[OSM-dev] slow osm.org tile server

[Tom Hughes]

On 09/04/2019 19:39, Wolfram Schneider wrote:
> On Mon, 25 Mar 2019 at 18:16, Wolfram Schneider <wosch at freebsd.org> wrote:
>>
>> Hi,
>>
>> I noticed that the standard OSM tile servers
>> (N.tile.openstreetmap.org) are currently slow.
>>
>> On the site
>>
>>    https://mc.bbbike.org/mc/
>>
>> you will see that OSM is the slowest, and takes at least 5 seconds to
>> get all tiles. The other servers responses in less than a second.
>>
>> Downloading a single tile is also always slow:
>>
>> curl https://b.tile.openstreetmap.org/11/1100/671.png >/dev/null
>>    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
>>                                   Dload  Upload   Total   Spent    Left  Speed
>> 100 41017  100 41017    0     0   7658      0  0:00:05  0:00:05 --:--:--  7146
>>
>> it seems that there is a delay of 5 seconds until the tile is fully
>> delivered, and the download rate is at 7Kbyte/s. I tried this from
>> different locations (Bay Area, NYC, Germany) - the result is always
>> the same.
> 
> it was better in the last week, down to 2-3 seconds. But not it is
> slow as hell again and takes more than 6.5 seconds to fetch a single
> tile:
> 
> time curl -sSf https://c.tile.openstreetmap.org/11/1100/671.png >/dev/null
> real 0m6.587s
> user 0m0.017s
> sys 0m0.009s
> 
> you can repeat the request and it is still slow (5+ seconds).
> 
> who is in charge of the HTTPS setup for OSM?

Using curl like that will be slow beause you are being put
in a deliberate slow lane when not coming via the web site.

Tom

> -Wolfram
> 
> 
>> PS: if I do not use HTTPS and instead plain old HTTP, it will take
>> only 0.3 - 0.6 seconds.
>>
>> Any idea whats wrong with the HTTPS setup for the tile servers?
>>
>> -Wolfram
>>
>>
>> --
>> Wolfram Schneider <wosch at FreeBSD.org> https://wolfram.schneider.org
>> Planet.osm extracts: https://extract.bbbike.org
>> BBBike Map Compare: https://mc.bbbike.org/mc
> 
> 
> 


-- 
Tom Hughes (tom at compton.nu)
http://compton.nu/