[OSM-talk] Why is JOSM upload so slow?

[Keith Ng]

I see. Thanks for the information.

When will the 0.6 API be ready and in use then?

Regards,
Keith

On Sat, Nov 15, 2008 at 8:31 PM, Martijn van Oosterhout
<kleptog at gmail.com>wrote:

> On Sat, Nov 15, 2008 at 9:49 AM, Keith Ng <khensthoth at gmail.com> wrote:
> > I am currently uploading fixed coastline from JOSM and I notice that the
> > upload is excruciatingly slow. The maximum speech achievable is around
> > 1.5KB/s and the average speed is around 800 byles/s.
> >
> > I am uploading data from Melbourne, Australia. There's nothing wrong with
> my
> > Internet. My maximum upload bandwidth is 256KB/s. Yet, JOSM notifies me
> that
> > my current upload will take around 95 minutes.
>
> The problem is not speed, it's latency. I'm not sure what your ping
> time is to the server (I'm guessing near 350ms), but remember that any
> single update done by JOSM will take at least a whole HTTP request to
> do which is at least 4*RTT so maybe 1.5 seconds. Multiply by number of
> objects...
>
> The 0.6 API wil have a bulk upload stream which can significantly
> reduce the overhead. Another possibility is do a Save in JOSM and you
> bulk_upload from a machine closer to the server.
>
> Have a nice day,
> --
> Martijn van Oosterhout <kleptog at gmail.com> http://svana.org/kleptog/
>
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