Re: RES: Priority to a mission critical transaction

"Carlos H. Reimer" <carlos.reimer@opendb.com.br> writes:
> There is an article about "Lowering the priority of a PostgreSQL query"
> (http://weblog.bignerdranch.com/?p=11) that explains how to use the
> setpriority() to lower PostgreSQL processes.

> I?m wondering how much effective it would be for i/o bound systems.

That article isn't worth the electrons it's written on.  Aside from the
I/O point, there's a little problem called "priority inversion".  See
the archives for (many) past discussions of nice'ing backends.

            regards, tom lane