874115 - Slow bandwidth from servers ftp1/2-zlb.vips.scl3.mozilla.com when upgrading nightly or downloading nightlies with mozregression

Status: RESOLVED WONTFIX

(Infrastructure & Operations Graveyard :: WebOps: Other, task, P5)

Description

[Loic]

As bug triager, I use the tool mozregression regularly to find some regressions in BMO. In addition, I use Nighty to beta-test and I update it daily.

Since a few weeks, I'm experiencing slow bandwidth between Mozilla's servers (ftp1-zlb.vips.scl3.mozilla.com & ftp2-zlb.vips.scl3.mozilla.com) and my ISP (Orange.fr) during downloading nightlies or updating Nightly.

The issue is sporadic (but in majority), I checked with TCPView and it's clearly visible: I get sometimes only a DL bit rate at 400-800 kbps instead of the max of my connection which is ~12-13 Mbps.

I tried to reinstall mozregression, same issue.

Is there a way to find if the issue is related to Mozilla's servers or if my ISP is throttling your FTP (which would be surprising)?

Comment 1

[Dumitru Gherman [:dumitru]]

How is this tool fetching the packages? Via what protocol? ftp/http(s)?

Comment 2

[Loic]

For the record: http://harthur.github.io/mozregression/

HTTP, I guess:
python.exe	6240	TCP	xxx.home	60465	ftp2-zlb.vips.scl3.mozilla.com	http	ESTABLISHED	1	219	1 957	20 969 331

Comment 3

[Loic]

Right now, I'm downloading nightly 2013-05-02 from ftp2-zlb.vips.scl3.mozilla.com to my IP 86.204.143.5, you should see the bandwidth in your logs.

Comment 4

[Daniel Maher [:phrawzty]]

Bonjour,

Unlike our release channel, the nightlies are not served via a CDN, which means that they do not draw from a large global pool of bandwidth - this explains the speeds that you are experiencing.  We may move the nightlies to a CDN in the future, but for now, this situation is not expected to change.