Thanks Peter. We didn't know this limit is so small. I'm not sure but in
Firefox seems to be of 4 parallel requests, isn't?

2010/9/10 Peter Körner <osm-li...@mazdermind.de>

> Am 10.09.2010 14:42, schrieb DGIS Devels:
>
>  Is the number of tiles requested simultaneously limited in OpenLayers? I
>> would like to know how long I have to wait (timeout) to have a whole map
>> with a high number of tiles.
>>
>
> Most browsers have a hard-coded limit of 2 parallel Requests per Domain to
> avoid flooding servers with requests.
>
> The limit is per Domain, not per IP, which is why you can trick around this
> limit by using multiple domains to point to your tile-server (
> a.tile.myserver.net, b.tile.myserver.net, c.tile.myserver.net).
>
> If is, for example, done on osm.org:
> http://www.openstreetmap.org/openlayers/OpenStreetMap.js
>
> Peter
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