Re: [GENERAL] The consequenses of interrupted vacuum

2016-10-27 Thread Bill Moran
On Thu, 27 Oct 2016 10:44:03 -0400 Tom Lane wrote: > > I'm asking for cases of large tables where autovacuum frequently gets > > interrupted. I'm trying to understand if the partial runs are at least > > making _some_ progress so the next vacuum has less to do, or if this is > > a serious problem

Re: [GENERAL] The consequenses of interrupted vacuum

2016-10-27 Thread Tom Lane
Bill Moran writes: > Does interrupting a VACUUM (not FULL) rollback all the work it has done > so far, or is the work done on a page by page basis such that at least > some of the pages in the table have been vacuumed? Depends on how big the table is, how many dead tuples there are, and what main

[GENERAL] The consequenses of interrupted vacuum

2016-10-27 Thread Bill Moran
Very specific question: Does interrupting a VACUUM (not FULL) rollback all the work it has done so far, or is the work done on a page by page basis such that at least some of the pages in the table have been vacuumed? I'm asking for cases of large tables where autovacuum frequently gets interrupt