Re: Proposal of tunable fix for scalability of 8.4 - Mailing list pgsql-performance

Alvaro Herrera escribió:

> Simon's explanation, however, is at odds with the code.
>
> http://git.postgresql.org/?p=postgresql.git;a=blob;f=src/backend/storage/lmgr/lwlock.c
>
> There is "queue jumping" in the regular (heavyweight) lock manager, but
> that's a pretty different body of code.

I'll just embarrass myself by pointing out that Neil Conway described
this back in 2004:
http://archives.postgresql.org//pgsql-hackers/2004-11/msg00905.php

So Simon's correct.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.