| From: | Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Kuntal Ghosh <kuntalghosh(dot)2007(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Add pgstathashindex() to get hash index table statistics. |
| Date: | 2017-03-23 17:54:56 |
| Message-ID: | CAE9k0PkTtKFB3YndOyQMjwuHx+-FtUP1ynK8E-nHtetoow3NtQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi,
On Tue, Feb 7, 2017 at 9:23 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Mon, Feb 6, 2017 at 10:40 PM, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>>> Maybe we should call them "unused pages".
>>
>> +1. If we consider some more names for that column then probably one
>> alternative could be "empty pages".
>
> Yeah, but I think "unused" might be better. Because a page could be
> in use (as an overflow page or primary bucket page) and still be
> empty.
>
Based on the earlier discussions, I have prepared a patch that would
allow pgstathashindex() to show the number of unused pages in hash
index. Please find the attached patch for the same. Thanks.
--
With Regards,
Ashutosh Sharma
EnterpriseDB:http://www.enterprisedb.com
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Allow-pgstathashindex-to-show-unused-pages-v1.patch | application/x-patch | 5.6 KB |
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