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Apple TV, iTunes downloads slowed by Google DNS

post #1 of 91
Thread Starter 
Users experiencing slow movie rental downloads via Apple TV or iTunes should make sure they're not using a centralized domain name service such as Google DNS, which can dramatically slow down media access to Content Delivery Networks.

A variety of Apple TV users have reported extremely long download times when trying to rent movies. The problem does not appear to be with Apple's servers, the Akamai Content Delivery Network Apple uses to deliver media downloads efficiently, nor the design of iTunes or Apple TV hardware. Instead, it's often cause by a centralized Domain Name Service, such as Google DNS or OpenDNS, according to a variety of reports.

Last December, Google launched Google DNS as a free service intended to give users an alternative to their Internet Service Provider's own DNS servers. At the time, the company touted faster performance and security in using its own DNS, which enables client computers to look up IP addresses of Internet servers from their easier to remember domain name.

While Google DNS (and similar services, such as UltraDNS and OpenDNS) may enable users to bypass domain blocking rules and redirects configured by their ISP or their company's IT department, and can also speed network performance in some cases by resolving IP addresses faster, the centralized DNS services can also defeat the distributed nature of DNS itself.

Network users are supposed to look up IP addresses from a nearby server, which itself queries and caches answers to name and address lookups from other DNS systems, distributing the workload across the network. CDNs like Akamai, which Apple works with to deliver iTunes downloads, use DNS lookup information to locate where users are, and then optimize content delivery via the nearest available server.

When millions of users all tap into the same DNS server addresses to resolve domain names, as Google DNS does by design, Akamai and other CDNs route content to those users along the same path, preventing the network from working optimally. This causes problems not only for Apple's iTunes, but also any other media streaming or download service that uses a similar CDN strategy to distribute downloads.

May cost foreign users extra

In addition, according to a report by APC, some foreign providers that have dedicated media links to enable efficient, cost effective delivery are bypassed when users configure their systems to use a service like Google DNS, bypassing the user's quota for free downloads.

This can result in extra costs for the user, as their otherwise-free media downloads are billed directly because they don't take advantage of local delivery links and instead pull data directly from American servers.

Reverting to local DNS services

Google provides instructions on how to configure its own Google DNS services, which can be used to revert back to the original DNS settings. In many cases, users obtain automatic DNS server assignments from their ISP in the same DHCP process that provides them with their IP addresses.

Users with wireless base stations or any devices with statically configured network settings (such as an Apple TV) may need to verify that their network devices are all using the local DNS addresses from their ISP, rather than Google DNS, if slow media downloads are a problem.

Update

Laura Oppenheimer of OpenDNS wrote AppleInsider to provide additional information on how third-party DNS services might affect devices like Apple TV.

"OpenDNS has arrangements with a number of CDNs that make this a non-issue for the vast majority of OpenDNS + Apple TV users," Oppenheimer wrote. "That said, with Akamai, especially internationally, it's still suboptimal. It's entirely workable, but not as optimal as it could be.

"In general, North America isn't really an issue since we have a sufficiently dense network topology. That said, we're very open to working to improve end-user CDN routing with Akamai, just as we have with other large CDNs."
post #2 of 91
4.2.2.2
4.2.2.1

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post #3 of 91
"Do no evil", my arse!

   Apple develops an improved programming language.  Google copied Java.  Everything you need to know, right there.

 

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post #4 of 91
Quote:
Originally Posted by AppleInsider View Post

... Last December, Google launched Google DNS as a free service intended to give Google the means to track every single server you access on the internet, even when other tracking methods fail to be effective...

There, I fixed it for you.
post #5 of 91
wow, definitely experienced this problem with slowwww rentals and Google DNS. I've switched to my ISP DNS now, thanks for the article.
post #6 of 91
Quote:
Originally Posted by John.B View Post

4.2.2.2
4.2.2.1

Use these and then it will assume you're in Broomfield Colorado connected directly to Level3. Which would be fun if you were... be great for netflix viewers i suppose.
post #7 of 91
No, that's not how DNS works. Your machine does an initial lookup for the address record and then your machine caches it for some period of time. Once your machine is downloading it has already connected and wouldn't need another lookup. JoeMaller doesn't post the source of his research and DED links to faulty research.

I haven't had any problems with Google DNS. I'm rather fond of Open DNS myself.
post #8 of 91
There is so much misinformation in this article it makes me angry. Link baiting is one thing, but this is flat out making stories up.

A variety of reports? One guy... ONE GUY... mentions in a blog that he changed his DNS and magically his precious Apple TV was working again. I appreciate the explanation of how DNS can be used to locate you, which I never knew before, but this anecdotal evidence reported by a random blogger being treated as fact is upsetting to say the least. And of course, the fact that he coincidentally used Google's DNS is the only reason this story even exists. Had he been using OpenDNS or Level 3 DNS, there wouldn't be any drama cooked up in the non-existent Google vs Apple wars...

Please, this is tripe and nothing more. The bias never ends. FYI, I personally feel its irresponsible to tell people to switch back to their local providers DNS, which may end up being *SLOWER* than OpenDNS or Google can provide, and may be more susceptible to DNS spoofing and phishing attacks due to ISPs not updating their servers regularly, which puts users at risk of attack.
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post #9 of 91
Quote:
Originally Posted by yuusharo View Post

There is so much misinformation in this article it makes me angry. Link baiting is one thing, but this is flat out making stories up.

A variety of reports? One guy... ONE GUY... mentions in a blog that he changed his DNS and magically his precious Apple TV was working again. I appreciate the explanation of how DNS can be used to locate you, which I never knew before, but this anecdotal evidence reported by a random blogger being treated as fact is upsetting to say the least. And of course, the fact that he coincidentally used Google's DNS is the only reason this story even exists. Had he been using OpenDNS or Level 3 DNS, there wouldn't be any drama cooked up in the non-existent Google vs Apple wars...

Please, this is tripe and nothing more. The bias never ends. FYI, I personally feel its irresponsible to tell people to switch back to their local providers DNS, which may end up being *SLOWER* than OpenDNS or Google can provide, and may be more susceptible to DNS spoofing and phishing attacks due to ISPs not updating their servers regularly, which puts users at risk of attack.

Um, the blog links to a half dozen threads in Apple Support forums where a whole bunch of people are reporting the same problem/solution.

I have Comcast, they update their servers regularly in my area, and I rarely have DNS issues.
post #10 of 91
Quote:
Originally Posted by AppleInsider View Post

Network users are supposed to look up IP addresses from a nearby server, which itself queries and caches answers to name and address lookups from other DNS systems, distributing the workload across the network. CDNs like Akamai, which Apple works with to deliver iTunes downloads, use DNS lookup information to locate where users are, and then optimize content delivery via the nearest available server.

akamai knows my ip address, but they sure as hell don't know from which dns server i got theirs.

Quote:
Originally Posted by yuusharo View Post

There is so much misinformation in this article it makes me angry. Link baiting is one thing, but this is flat out making stories up.

hear, hear!
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post #11 of 91
Quote:
Originally Posted by ddawson100 View Post

No, that's not how DNS works. Your machine does an initial lookup for the address record and then your machine caches it for some period of time. Once your machine is downloading it has already connected and wouldn't need another lookup. JoeMaller doesn't post the source of his research and DED links to faulty research.

I haven't had any problems with Google DNS. I'm rather fond of Open DNS myself.

Bingo. I was of puzzled why the headline specifically singles out google and only google when at best it generally affects users of external DNS servers. At best. Was it just a chance to put google in the headline to grab some eyeballs? Sort of like taking a story about some laptop batteries, like apple might use, exploding and putting out a headline "Apple laptops exploding!" WTF?

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post #12 of 91
I won't go as far to say that this is rubbish, but I have never had an issue with Google's DNS and my AppleTV (original recipe). In fact, everything downloads and streams (YouTube, etc.) much better than my crappy ISP.
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post #13 of 91
Quote:
Originally Posted by anonymouse View Post

Quote:
Originally Posted by AppleInsider View Post

... Last December, Google launched Google DNS as a free service intended to give Google the means to track every single server you access on the internet, even when other tracking methods fail to be effective...

There, I fixed it for you.

That would be funny if it wasn't so true...

Quote:
Originally Posted by revilre View Post

Use these and then it will assume you're in Broomfield Colorado connected directly to Level3. Which would be fun if you were... be great for netflix viewers i suppose.

Many medium and large ISPs leverage those same DNS services of L3. That's how DNS works. Besides, it happens to be load balanced to the hilt.

The advantage of using it is that it's not borked up with a bunch of domain search redirects, which is what my ISP is doing with their end-user DNS services (and probably yours as well).

   Apple develops an improved programming language.  Google copied Java.  Everything you need to know, right there.

 

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   Apple develops an improved programming language.  Google copied Java.  Everything you need to know, right there.

 

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post #14 of 91
Quote:
Originally Posted by yuusharo View Post

There is so much misinformation in this article it makes me angry. Link baiting is one thing, but this is flat out making stories up.

A variety of reports? One guy... ONE GUY... mentions in a blog that he changed his DNS and magically his precious Apple TV was working again. I appreciate the explanation of how DNS can be used to locate you, which I never knew before, but this anecdotal evidence reported by a random blogger being treated as fact is upsetting to say the least. And of course, the fact that he coincidentally used Google's DNS is the only reason this story even exists. Had he been using OpenDNS or Level 3 DNS, there wouldn't be any drama cooked up in the non-existent Google vs Apple wars...

Please, this is tripe and nothing more. The bias never ends. FYI, I personally feel its irresponsible to tell people to switch back to their local providers DNS, which may end up being *SLOWER* than OpenDNS or Google can provide, and may be more susceptible to DNS spoofing and phishing attacks due to ISPs not updating their servers regularly, which puts users at risk of attack.

Google Clubs Baby Seals... Story at 11

The level that AI sinks to sometimes to criticize Google at every turn is a bit sickening at times.
post #15 of 91
Quote:
Originally Posted by Tulkas View Post

Bingo. I was of puzzled why the headline specifically singles out google and only google when at best it generally affects users of external DNS servers. At best. Was it just a chance to put google in the headline to grab some eyeballs? Sort of like taking a story about some laptop batteries, like apple might use, exploding and putting out a headline "Apple laptops exploding!" WTF?

Your kidding right, why does basically an Apple fan site specifical mention a problem with Google?


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post #16 of 91
As many have already said, this article is misinformed on many levels, and shows that the author doesn't really understand DNS at all.

1. DNS is simply a directory for matching human-readable names (i.e. apple.com, cnn.com, yahoo.com) with an IP address that computers understand. It doesn't have ANYTHING with setting routes (or "paths", as the author states) to/from your computer and the site!

2. the point of third-party DNS services, like Google or OpenDNS, is to speed up your surfing-- these servers are typically dramatically faster-responding than your usual ISP. Switch, and you'll see the difference.

3. Once your computer has connected to a site to download, stream, etc., DNS has no role in that process. A DNS server WILL NOT affect your download speed!

4. it is trivial for a company to block users from setting their own DNS-- simply block port 53 on the firewall (except for your main DNS server, of course). Any user setting their own DNS to anything other than the corporate DNS will be surprised to find they can no longer surf the web.
post #17 of 91
Quote:
Originally Posted by Mazda 3s View Post

Google Clubs Baby Seals... Story at 11

The level that AI sinks to sometimes to criticize Google at every turn is a bit sickening at times.

And yet, you're still here...

   Apple develops an improved programming language.  Google copied Java.  Everything you need to know, right there.

 

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Reply

   Apple develops an improved programming language.  Google copied Java.  Everything you need to know, right there.

 

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post #18 of 91
Quote:
Originally Posted by Mazda 3s View Post

Google Clubs Baby Seals... Story at 11

......




sorry saw this and had this image - visually imagine Eric Schmidt with ol' Sarah P with clubs in their hands saying. 'Y'know, some times we have to do un-pleasant things for the better good... CRaccckkk'.

Sorry everyone, just being stupid and silly.
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post #19 of 91
Quote:
Originally Posted by boeyc15 View Post

Your kidding right, why does basically an Apple fan site specifical mention a problem with Google?


Captain Renault: I'm shocked, shocked to find that gambling is going on in here!

Ugh, yeah. Unless AI has become as ignorant as others that must see google as bad because the compete with Apple. I hoped that level of stupidity left with the desktop wars. Guess some people wallow in the negativity of it. Enjoy.

Being Apple fan doesn't mean hating everyone else. Almost seems like Gruber is ghost writing for AI today (kidding, they aren't that bad yet).

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post #20 of 91
Those Google F$%^%ers !!!!
post #21 of 91
Who in his/her right mind sign up with Google DNS?? I mean this company stores all your searches, pry in your emails, and if you sign up would know all your info..

"Apple people have no objectivity when it comes to criticism of Apple.." Lenovo X1 Carbon is out..bye bye MBAir

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post #22 of 91
Quote:
Originally Posted by daylove22 View Post

Who in his/her right mind sign up with Google DNS?? I mean this company stores all your searches, pry in your emails, and if you sign up would know all your info..

Hm, funny, iTunes knows my name, address, phone number, credit card, every purchase I've ever made from the store, and has the ability to track down my phone to within several meters of accuracy. Seems pretty invasive to me .

Kidding aside, your ISP knows more about you than Google does. They can track every single website you go to. Google can only limit to searches. Point being, if you use the internet, you have a fingerprint with somebody. Just because Google is big doesn't mean they're evil, or that they're the only threat on the net.


Quote:
Originally Posted by Tulkas View Post

Ugh, yeah. Unless AI has become as ignorant as others that must see google as bad because the compete with Apple. I hoped that level of stupidity left with the desktop wars. Guess some people wallow in the negativity of it. Enjoy.

Being Apple fan doesn't mean hating everyone else. Almost seems like Gruber is ghost writing for AI today (kidding, they aren't that bad yet).

Not sure what's in the air today, but TUAW is doing the same thing. There were several articles posted today taking jabs at Windows Phone, Motorola, Android... pretty much anyone who is not Apple. If Gruber ain't writing for AI, he may be over at the AOL offices .
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post #23 of 91
Quote:
Originally Posted by yuusharo View Post


Not sure what's in the air today, but TUAW is doing the same thing. There were several articles posted today taking jabs at Windows Phone, Motorola, Android... pretty much anyone who is not Apple. If Gruber ain't writing for AI, he may be over at the AOL offices .

I think it's because of the lunar eclipse
post #24 of 91
Quote:
Originally Posted by Pooch View Post

akamai knows my ip address, but they sure as hell don't know from which dns server i got theirs.

One way of load balancing around the world is to resolve DNS differently depending on where the user comes from.

So, a user in the UK looks up example.com and gets one IP address, while a user in Australia looks up example.com and gets a different address. I get their servers in Europe, s/he gets them in Oz.

So, it's possible to see how Google DNS can break this - if they return the same address to everyone.

But the article is as badly written as most of the replies, so it's difficult to be sure what's happening here.
post #25 of 91
Quote:
Originally Posted by _Rick_V_ View Post

As many have already said, this article is misinformed on many levels, and shows that the author doesn't really understand DNS at all.

1. DNS is simply a directory for matching human-readable names (i.e. apple.com, cnn.com, yahoo.com) with an IP address that computers understand. It doesn't have ANYTHING with setting routes (or "paths", as the author states) to/from your computer and the site!

2. the point of third-party DNS services, like Google or OpenDNS, is to speed up your surfing-- these servers are typically dramatically faster-responding than your usual ISP. Switch, and you'll see the difference.

3. Once your computer has connected to a site to download, stream, etc., DNS has no role in that process. A DNS server WILL NOT affect your download speed!

4. it is trivial for a company to block users from setting their own DNS-- simply block port 53 on the firewall (except for your main DNS server, of course). Any user setting their own DNS to anything other than the corporate DNS will be surprised to find they can no longer surf the web.

You're missing the point. Your configured DNS server has to talk to the DNS server that authoritatively resolves the hostname in question. In this specific case (AppleTV user configured for Google DNS), the AppleTV queries Google DNS for the iTunes server's IP, which is handled by Akamai; so Google DNS talks to Akamai DNS to get the authoritative record, and returns that to the AppleTV. Further, Google is permitted to cache that record from Akamai for a specific period of time (as determined by Akamai), and serve the cached record to other users. CDN's usually permit a TTL of 1 to 30 minutes. The kicker is that CDN's like Akamai often have streaming servers all over the world, and use custom DNS implementations that can do cool tricks like a geolocation against the IP address of the peering DNS server, in order to return an IP address to you that points your streaming request to a datacenter that's geographically near you. This is very important in the world of video streaming because it reduces roundtrip latency. The CDN assumes that your requesting DNS server is from your ISP and therefore likely regionally located near you, so these CDNs' tricks result in your being returned an IP address that attempts to ensure roundtrip latency is minimal. The problem that is noticed arises because Google's DNS servers are probably not geographically located near you, and with everyone around the world using them, as opposed to just regional users, a side effect is created whereby Google caches and serves you IP addresses that likely point you to an Akamai datacenter that is located far away (significantly increasing latency), and also likely overburdened because of other Google DNS users receiving the same cached DNS record. Other posters are right, though, this is not specifically a Google problem, it's also a problem with OpenDNS and other commonly used alternatives to your ISP's DNS server. In our high-bandwidth world where geolocation is key, when you give up your ISP's regional DNS for an external server that may be far away, you're going to see this issue.
post #26 of 91
Quote:
Originally Posted by Pooch View Post

akamai knows my ip address, but they sure as hell don't know from which dns server i got theirs.

Yeah, they do.

Assuming Google's DNS works like other DNS systems, Google (and your ISP) does not maintain a table of every DNS entry around the world but they do have a hints table to help them find the right address (and a cache of previous requests). If you request www.google.com, your computer asks your DNS servers for the address. Those servers, after consulting the cache, query the root servers. These servers will return "I don't know the address for these server, ask someone from this list and returns the list of servers authoritative for the .COM TLD (you can see this by using the command nslookup -q=any www.google.com a.root-servers.net). Your DNS server will then check with those servers (nslookup -q=any www.google.com a.gtld-servers.net). The servers will tell your DNS server who owns the google.com domain. Then your DNS server will query those name servers nslookup -q=any www.google.com ns1.google.com), which yields an answer. Your DNS server will cache this result and then return it to you.

Now, if Akamai's DNS servers are returning answers based on the geography of the DNS server querying it, users far from Google's DNS servers will get Akamai servers far from them which would explain why switching to your ISP's DNS servers would improve performance.
post #27 of 91
Quote:
Originally Posted by yuusharo View Post

There is so much misinformation in this article it makes me angry. Link baiting is one thing, but this is flat out making stories up.

Here's a direct quote made by Google's CEO, Eric Schmidt:

Quote:
"If you have something that you don't want anyone to know, maybe you shouldn't be doing it in the first place, but if you really need that kind of privacy, the reality is that search engines including Google do retain this information for some time, and it's important, for example that we are all subject in the United States to the Patriot Act. It is possible that that information could be made available to the authorities."

Big Brother is watching all of us. And Little Brother Google is helping him.

So do you want Google to know what you search for (Google Search), what documents you're working on online (Google Documents), what you buy and where you buy it (Google Checkout), your address and phone numbers and the addresses and phone numbers of everyone you know (Google Address Book), and every single web site you visit (GoogleDNS)? Really? Now exactly why would you want one single company to know all that?

Does *that* make you angry, yuu? Or are you just angry that someone is picking on poor helpless lil' ole Google.

Here's an article you should read: Google's Schmidt Roasted for Privacy Comments

And another one, by Old Man Grumpus himself: Eric Schmidt, Google and privacy

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post #28 of 91
Quote:
Originally Posted by SockRolid View Post

Here's a direct quote made by Google's CEO, Eric Schmidt:



Big Brother is watching all of us. And Little Brother Google is helping him.

So do you want Google to know what you search for (Google Search), what documents you're working on online (Google Documents), what you buy and where you buy it (Google Checkout), your address and phone numbers and the addresses and phone numbers of everyone you know (Google Address Book), and every single web site you visit (GoogleDNS)? Really? Now exactly why would you want one single company to know all that?

Does *that* make you angry, yuu? Or are you just angry that someone is picking on poor helpless lil' ole Google.

Here's an article you should read: Google's Schmidt Roasted for Privacy Comments

And another one, by Old Man Grumpus himself: Eric Schmidt, Google and privacy

What does anything that you wrote (privacy) have to do with what the user you quoted said or what the article is about (DNS performance issues)?

Not a damn thing.
post #29 of 91
Yeah ddawson said it simply.

DNS has nothing to do with the speed at which data is flowing through the pipe.

DNS as a reason for slow Apple TV downloads (or any other data downloads) doesn't make sense.
post #30 of 91
Quote:
Originally Posted by SockRolid View Post

Big Brother is watching all of us. And Little Brother Google is helping him.

So do you want Google to know what you search for (Google Search), what documents you're working on online (Google Documents), what you buy and where you buy it (Google Checkout), your address and phone numbers and the addresses and phone numbers of everyone you know (Google Address Book), and every single web site you visit (GoogleDNS)? Really? Now exactly why would you want one single company to know all that?

Does *that* make you angry, yuu? Or are you just angry that someone is picking on poor helpless lil' ole Google.

Here's an article you should read: Google's Schmidt Roasted for Privacy Comments

And another one, by Old Man Grumpus himself: Eric Schmidt, Google and privacy

If I use Google to do my searching, Google knows what I'm searching. If I use Bing or Yahoo for searching, then Bing or Yahoo knows what I'm searching. Where the evil privacy concerns are or how one is more evil than the other escapes me.

Microsoft and Facebook knows the documents I use on Docs.com. Amazon, Paypal and my bank all know what I buy and when I buy it. Apple, Microsoft and Yahoo can all know my contact's addresses and phone numbers, as well as Verizon Wireless. Lastly, my ISP knows far more what websites because they actually serve the bits and can read any non-encrypted traffic... the worst DNS can know is what URLs I've been to, but not any content on the webpage itself.

So again, I fail to recognize why I should be angry? Privacy concerns about Google are no different than any other online service I use frequently, and are shared by every users of those networks. I'm sure you've left behind a digital trail of your information somewhere on the net, and even if you were very careful not to, why be more angry at Google than anyone else?

By the way, Schmit's right! Everyone deserves privacy, but don't go posting information about yourself that you wouldn't want the world to know without verifying who you're giving it to and to what end they'll store or share that information.


EDIT: Also, wanted to add that the reason Google is compliant with the Patriot Act and "Big Brother," as you put it, is because its the law. *EVERY* corporation that does business in the US that collects information is required to comply with the Patriot Act. Google isn't 'helping' any more than simply obeying the law. If you have a problem with Google, Microsoft, Apple, or any other corporation giving information to the government, take it up with your Congressman.
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post #31 of 91
When will we get a decent search engine not based in the US and subject to its laws, with a policy of not storing any search data? If such a thing exists then I am ignorant of it.
post #32 of 91
Quote:
Originally Posted by ddawson100 View Post

No, that's not how DNS works. Your machine does an initial lookup for the address record and then your machine caches it for some period of time. Once your machine is downloading it has already connected and wouldn't need another lookup. JoeMaller doesn't post the source of his research and DED links to faulty research.

I haven't had any problems with Google DNS. I'm rather fond of Open DNS myself.



You, sir, are absolutely correct. I find it amazing that I've seen this posted on a lot of "techie" websites, you would think that a WEBSITE would know how DNS works.

The only reason adding Google DNS to your list of servers would speed up web browsing is it helps your computer find all the links to all the Ads posted on the webpages, so your page finishes drawing faster.
post #33 of 91
A balanced and rational analysis of the issue, @ranson.

In short, Your Mileage May Vary [YMMV] with regard to latency depending on the location of your DNS provider servers (ISP/OpenDNS/Google DNS) vis-a-vis the nearest Akamai server that streams your rental selection to you. Any of these DNS solutions could work out best for you or the absolute worst. As such, a little tweaking may or may not be required.

It's pretty obvious from the anecdotal evidence from the various blogs and support trails reporting the issue that the above is the likeliest explanation, and to be fair the AI article here states this clearly enough, if you make sure you are not swayed by the article's title.

What may worry many folks though is Google's past behaviour which has been nothing short of treacherous - one minute all cosy and partner-like with Apple, the next diving headlong with graceless haste into every market their erstwhile partner partakes in - smartphone handset, smartphone OS, App Store, Music Download Store, Book Store, TV streaming hardware, notebooks, and goodness knows whatever next. Couple that with the Street View / Open Wi-Fi passwords issue and some downright random utterances in response by their CEO ("You can always move house", "people want us to tell them what they should be doing" etc) and a smidgeon of paranoia is quite justified.

Linkbait or no, a lot of knowledgeable and suspicious folks are going to be watching issues like this like hawks for any dubious algorithmic activity. Once bitten, twice vigilant.
post #34 of 91
Quote:
Originally Posted by bedouin View Post

When will we get a decent search engine not based in the US and subject to its laws, with a policy of not storing any search data? If such a thing exists then I am ignorant of it.

Sounds like you are ignorant to a lot. If you think there is a search engine that doesn't store results you are living in a fantasy land. That information is priceless for many reasons. Who would you prefer to trust with that data? Russia, China, England? You can't even walk/drive down the street without being on multiple traffic cameras.
Just say no to MacMall.  They don't honor their promotions and won't respond to customer inquiries.  There are better retailers out there.
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Just say no to MacMall.  They don't honor their promotions and won't respond to customer inquiries.  There are better retailers out there.
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post #35 of 91
Quote:
Originally Posted by ranson View Post

You're missing the point. Your configured DNS server has to talk to the DNS server that authoritatively resolves the hostname in question. In this specific case (AppleTV user configured for Google DNS), the AppleTV queries Google DNS for the iTunes server's IP, which is handled by Akamai; so Google DNS talks to Akamai DNS to get the authoritative record, and returns that to the AppleTV. Further, Google is permitted to cache that record from Akamai for a specific period of time (as determined by Akamai), and serve the cached record to other users. CDN's usually permit a TTL of 1 to 30 minutes. The kicker is that CDN's like Akamai often have streaming servers all over the world, and use custom DNS implementations that can do cool tricks like a geolocation against the IP address of the peering DNS server, in order to return an IP address to you that points your streaming request to a datacenter that's geographically near you. This is very important in the world of video streaming because it reduces roundtrip latency. The CDN assumes that your requesting DNS server is from your ISP and therefore likely regionally located near you, so these CDNs' tricks result in your being returned an IP address that attempts to ensure roundtrip latency is minimal. The problem that is noticed arises because Google's DNS servers are probably not geographically located near you, and with everyone around the world using them, as opposed to just regional users, a side effect is created whereby Google caches and serves you IP addresses that likely point you to an Akamai datacenter that is located far away (significantly increasing latency), and also likely overburdened because of other Google DNS users receiving the same cached DNS record. Other posters are right, though, this is not specifically a Google problem, it's also a problem with OpenDNS and other commonly used alternatives to your ISP's DNS server. In our high-bandwidth world where geolocation is key, when you give up your ISP's regional DNS for an external server that may be far away, you're going to see this issue.

Sorry, that still doesn't pass the smell test.

The CDN simply cannot assume that your DNS server is geographically located near you. If your ISP is a large provider like Comcast, Verizon, AT&T, BellSouth, etc., you're really in the same situation as if you use Google or OpenDNS.

Instead, CDN's will look up your location based on your IP address (and other magic). Just as a quick example, try looking up your location by googling "IP address location" (hint, try http://www.ipaddresslocation.org). If you don't know what you're public IP address is, look it up on http://www.whatismyip.com.

Some people are definitely experiencing AppleTV streaming issues (my dad is, while I am not. We both have AT&T Uverse, and the same data plan. Both use the same default wireless router config).
post #36 of 91
Quote:
Originally Posted by anonymouse View Post

There, I fixed it for you.

From the Google Public DNS Privacy Policy:

Is any of the information collected stored with my Google account?
No.

Does Google share the information it collects from the Google Public DNS service with anyone else?
No.

Is information about my queries to Google Public DNS shared with other Google properties, such as Search, Gmail, ads networks, etc.?
No.

.....

Pretty simple policy. But please feel free to continue wearing the tin hat so that Google's orbital mind control laser doesn't affect you.
post #37 of 91
For those of you saying that's not how DNS works - Daniel isn't refering to how DNS works... he refering to how Akmai uses DNS look up information, so they can determine which server to send the streaming content from:

FTA: "CDNs like Akamai, which Apple works with to deliver iTunes downloads, use DNS lookup information to locate where users are, and then optimize content delivery via the nearest available server."

When you use a central DNS, Vs one near your home, Akmai ends up using a server to deliver to you that is less than ideal, sometimes by thousands of miles.

Further more... he wrote DNS service like Google and Open DNS and the other one... Not JUST Google... he's not singling them out or stearing away from others... he specifically wrote central DNS servers, as opposed to your local one. And he does say that the Google like ones can speed up your service-- just not if your heavy content is poorly routed. Re-read the article and drop your overly defensiveness to see what he ACTUALLY wrote.
2011 13" 2.3 MBP, 2006 15" 2.16 MBP, iPhone 4, iPod Shuffle, AEBS, AppleTV2 with XBMC.
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2011 13" 2.3 MBP, 2006 15" 2.16 MBP, iPhone 4, iPod Shuffle, AEBS, AppleTV2 with XBMC.
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post #38 of 91
2011 13" 2.3 MBP, 2006 15" 2.16 MBP, iPhone 4, iPod Shuffle, AEBS, AppleTV2 with XBMC.
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2011 13" 2.3 MBP, 2006 15" 2.16 MBP, iPhone 4, iPod Shuffle, AEBS, AppleTV2 with XBMC.
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post #39 of 91
Here in Asia, overall I have found Akamai to be quite excellent in serving all sorts of Apple-cloud-related content. In fact, stuff from Apple is some of the fastest content I can get *because* of Akamai. It is really pretty impressive - Software Updates, MobileMe (don't laugh), iTunes Store, App Store, etc. for both US iTunes Store and local iTunes Stores. The only dog is iDisk which is more or less unusable. MobileMe mail used to be troublesome at times but improved a lot this past year, either on the Apple side or my local ISPs' side.

I like OpenDNS because for most other sites it resolves everything quite fast nowadays compared to my developing-country ISPs.

But, in light of all this I'm going to stop using OpenDNS because of the amount of interaction I have with Apple cloud stuff. I think I was only using OpenDNS on my Airport connection on my MacBook and nothing else.

I considered using Google DNS but I already use Gmail, Google Search, Google Docs and once or twice I did feel things were not as optimised as OpenDNS.

We can argue DNS until we are blue in the face but at the end of the day it is pretty simple - try your connection with centralised DNS, try it with your ISP DNS. And decide for yourself.
post #40 of 91
No, you likely just don't notice that issue with all the other issues Comcast subjects users to.


Quote:
Originally Posted by clickmyface View Post

I have Comcast, they update their servers regularly in my area, and I rarely have DNS issues.
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