Slow Planning Times - Mailing list pgsql-performance

From Saurabh Sehgal
Subject Slow Planning Times
Date
Msg-id CAB0Jq2KhM6guH6cPtV+upKQ=SSw6m3oXaQO=XnjqzTnyp+KEyw@mail.gmail.com
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Responses Re: Slow Planning Times  ("David G. Johnston" <david.g.johnston@gmail.com>)
Re: Slow Planning Times  (Saurabh Sehgal <saurabh.r.s@gmail.com>)
List pgsql-performance

I have the following query:

 explain (analyze, costs, timing) SELECT  rr.* FROM rpc rpc

                       INNER JOIN rr rr

                           ON rr.uuid = rpc.rr_id

                       INNER JOIN rs rs

                           ON rs.r_id = rpc.r_id

                       INNER JOIN role r

                           ON r.uuid = rs.r_id

                       LEFT JOIN spc spc

                           ON spc.rr_id = rpc.rr_id

                   WHERE rs.s_id = 'caa767b8-8371-43a3-aa11-d1dba1893601' 

                       and spc.s_id  = 'caa767b8-8371-43a3-aa11-d1dba1893601' 

                       and spc.rd_id  = '9f33c45a-90c2-4e05-a42e-048ec1f2b2fa'

                       AND rpc.rd_id = '9f33c45a-90c2-4e05-a42e-048ec1f2b2fa'

                       AND rpc.c_id = '9fd29fdc-15fd-40bb-b85d-8cfe99734987'

                       and spc.c_id  = '9fd29fdc-15fd-40bb-b85d-8cfe99734987'

                       AND rr.b_id = 'xyz'

                       AND (('GLOBAL' = ' NO_PROJECT_ID + "' ) OR (rr.p_id = 'GLOBAL'))

                       AND spc.permission_type IS null and spc.is_active  = true

                       AND rpc.is_active = true AND rr.is_active = true AND rs.is_active = true AND r.is_active = true 



I don't think it is super complex. But when I run explain analyze on this I get the following:

Planning Time: 578.068 ms
Execution Time: 0.113 ms

This is a huge deviation in planning vs. execution times. The explain plan looks good since the execution time is < 1ms. It doesn't matter though since the planning time is high. I don't see anything in the explain analyze output that tells me why the planning time is high. On average, the tables being joined have 3 indexes/table. How can I debug this?

Been stuck on this for weeks. Any help is appreciated. Thank you!

Saurabh

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