On Tue, Sep 24, 2013 at 08:42:15PM +0200, Fabien COELHO wrote:
meet all those goals simultaneously with simpler code, can we not?
int64 wait = (int64) (throttle_delay *
Min(7.0, -log(1 - pg_erand48(thread-random_state;
If you truncate roughly the
Hello Noah,
meet all those goals simultaneously with simpler code, can we not?
int64 wait = (int64) (throttle_delay *
Min(7.0, -log(1 - pg_erand48(thread-random_state;
If you truncate roughly the multipler, as it is done here with min, you
On Sun, Sep 22, 2013 at 08:46:55PM +0200, Fabien wrote:
pgbench: reduce and compensate throttling underestimation bias.
This is a consequence of relying on an integer random generator,
which allow to ensure that delays inserted stay reasonably in
range of the target average delay.
The bias
Split 2 of the initial submission
pgbench: reduce and compensate throttling underestimation bias.
This is a consequence of relying on an integer random generator,
which allow to ensure that delays inserted stay reasonably in
range of the target average delay.
The bias was about 0.5% with 1000
