On Tue, Apr 30, 2013 at 05:15:42PM +0100, Simon Nuttall wrote: > On 29 April 2013 23:42, Simon Nuttall <[email protected]> wrote: > > On 29 April 2013 23:34, Sarah Hoffmann <[email protected]> wrote: > >> On Mon, Apr 29, 2013 at 10:20:55PM +0100, Simon Nuttall wrote: > >>> On 29 April 2013 08:30, Sarah Hoffmann <[email protected]> wrote: > > 8< > > >>> Does it make a lot of difference? Would 32GB be enough to process the > >>> whole planet or should I just stick to Europe? > >> > >> 32GB should be ok for a planet. The more limiting factor is I/O. > >> If you could add an SSD to the machine that would give you a huge > >> performance boost, especially when running minutely updates in the > >> background. > > > > Noted, thanks. > > OK, we are now considering an SSD. > > What size would you recommend?
We use 2x256GB SSDs in a RAID0. That is enough to comfortably hold all important tables and indices and leave a bit of room for growth. Beyond that I have done very little testing. It might be sufficient to have only a single 256GB disk, which hold the indices and tables on SSD that are needed for searching (placex, place_addressline, search_name and word). > Also, we have the option of cheap SSD that wears out quickly or more > expensive enterprise quality which lasts about 10x longer. What would > you choose? My knowledge on the hardware side is rather limited. Just take into account that Nominatim is doing quite a bit of writing when in minutely update mode and that you will need to start from scratch if the data on the SSD is lost. Sarah _______________________________________________ Geocoding mailing list [email protected] http://lists.openstreetmap.org/listinfo/geocoding
