Re: Berserk Autovacuum (let's save next Mandrill)

[Laurenz Albe]

On Fri, 2020-03-13 at 07:00 -0500, Justin Pryzby wrote:
> > 2. The new feature can be completely disabled. This might be very
> > useful for people who suffer from auto-vacuum starvation.
> 
> > Yes, but in particular so it can be completely disabled easily.
> 
> How is it disabled ?  By setting scale_factor=100 ?
> 
> +               {                                                             
>                                                                               
>                            
> +                       "autovacuum_vacuum_insert_scale_factor",              
>                                                                               
>                            
> +                       "Number of tuple inserts prior to vacuum as a 
> fraction of reltuples",                                                       
>                                    
> +                       RELOPT_KIND_HEAP | RELOPT_KIND_TOAST,                 
>                                                                               
>                            
> +                       ShareUpdateExclusiveLock                              
>                                                                               
>                            
> +               },                                                            
>                                                                               
>                            
> +               -1, 0.0, 100.0                                                
>                                                                               
>                            
> 
> Note, vacuum_cleanup_index_scale_factor uses max: 1e10
> See 4d54543efa5eb074ead4d0fadb2af4161c943044

By setting the threshold very high, or by setting the scale factor to 100.

Yours,
Laurenz Albe