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Google DNS vs OpenDNS vs ISP DNS - Page 3

post #21 of 51
Quote:
Originally Posted by tompsonn View Post

I've already explained why its possible you can actually get less bandwidth with changing a DNS server but it depends what servers depend on being geographically close to provide better bandwidth.

For example, with my ISP DNS I get Google servers that are closest to me geographically. With some other DNS provider, I get ones that could be halfway across the world and it is much slower.

Whether or not this is actually happening for the OP and its not just some placebo thing well we can't say until he gives us some numbers and servers he is downloading from.

I don't understand your case here...... how would a DNS lookup taking longer lower throughput or non-DNS lookup latency?


Higher latency DNS lookups just mean..... slower DNS lookups? Once the IP has been resolved, why would the DNS server matter?


UNLESS.... you are talking about the geographically remote DNS server is resolving to an IP of a site that is more local to it rather than another IP that might be closer to the user.
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post #22 of 51
Quote:
Originally Posted by DuckieHo View Post

UNLESS.... you are talking about the geographically remote DNS server is resolving to an IP of a site that is more local to it rather than another IP that might be closer to the user.

Uh yes.
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post #23 of 51
But even then, that's still just a latency issue as you're downloading the same content. I don'treally understand why. A further away server would use more or less bandwidth

Sent from phone at 7an so excuse the random formatting. Need caffeine
post #24 of 51
Quote:
Originally Posted by tompsonn View Post

Uh yes.
OK... the confusing part was "I've already explained why its possible"..... but where did you already explain this? If you go to all posts prior, you never did.
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post #25 of 51
Thread Starter 
I just did a quick test on speedtest.net with different DNS providers. When I did the test in speedtest.net, I picked the closest server in my area which is the one in Hudson, NY.

ISP DNS
DL: ~37 Mbps - UP: ~21Mbps - Ping 28ms

Google DNS
DL: ~14 Mbps - UP: ~17Mbps - Ping 34ms

OpenDNS
DL: ~13 Mbps - UP: ~16Mbps - Ping 33ms
post #26 of 51
Quote:
Originally Posted by Capt View Post

I just did a quick test on speedtest.net with different DNS providers. When I did the test in speedtest.net, I picked the closest server in my area which is the one in Hudson, NY.

ISP DNS
DL: ~37 Mbps - UP: ~21Mbps - Ping 28ms

Google DNS
DL: ~14 Mbps - UP: ~17Mbps - Ping 34ms

OpenDNS
DL: ~13 Mbps - UP: ~16Mbps - Ping 33ms

DNS wouldn't even affect speedtest.net.

I suggest you try doing several speed tests per DNS provider; you'll find they all work out the same.
post #27 of 51
I have tried my verizon DNS, Google DNS and Open DNS. Google had their DNS hijacked recently, a simple "google dns hijacked" as a search will show you what I mean. I saw that happen and went back to open DNS for now and have had no issues. Also OpenDNS has most of their servers right down the street from me lol. I've done some DNS benches and Open DNS shows as the fastest but it really doesn't make much of a difference, it's just name resolving.
     
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post #28 of 51
THIS is why I no longer use Google's DNS.

OpenDNS all the way.
    
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post #29 of 51
Quote:
Originally Posted by killabytes View Post

THIS is why I no longer use Google's DNS.

OpenDNS all the way.

With DNS lookups, I know that most implementation will attempt primary and then secondary if no response.


Is there a way to do any casting instead? Request the lookup from OpenDNS, GoogleDNS, IP DNS, etc simultaneously and just use the first to respond?
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post #30 of 51
Quote:
Originally Posted by DuckieHo View Post

With DNS lookups, I know that most implementation will attempt primary and then secondary if no response.


Is there a way to do any casting instead? Request the lookup from OpenDNS, GoogleDNS, IP DNS, etc simultaneously and just use the first to respond?

Not really no. You could easily write an proxy name server to do this, though you'd obviously be adding latency in doing so which might mitigate the benefits of parallel queries - depending on where the proxy sat (ie localhost? server inside the LAN?)

Or if you're feeling brave, you could rewrite the OS DNS resolver (in fact it might be pretty trivial to do this in Linux since you can pick and choose which stacks to use to resolve domain names and the order in which to use them.
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