[OSM-talk] Why isn't any XAPI server available ?

Graham Jones grahamjones139 at gmail.com
Fri Feb 18 19:29:25 GMT 2011


Are the hardware requirements really so modest?

A few weeks ago I tried experimenting by importing just Europe and it took a
week (on my machine which has 2GB memory), so I gave up on the idea of
having my own whole planet database.
Then I had major trouble with the database size growing, and never really
got the 'trimming extra nodes outside of the bounding box' trick working -
that seemed to take so long that I gave up on it.  Maybe you need to do that
after each import, rather than prune it once a week....

If people are managing to maintain their own database on modest hardware, I
would be interested to know what hardware and software configuration they
use, because I am thinking of investing in a virtual server to do it, but
want to go for minumum specification to save on the cost.

Graham.

On 18 February 2011 18:27, 80n <80n80n at gmail.com> wrote:

> On Fri, Feb 18, 2011 at 5:47 PM, MP <singularita at gmail.com> wrote:
>
>>  More XAPI servers running on good hardware is the only realistic
>>> solution.
>>>
>>
>> Well, there could perhaps be another solution, like running your own XAPI
>> server - the minutely diffs are usually less than 100Kb, so the required
>> bandwidth to download from planet.openstreetmap.org would be less than 2
>> Kb/second in average.
>>
>> But the question is - how large would be the planet database on disk (how
>> large would it get once you import the planet dump)
>>
>> I guess the database would be in order of tens of gigabytes, probably over
>> 100 GB ...
>>
>
> About 350GB
>
>
>
>>
>> And how much memory you need on the machine to run some reasonable queries
>> (if 4 GiB works for main XAPI server, would it be usable on machine with
>> only 1 GiB of memory?)
>>
>
> Yes
>
>
>>
>> Martin
>>
>>
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>>
>
>
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-- 
Graham Jones
Hartlepool, UK.
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