| From: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
|---|---|
| To: | Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Optimization for lazy_scan_heap |
| Date: | 2016-09-08 15:45:47 |
| Message-ID: | CAD21AoCuEXRoGegOeqdFk=XMnOU+XrrG4=Ls6S5w4g5SmsNAXw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Sep 8, 2016 at 11:27 PM, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)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.
Regards,
--
Masahiko Sawada
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
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