Re: partitioned tables referenced by FKs

Jesper Pedersen <jesper.pedersen@redhat.com>

From: Jesper Pedersen <jesper.pedersen@redhat.com>

To: Alvaro Herrera <alvherre@2ndquadrant.com>

Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, Pg Hackers <pgsql-hackers@postgresql.org>

Date: 2019-03-22T13:01:34Z

Lists: pgsql-hackers

Hi Alvaro,

On 3/21/19 6:18 PM, Alvaro Herrera wrote:
> On 2019-Mar-21, Jesper Pedersen wrote:
>> pgbench -M prepared -f select.sql ....
>>
>> I'm seeing 82.64% spent in GetCachedPlan(). plan_cache_mode is auto.
> 
> Hmm, I can't reproduce this at all ...  I don't even see GetCachedPlan
> in the profile.  Do you maybe have some additional patch in your tree?
> 

No, with 7df159a62 and v7 compiled with "-O0 -fno-omit-frame-pointer" I 
still see it.

plan_cache_mode = auto
   2394 TPS w/ GetCachePlan() @ 81.79%

plan_cache_mode = force_generic_plan
  10984 TPS w/ GetCachePlan() @ 23.52%

perf sent off-list.

Best regards,
  Jesper

Commits

Support foreign keys that reference partitioned tables
- f56f8f8da6af 12.0 landed
Fix partitioned index creation bug with dropped columns
- 7009f1a2df65 11.3 landed
- 126d63122232 12.0 landed
Improve psql's \d display of foreign key constraints
- 1af25ca0c2d9 12.0 cited
Fix dependency recording bug for partitioned PKs
- 7e7c57bbb2eb 12.0 landed
Add index_get_partition convenience function
- a6da0047158b 12.0 landed
Restore RI trigger sanity check
- 815b20ae0c6e 12.0 landed
- 04f9b449aa30 11.3 landed
Foreign keys on partitioned tables
- 3de241dba86f 11.0 cited