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Home > Archive > PostgreSQL Performance > March 2006 > Query parallelism
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| luchot 2006-03-27, 9:40 am |
| Hello everybody ,
I use PostgreSQL 8.1.3 on a bi-processor Xeon and I would know how to do to enable a parallelism for
the execution of queries. Indeed , when I analyse the use of the cpus during a query the result is that for
some minutes a cpu is used while the other not and after it is the contrary. So they are not used at the same
time and i would know what i have to do in order cpus work together .
Thanks and sorry for my english,
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| Jim C. Nasby 2006-03-27, 9:40 am |
| On Mon, Mar 27, 2006 at 04:25:25PM +0200, luchot wrote:
> Hello everybody ,
> I use PostgreSQL 8.1.3 on a bi-processor Xeon and I would know how to do to enable a parallelism for
> the execution of queries. Indeed , when I analyse the use of the cpus during a query the result is that for
> some minutes a cpu is used while the other not and after it is the contrary. So they are not used at the same
> time and i would know what i have to do in order cpus work together .
> Thanks and sorry for my english,
PostgreSQL has no support for intra-query parallelism at this time.
Greenplum's MPP might do what you're looking for.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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