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I have a 30 Mbps internet connection. When I run a speed test against my connection I almost always hit 30 Mbps. However, when I download podcasts and other files from iTunes my download speeds max out at just over 7 Mbps. I ran the diagnostics in iTunes and everything checked out fine. Any ideas on why I getting such a slow download speed?
Windows 7
I can't help, but by way of confirmation, I typically get a 12 hour forecast for downloading a SD movie on a PC.
This is not your system.
I have to stay up tending the computer- it may speed up overnite. Sometimes it loses even that which it had and starts over.
It's not my system. Netflix streams away with never a buffering moment, reliably, any time of day.
I wish, when the issue is clearly Itunes/apple only issue , they would stop dishing out the usual suspects which a savvy user will haved tried a million times already. It's a terrible time waster.
I'd fell much better if they said " We have server and distributor issues, we're sorry and we are fixing it."
Its laughable.
I used to be Global Ecoomerce Tech Manager for a large multinational business.
Albeit not as big as Apple. But if that business was running this show the service would be pulled.
Or operated only in those locations that the service could be of a good service level.
With respect these people talking about DNS are off their trolley !!
If national newspapers got hold of this story.....hmmm...maybe I will just send them it !!
Well, I just offered my help. This is a support forum, not a complaints department.
Can you please explain to me why DNS does not affect downstream traffic? If you would like to get some help on this forum, please feel free to give some more information about your ISP, which DNS you are using and eventually how many hops you get before you reach e.g. trailers.apple.com or swcdn.apple.com.
1) swcdn.apple.com -> 50.270 ms in 8 hops, trailers.apple.com -> 306.196 ms in also 8 hops and more interestingly a1442.v.phobos.apple.com from where I believe I downloaded my last rental HD -> 67.122 ms in 8 hops.
2) Which ISP do you use?
Tele2 (Big swedish reliable ISP)
3) How long time does a regular movie take to download?
from the web a DVD-sized HD movie like "PressPausePlay" takes around 2 hours. From iTMS it took 3 hours for roughly the same size.
4) How long time do you expect it to take?
2 hours at best at my current connection speed*, but if I had 24-32mbit connection around half an hour would be decent depending on circumstances.
Nothing else was using the net during the download as I wanted the movie ASAP.
1) Interesting results. Numbers of hops (a1442.v.phobos.apple.com) is similar to what I get in Norway using Uninett. But I get slightly lower round trip time, around 10 ms +/- 20% when using Uninett:
4 se-tug.nordu.net (109.105.102.21) 8.914 ms 8.831 ms 9.397 ms
5 se-fre.nordu.net (109.105.97.1) 23.490 ms 9.306 ms 9.193 ms
6 * s-b3-link.telia.net (213.248.97.17) 11.580 ms 8.975 ms
7 80-239-254-58.customer.teliacarrier.com (80.239.254.58) 9.032 ms 9.333 ms 11.615 ms
You are not served from a1442.v.phobos.apple.com. That is just a CNAME (alias) for a1442.v.phobos.apple.com.edgesuite.net - which is a DNS server for Akamai. Are you able to post parts of your traceroute here? You can hide your own IP, but it is interesting to look from where you actually are served.
2) Do they prioritize traffic? I am not sure if you have net neutrality rules in Sweden?
3) I agree that is too slow. But 2 hours is also slow.
4) Seems reasonable. 4 GB will use approximately 1 hour on 10 Mbit. But bear in mind that if you have significant overhead in your network (it seems like that), the mathematical calculations won't necessarily matches practice.
These are the results for me here in the Netherlands...
traceroute: Warning: a1442.v.phobos.apple.com.edgesuite.net has multiple addresses; using 65.172.31.51
traceroute to a1442.w11.akamai.net (65.172.31.51), 64 hops max, 72 byte packets
1 192.168.2.254 (192.168.2.254) 1.305 ms 1.015 ms 0.840 ms
2 195.190.241.14 (195.190.241.14) 41.047 ms 37.310 ms 40.921 ms
3 nl-asd-dc2-ice-ir02.kpn.net (213.75.1.66) 45.777 ms 42.789 ms 47.825 ms
4 nl-asd-dc2-ice-ir02.kpn.net (213.75.1.66) 48.582 ms 47.086 ms 47.821 ms
5 nl-asd-dc2-ice-ir01.kpn.net (213.75.1.146) 41.676 ms 38.095 ms 48.001 ms
6 asd2-rou-1022.nl.eurorings.net (134.222.93.138) 36.768 ms 45.289 ms 36.520 ms
7 nyk-s1-rou-1001.us.eurorings.net (134.222.231.230) 125.279 ms 125.147 ms 124.979 ms
8 nyk-s1-rou-1021.us.eurorings.net (134.222.231.238) 120.605 ms 120.313 ms 120.231 ms
9 ahbn-s1-rou-1001.us.eurorings.net (134.222.232.34) 124.779 ms 137.846 ms 125.954 ms
10 ahbn-s1-rou-1041.us.eurorings.net (134.222.231.121) 125.196 ms 124.785 ms 124.819 ms
11 sl-st31-ash-.sprintlink.net (144.228.205.37) 125.857 ms 125.830 ms 125.442 ms
12 sl-crs2-dc-0-13-0-0.sprintlink.net (144.232.25.14) 127.751 ms 127.302 ms 127.398 ms
13 sl-crs2-rly-0-0-3-0.sprintlink.net (144.232.8.165) 129.270 ms 129.528 ms 129.914 ms
14 144.232.4.186 (144.232.4.186) 143.139 ms 142.337 ms 142.351 ms
15 144.232.20.187 (144.232.20.187) 142.701 ms 143.844 ms 143.212 ms
16 144.232.1.104 (144.232.1.104) 141.983 ms 142.265 ms 141.970 ms
17 65.172.31.51 (65.172.31.51) 142.205 ms 142.755 ms 142.584 ms
I don't know how to interperate these readings...
Try to traceroute swcdn.apple.com or trailers.apple.com instead. That will give a more realistic picture from your position.
1) traceroute: Warning: a1442.v.phobos.apple.com.edgesuite.net has multiple addresses; using 212.247.20.41
traceroute to a1442.w11.akamai.net (212.247.20.41), 64 hops max, 52 byte packets
1 dsldevice.lan (192.168.xxx.xxx) 66.854 ms 86.385 ms 97.996 ms
2 dXXXXXX.cust.tele2.se (x.x.x.x) 361.574 ms 352.081 ms 218.999 ms
3 xx.tele2.net (130.244.x.xxx) 192.381 ms 262.468 ms 245.016 ms
4 * * *
5 * bck-core-1.tengige0-1-1-0.tele2.net (130.244.68.27) 259.299 ms 139.350 ms
6 * kst5-core-1.bundle-ether4.tele2.net (130.244.39.140) 171.429 ms *
7 * * *
8 * 212.247.20.41 (212.247.20.41) 176.641 ms 205.933 ms
2) They're not prioritizing that I know of or that I can detect. They're not known for meddling with services. But who knows for sure?
3) Yeah, but I can live with 2 hours for now, even if I'd prefer faster.
4) There's no measurable heavyhanded overhead and in addition other types of downloads from other servers go very very fast, usually close to filling my bandwidth, though not always. Occassionally there are problems but I don't see how those comes in play here. Intermittant network problems are a pita.
You have to much round trip time already at your router. I find that fairly strange, and suggest that the problem either is in your local network or somewhere in your ISP's network.
When I traceroute the same IP that you got, I get the following result:
4 se-tug.nordu.net (109.105.102.21) 9.412 ms 9.176 ms 9.127 ms
5 se-fre.nordu.net (109.105.97.1) 10.485 ms 13.533 ms 9.918 ms
6 avk-core-1.gigabiteth4-0-0.swip.net (194.68.128.21) 9.247 ms 9.471 ms 9.407 ms
7 kst5-peer-1.ae1-unit0.tele2.net (130.244.39.10) 10.409 ms 11.931 ms 10.061 ms
8 212.247.20.41 (212.247.20.41) 10.153 ms 9.718 ms 12.441 ms
If I run a traceroute on the hostname, I get this:
5 se-fre.nordu.net (109.105.97.1) 9.944 ms 10.638 ms 9.926 ms
6 s-b3-link.telia.net (213.248.97.17) 9.205 ms 9.569 ms *
7 80-239-254-58.customer.teliacarrier.com (80.239.254.58) 10.310 ms 9.311 ms 9.278 ms
Do you get significant better RTT if you ping/traceroute other services?
How is that relevant here when I have just verified 7mbit/s with 40ms response time?
Sorry. that may have sounded harsh which was not my intention.
All this talk about DNS made me look harder on my network issues, like mean speeds and the occassional drop out. I found this interesting tool "Namebench" https://code.google.com/p/namebench/ for evaluating Name Servers and I am chasing the best DNS for my network now.
I don't care about DNS or any other technicqal aspect. I just paid 16 quid for videos that I want to watch on my PC now - as in today. If I want to wait days to see the videos I want then I'll go to Tesco and get them just as cheaply. Pull your finger out Apple. You can take your design and coolness and must have BS and save it for the hyped up stage launches. Here in the everyday world I want my videos. Where are they? You have my money. I want my videos and when I see 3500 hours left to download then, OBVIOUSLY, that;s not good enough. Not even close. Get it sorted or stop charging people money.
awesome, that fixed the problem! Went form 55 hours to 12 minutes.
I found that if you have a video that you've already downloaded, playing, while you download, the speed is noticeably faster.
This article is so helpfull, i disable my antivirus "Kaspersky" and download 65mb/s now 🙂 thanks 🙂
Why are My iTunes Downloads so Slow?
