Re: Why creating GIN table index is so slow than inserting data into empty table with the same index?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Heikki Linnakangas <heikki.linnakangas@xxxxxxxxxxxxxxxx> writes:
> Tom Lane wrote:
>> I think a reasonable solution for this might be to keep an eye on
>> maxdepth and force a flush if that gets too large (more than a few
>> hundred, perhaps?).  Something like this:

> I fooled around with a balanced tree, which solved the problem but 
> unfortunately made the unsorted case slower.

Yeah, rebalancing the search tree would fix that, but every balanced
tree algorithm I know about is complicated, slow, and needs extra
memory.  It's really unclear that it'd be worth the trouble for a
transient data structure like this one.

			regards, tom lane

-- 
Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance

[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux