[postgis-users] S...L...o.....w..@^ performance on SPARC/Solaris

[Shaun Kolomeitz]

Thanks Graeme and Paul,

I had "assumed" that ST_Within would do the (a.the_geom && b.the_geom)
for me on Solaris, and for some reason this was not the case.
Using the explicit "&&" improved the performance of the queries from 35+
secs to 3 - 5 Secs. Not great but fair enough.
The only other difference is that I am using GEOS 3.0.0 on Solaris and
GEOS 2.2.3 on Ubuntu.
In the future we will look at using Ubuntu as the PostGIS Server.

Many thanks,
Shaun Kolomeitz, 
Senior Technical Officer
Systems & Support Branch
Qld Parks and Wildlife
Environmental Protection Agency

+----------------------------------------------------------------+
Think B4U Print
1 ream of paper = 6% of a tree and 5.4kg CO2 in the atmosphere
3 sheets of A4 paper = 1 litre of water
+----------------------------------------------------------------+

___________________________
Disclaimer

WARNING: This e-mail (including any attachments) has originated from a Queensland Government department and may contain information that is confidential, private, or covered by legal professional privilege, and may be protected by copyright.  

You may use this e-mail only if you are the person(s) it was intended to be sent to and if you use it in an authorised way.  No one is allowed to use, review, alter, transmit, disclose, distribute, print or copy this e-mail without appropriate authority.  If you have received this e-mail in error, please inform the sender immediately by phone or e-mail and delete this e-mail, including any copies, from your computer system network and destroy any hardcopies.

Unless otherwise stated, this e-mail represents the views of the sender and not the views of the Environmental Protection Agency.

Although this e-mail has been checked for the presence of computer viruses, the Environmental Protection Agency provides no warranty that all viruses have been detected and cleaned. Any use of this e-mail could harm your computer system.  It is your responsibility to ensure that this e-mail does not contain and is not affected by computer viruses, defects or interference by third parties or replication problems (including incompatibility with your computer system).

E-mails sent to and from the Environmental Protection Agency will be electronically stored, managed and may be audited, in accordance with the law and Queensland Government Information Standards (IS31, IS38, IS40, IS41 and IS42) to the extent they are consistent with the law.

___________________________