are just slow, and this one is handling a lot of data, so there's only so much to do if an index won't fix it. ________________________________ This message is intended only for the use of the addressee and may contain information that is PRIVILEGED AND CONFIDENTIAL. If you are not the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please erase all copies of the message and its attachments and notify the sender immediately. Thank you.
