[Geocoding] Nominatim machine spec

[Sarah Hoffmann]

Hi Simon,

what are your requirements performance-wise? How many requests do you
get at the moment?

Sarah

On Fri, Feb 27, 2015 at 03:41:16PM +0000, Simon Nuttall wrote:
> We're trying to spec up a new machine to run CycleStreets and we would
> like to instantiate a worldwide Nominatim service too.
> 
> Our current Nominatim service (which runs in a VM) is now getting
> quite out of date as I stopped updating it when it couldn't keep up
> with the updates and was hogging the disk.
> 
> Our new machine will not be a VM, and I think it will be able to run
> alongside CycleStreets in the same bare metal Ubuntu installation,
> their main common element will be apache2.
> 
> My question relates to how much RAM is used by a world-wide Nominatim
> when it has finished it's initial set up. Does it need to have a big
> permanently allocated RAM image to operate efficiently? If so how big
> is that RAM image?
> 
> Will the updating be a significant drain on the performance of the
> machine overall?
> 
> Is there a big RAM requirement during the initialization phase?
> 
> Although we're considering getting a machine with 128GB RAM for
> CycleStreets an alternative option is to get a separate dedicated
> smaller machine that only has 16GB. Could that do the whole world
> (presumably taking much longer for the initialization phase), but fine
> once it has got through that?
> 
> Simon
> 
> -- 
> Simon Nuttall
> 
> Route Master, CycleStreets.net
> 
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