Re: Optimization for lazy_scan_heap

On Thu, Sep 8, 2016 at 11:27 PM, Jim Nasby <Jim.Nasby@bluetreble.com> wrote:
> On 9/8/16 3:03 AM, Masahiko Sawada wrote:
>>
>> Current manual vacuum doesn't output how may all_frozen pages we
>> skipped according to visibility map.
>> That's why I attached 0001 patch which makes the manual vacuum emit
>> such information.
>
>
> I think we should add that, and info about all-frozen skips, regardless of
> the rest of these changes. Can you submit that separately to the commitfest?
> (Or I can if you want.)

Yeah, autovacuum emits such information but manual vacuum doesn't.
I submitted that patch before[1] but patch was not committed, because
verbose output is already complicated.
But I will submit it again and start to discussion about that.

[1] https://www.postgresql.org/message-id/CAD21AoCQGTKDxQ6YfrJ0%2B%3Dev6A3i3pt2ULdWxCtwPLKR2E77jg%40mail.gmail.com

Regards,

--
Masahiko Sawada
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center