For previous attempts to fix it, please look into https://github.com/openstreetmap/chef/pull/97 - in 2016 delay pools were mindlessly set to unusable limits if your ISP happens to have more than a couple of OpenStreetMap users, and not all the values were raised since then.
On Tue, Apr 16, 2019 at 8:33 AM Wolfram Schneider <[email protected]> wrote: > On Wed, 10 Apr 2019 at 08:56, Tom Hughes <[email protected]> wrote: > > > > On 09/04/2019 19:39, Wolfram Schneider wrote: > > > On Mon, 25 Mar 2019 at 18:16, Wolfram Schneider <[email protected]> > 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. > > I first noticed the slow tile servers while visiting the main web site > https://www.openstreetmap.org using a browser. It didn't matter which > browser I used, Safari, Firefox, Google Chrome etc. This was more than > 4 weeks ago. Changing the user agent does not speedup anything. You > can use an empty user agent, a random user agent ("foobar") or a real > one, same results. If there is a slow lane, then apparently all user > agent are effected. > > Google Chrome reports a page load time of 7 seconds for > https://www.openstreetmap.org which is notable slow and you don't want > use in a presentation or show your mom. If you move the slippymap, it > will takes another 5 seconds. > > In contrast, the OpenCycleMap https://www.opencyclemap.org loads in > less than a second (!). For me, both tile servers > (https://a.tile.openstreetmap.org/ and > https://a.tile.thunderforest.com/cycle) are running at the same data > center at hetzner.com (ping time < 20ms). It is unlikely a provider > issue. > > I run the tests from different locations (US West, US East, Germany, > Finland) and different providers (Yahoo, Alibaba, Hetzner, Vodafone, > Telefonica) - same results. Big providers may have network slowdowns, > but they usually fix this in minutes or hours. > > My gut feeling is that something is wrong with the SSL setup at > tile.openstreetmap.org. Feel free to contact me if you have any > question. > > -Wolfram > > > > > > 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 <[email protected]> https://wolfram.schneider.org > > >> Planet.osm extracts: https://extract.bbbike.org > > >> BBBike Map Compare: https://mc.bbbike.org/mc > > -- > > Tom Hughes ([email protected]) > > http://compton.nu/ > -- > Wolfram Schneider <[email protected]> https://wolfram.schneider.org > > _______________________________________________ > dev mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/dev > -- Darafei Praliaskouski Support me: http://patreon.com/komzpa
_______________________________________________ dev mailing list [email protected] https://lists.openstreetmap.org/listinfo/dev
