Carlos E. R. wrote:
When I have dowloads running, using my full internet pipe, which is just 1 mbit/s ADSL via dedicated router, DNS queries fail, meaning that anything internet related fails, in the entire house. It does not matter what machine is doing the download.
(I can do several downloads at the same time, though)
If your line is maxed out, I can see UDP queries failing, but usually the resolver will then switch to TCP, which should work, even if the line is loaded.
Aparently, the router is not capable of prioritizing and doing two things at the same time, like doing a download, and querying upstream DNSs.
The router might be, but there's no guarantee that the rest of your uplink adheres to any QoS indicators.
What would be the best strategy to at least paliate this?
I have had issues with VoIP quality when a link is fully loaded, but I have never had an issue with DNS. I would at least check to see if your resolver does properly witch to TCP if the UDP queries time out.
At this moment, this machine is using bind, with this config:
forwarders { 192.168.1.1; }; forward first;
which means that it asks my router, which in turn asks my ISP. Maybe I should tell my machine to query some other DNS server outside, instead, in case it is just the router which can not do two things, but it may allow packages to go in or out... :-?
It's worth bypassing your router as a test, certainly. If the router is being maxed out, that might be the problem. -- Per Jessen, Zürich (11.6°C) http://www.hostsuisse.com/ - virtual servers, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org