Re: Notes about Pl/PgSQL assignment performance - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: Notes about Pl/PgSQL assignment performance
Date
Msg-id 20171219140826.bhpwyyy3alyvlice@alvherre.pgsql
Whole thread Raw
In response to Re: Notes about Pl/PgSQL assignment performance  (Andrey Zhidenkov <pensnarik@gmail.com>)
List pgsql-hackers
Andrey Zhidenkov wrote:
> I've digged into the source code a little bit and found that chain:
> 
> PLPGSQL_STMT_ASSIGN -> exec_stmt_assign() -> exec_assign_expr()
> -> exec_eval_expr() -> exec_run_select()
> -> SPI_execute_plan_with_paramlist() -> _SPI_execute_plan() which finnaly
> calls PushActiveSnapshot() and PopActiveSnapshot() wich just do memory
> context allocations and use malloc() to copy snaphot.
> 
> Maybe I have missed something?

Yes.

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


pgsql-hackers by date:

Previous
From: Marina Polyakova
Date:
Subject: Re: WIP Patch: Pgbench Serialization and deadlock errors
Next
From: Fabien COELHO
Date:
Subject: Re: WIP Patch: Pgbench Serialization and deadlock errors