|From:||Yugo Nagata <nagata(at)sraoss(dot)co(dot)jp>|
|To:||Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>|
|Cc:||Jim Nasby <jim(dot)nasby(at)openscg(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>|
|Subject:||Re: Report the number of skipped frozen pages by manual VACUUM|
|Views:||Raw Message | Whole Thread | Download mbox|
On Fri, 10 Mar 2017 20:08:42 +0900
Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> On Fri, Mar 10, 2017 at 3:58 PM, Jim Nasby <jim(dot)nasby(at)openscg(dot)com> wrote:
> > On 3/6/17 8:34 PM, Masahiko Sawada wrote:
> >> I don't think it can say "1 frozen pages" because the number of
> >> skipped pages according to visibility map is always more than 32
> >> (SKIP_PAGES_THRESHOLD).
> > That's just an artifact of how the VM currently works. I'm not a fan of
> > cross dependencies like that unless there's a pretty good reason.
> Thank you for the comment.
> Agreed. Attached fixed version patch.
It seems that it says "frozen pages" if pinskipped_pages is not zero,
rather than about frozenskipped_pages.
How about writing as below?
appendStringInfo(&buf, ngettext("Skipped %u page due to buffer pins, "
"Skipped %u pages due to buffer pins, ",
appendStringInfo(&buf, ngettext("%u frozen page.\n", "%u frozen pages.\n",
> > BTW, I think there's already a function that handles the pluralization for
> > you. IIRC it's one of the things you can add to an ereport() call.
> What is the function name?
> Masahiko Sawada
> NIPPON TELEGRAPH AND TELEPHONE CORPORATION
> NTT Open Source Software Center
Yugo Nagata <nagata(at)sraoss(dot)co(dot)jp>
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