Re: [OSM-dev] Faster loading with scabies

2008-10-20 Thread Noel Grandin
Most modern databases have some kind of block-load API for efficiently importing large chunks of data into their tables. It's really only the most simple stuff that __doesn't__ slow down when importing using INSERT. Although it should plateau to a constant time/INSERT pretty quickly. Brett

Re: [OSM-dev] Faster loading with scabies

2008-10-17 Thread Brett Henderson
Sascha Silbe wrote: On Thu, Oct 16, 2008 at 09:21:54AM +1100, Brett Henderson wrote: The biggest problem I found wasn't the actual processing of INSERT statements, it was MySQL scaling non-linearly with the number of rows. MyISAM tables are very fast to import regardless of number of rows,

Re: [OSM-dev] Faster loading with scabies

2008-10-17 Thread Brett Henderson
Joachim Zobel wrote: Am Donnerstag, den 16.10.2008, 09:21 +1100 schrieb Brett Henderson: Do you have any numbers to show what sort of performance increase can be expected. I can load europe.osm into the current_* tables in less than 12 hours (on my laptop - overpowered CPU, 5400

Re: [OSM-dev] Faster loading with scabies

2008-10-16 Thread Joachim Zobel
Am Donnerstag, den 16.10.2008, 09:21 +1100 schrieb Brett Henderson: Do you have any numbers to show what sort of performance increase can be expected. I can load europe.osm into the current_* tables in less than 12 hours (on my laptop - overpowered CPU, 5400 disk). If it's significant I

Re: [OSM-dev] Faster loading with scabies

2008-10-16 Thread Sascha Silbe
On Thu, Oct 16, 2008 at 09:21:54AM +1100, Brett Henderson wrote: The biggest problem I found wasn't the actual processing of INSERT statements, it was MySQL scaling non-linearly with the number of rows. MyISAM tables are very fast to import regardless of number of rows, but InnoDB seems to

Re: [OSM-dev] Faster loading with scabies

2008-10-15 Thread Stefan de Konink
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Joachim Zobel schreef: Hi. I have written a utility named scabies to load data from osm files into a mysql database. See http://www.heute-morgen.de/scabies/ Usage is rather straightforward, but you need lots of disk space.

Re: [OSM-dev] Faster loading with scabies

2008-10-15 Thread Brett Henderson
Hi Joachim, Nice work, any info on how to improve load speed is much appreciated. On Thu, Oct 16, 2008 at 6:15 AM, Joachim Zobel [EMAIL PROTECTED]wrote: Hi. I have written a utility named scabies to load data from osm files into a mysql database. See http://www.heute-morgen.de/scabies/