Downloading from github or any remote git based repository throttles to less than 1MiB/s

I've been trying to download from github repositories as well as from AOSP repositories (which are a series of git repositories hosted on my companies cloud cluster) and I'm getting abysmal download rates. The rates are topping out at 1 MiB/s. If I power off my router and then restart it, the downloads crank back up to 20 MiB/s + but then after about 5 minutes again gets throttled down. I'm not sure what is causing this problem. After the download throttles, access to websites like facebook, etc also slows to a crawl.

Here are some traceroute reports

kartik@pop-os:~$ traceroute www.google.com

traceroute to www.google.com (142.251.32.36), 64 hops max

1 10.0.0.1 1683.330ms 292.430ms 265.869ms

2 96.120.89.217 304.928ms 321.861ms 198.776ms

3 96.110.176.249 68.999ms 60.156ms 36.599ms

4 162.151.78.129 28.936ms 33.662ms 28.845ms

5 162.151.78.253 71.586ms 30.633ms 29.460ms

6 96.108.99.249 40.846ms 29.810ms 28.729ms

7 68.86.143.93 35.869ms 38.026ms 26.712ms

8 96.97.98.246 36.806ms 29.080ms 34.042ms

9 * * *

10 108.170.242.241 27.198ms 15.740ms 10.721ms

11 108.170.242.253 10.269ms 28.324ms 25.154ms

12 142.251.32.36 15.949ms 27.040ms 12.638ms

Download rates are topping out 200 KiB/s

kartik@pop-os:~/fun/motive_aosp/qssi12/QCM6490_apps_qssi12/LINUX/android/device$ traceroute www.google.com

traceroute to www.google.com (142.251.46.196), 64 hops max

1 10.0.0.1 265.744ms 298.263ms 255.662ms

2 96.120.89.217 272.285ms 296.168ms 262.791ms

3 96.110.176.249 175.184ms 150.905ms 326.670ms

4 162.151.78.129 291.193ms 302.038ms *

5 * 162.151.78.253 261.792ms 262.812ms

6 96.108.99.249 2823.234ms 261.355ms *

7 68.86.143.93 328.351ms 256.002ms 296.354ms

8 * 69.241.75.42 114.334ms 4390.094ms

9 * * *

10 142.251.224.172 291.540ms 259.759ms 262.589ms

11 142.251.46.196 264.337ms 1800.112ms 1870.611ms

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CCDaryl

Problem Solver

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828 Messages

4 years ago

@user_93e3c9

Thank you for sharing your experience as well. I'd be happy to help figure this out with you. To help narrow down the culprit and find a resolution, can you check your other devices and see if they are seeing the same issues when looking at different websites, or running different applications?

0

BruceW

Gold Problem Solver

•

27.4K Messages

4 years ago

... 1 10.0.0.1 1683.330ms 292.430ms 265.869ms ... 1 10.0.0.1 265.744ms 298.263ms 255.662ms ...

When the RTT values to the gateway device in your home are so high, it pretty much invalidates the rest of the trace. Those first hop numbers should be a few milliseconds at the most. So the first question to answer is: "Why is there so much delay to my gateway?".

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EG

Expert

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118.3K Messages

4 years ago

@user_93e3c9

@BruceW is correct. The excessive latency starts right on your LAN / home network. Is this with a WiFi connection ? If so, for a test, does a computer that is hardwired directly to the router / gateway device with an ethernet cable show the same high latency ?

0

U

user_93e3c9

Visitor

•

7 Messages

4 years ago

I have tried three other computers including a macbook, one desktop Ubuntu and a laptop Ubuntu. All of them are over Wifi and github download is consistently at 1 - 1.5 MiB /s. Restarting the router causes the speed to increase only to drop down after a few minutes.

The slow latency with the traceroutes was observed on the desktop machine and typically is not repeatable. It happens after a long download attempt and I suddenly see browser activity also slowing down. On running a traceroute then, I get the extreme long latency. My home is not well setup for a wired connection but I will try and test that out. However, the slow github connection should not matter since it can be seen on multiple computers within the network. This is where I'm cloning from [Edited: "Personal Information"]:KartikAiyer/opencv_course.git

Its sufficiently large to see the problem. The downloads are over SSH. I have also tried downloading a repository from another org and can see the same problem.

(edited)

5

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CCKimberly1

Official Employee

•

842 Messages

Have you tested a computer that is hardwired directly to the router / gateway device with an ethernet cable and does it show the same high latency ?

I no longer work for Comcast.

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4 years ago

0

U

user_93e3c9

Visitor

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7 Messages

Again, the latency as measured by traceroute, is not repeatable and only shows up when there is massive speed degradation across the board. I have noticed this only on Wifi.

I connected a computer using the wired interface to the router and downloads from github are proceeding at 30 MiB/s. However the moment I switch over to wireless, the github download speed drops down to 1MiB/s. Is this a router configuration issue ?

On 10/27 we recd. a message from Xfinity saying that our internet speeds in our area had been upgraded from 100Mbps to 500 Mbps. Could this have had some detrimental effect on connections to certain part of the internet ? I would expect to get over 15-20 MiB/s wifi downloads from github which is what I used to get a couple of weeks ago.

4 years ago

0

U

user_93e3c9

Visitor

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7 Messages

One more thing, I took my desktop to a friends house who lives about 30 minutes in South San Jose and also has XFinity and the wireless downloads from github were exceeding 20MiB/s

4 years ago

0

XfinityTommy

Official Employee

•

2.8K Messages

Appreciate the details! Could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue.

To send a "Peer to peer" ("Private") message:
Click "Sign In" if necessary
• Click the "Peer to peer chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line

I am an Official Xfinity Employee.
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We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer. tick

4 years ago

EG

Expert

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118.3K Messages

@XfinityKimberlyB wrote;

Have you tested a computer that is hardwired directly to the router / gateway device with an ethernet cable and does it show the same high latency ?

Gee..... That sounds familiar.....

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
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4 years ago

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BruceW

Gold Problem Solver

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27.4K Messages

4 years ago

... less than 1Mib/s ... The rates are topping out at 1 MiB/s ...

For reference: Note that "Mib/s" refers to "Mebibits per second", while "MiB/s" refers to "Mebibytes per second". Also note that communication data rates are typically expressed in decimal Kilobits, Megabits, or Gigabits, not in binary Kibibits, Mebibits, or Gibibits.

Please see https://en.wikipedia.org/wiki/Data-rate_units. It's best to use standard terminology to avoid confusion.

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user_93e3c9

Visitor

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7 Messages

4 years ago

So far direct messaging support has not helped. They are throwing their hands up in the air and telling me to talk to Github. I've clearly shown that the problem seems to happen on my Wifi router, that a wired connection shows no speed degrade, that going to another persons house who also has xfinity and using their wifi does not show the problem. How is Github supposed to help.

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Your Home Network

user_93e3c9

Downloading from github or any remote git based repository throttles to less than 1MiB/s

CCDaryl

BruceW

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.

EG

user_93e3c9

CCKimberly1

user_93e3c9

user_93e3c9

XfinityTommy

EG

BruceW

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.

user_93e3c9

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