On 28 January 2016 at 00:13, Bill Moran <wmo...@potentialtech.com> wrote:
> On Wed, 27 Jan 2016 23:54:37 +0100 > Ivan Voras <ivo...@gmail.com> wrote: > > > So, question #1: WTF? How could this happen, on a regularly vacuumed > > system? Shouldn't the space be reused, at least after a VACUUM? The issue > > here is not the absolute existence of the bloat space, it's that it's > > constantly growing for *system* tables. > > With a lot of activity, once a day probably isn't regular enough. > > I sort of see what you are saying. I'm curious, though, what goes wrong with the following list of expectations: 1. Day-to-day load is approximately the same 2. So, at the end of the first day there will be some amount of bloat 3. Vacuum will mark that space re-usable 4. Within the next day, this space will actually be re-used 5. ... so the bloat won't grow. Basically, I'm wondering why is it growing after vacuums, not why it exists in the first place?
