| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Jim Nasby <jim(at)nasby(dot)net> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: COPY / extend ExclusiveLock |
| Date: | 2012-03-25 21:14:48 |
| Message-ID: | 20528.1332710088@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Jim Nasby <jim(at)nasby(dot)net> writes:
> On 3/22/12 2:13 PM, Stephen Frost wrote:
>> Has anyone been working on or considering how to improve the logic
>> around doing extends on relations to perhaps make larger extensions
>> for larger tables? Or make larger extensions when tables are growing
>> very quickly?
> I know that there's been discussion around this. Way back in the day we extended relations one page at a time. I don't remember if that was changed or not.
No, it's still on the to-do list. One issue is that you probably don't
want individual insertion queries taking big response-time hits to do
large extensions themselves --- so somehow the bulk of the work needs to
be pushed to some background process.
regards, tom lane
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