Re: New GUC to sample log queries

Sergei Kornilov <sk@zsrv.org>

From: Sergei Kornilov <sk@zsrv.org>

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

Cc: Adrien Nayrat <adrien.nayrat@anayrat.info>, Thomas Munro <thomas.munro@enterprisedb.com>, Dmitry Dolgov <9erthalion6@gmail.com>, Tomas Vondra <tomas.vondra@2ndquadrant.com>, "vik.fearing@2ndquadrant.com" <vik.fearing@2ndquadrant.com>, Robert Haas <robertmhaas@gmail.com>, Michael Paquier <michael@paquier.xyz>, David Rowley <david.rowley@2ndquadrant.com>, Pg Hackers <pgsql-hackers@postgresql.org>

Date: 2018-11-30T12:29:30Z

Lists: pgsql-hackers

Hi

> Ah, I feared that some compiler would not be smart enough to be silent
> about that. I hope it does not emit a warning with this patch?
Yes, with this change build is clean. Thank you

PS: currently i use old gcc (Debian 4.9.2-10+deb8u1) 4.9.2

regards, Sergei

Commits

Use pg_strong_random() to select each server process's random seed.
- 4203842a1cd0 12.0 landed
Use a separate random seed for SQL random()/setseed() functions.
- 6645ad6bdd81 12.0 landed
Marginal performance hacking in erand48.c.
- 6b9bba2df8d4 12.0 landed
Fix latent problem with pg_jrand48().
- e09046641114 12.0 landed
- f256995e33d2 10.7 landed
- d58e01f8abe2 11.2 landed
Silence compiler warning
- 9dc122585551 12.0 landed
Add log_statement_sample_rate parameter
- 88bdbd3f7460 12.0 landed