Search Postgresql Archives

Re: createing indexes on large tables and int8

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

 



Tom Lane wrote:
> Janning Vygen <vygen@xxxxxxxxxxxx> writes:
>> After this i create the index and it took 10 hours just for one index (primary 
>> key). I have 100.000.000 rows with one PK (int8), two integer data values, 
>> and two FK (int8)
> 
> What PG version is this?  We did a fair amount of work on sort speed
> for 8.2.

yeah - back when i tested that during the 8.2 development cycle I got a
5-6x speedup with the external sort improvements.
ie sorting 1.8B rows (integer) went down from over 12h to about 2h10min
- but 10h sounds like a lot for "only" 100M rows - I wonder what kind of
hardware that is and how much concurrent activity is going on ...


Stefan


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux