[MacPorts] #49452: rsync.macports.org is very slow

[MacPorts]

#49452: rsync.macports.org is very slow
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  Reporter:  lpancescu@…     |      Owner:  admin@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  server/hosting  |    Version:
Resolution:                  |   Keywords:
      Port:                  |
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Comment (by lpancescu@…):

 The network problem appeared to be solved today at around 9 CET, I got no
 packet loss from rsync.macports.org and a clean installation ended in 31
 minutes, a significant improvement from the 52 minutes. However, I started
 to get 0.5% packet loss at around 17 CET, which kept increasing in the
 following hours, reaching 4.2%, like the day before. Now it's almost
 midnight here, and I see the packet loss dropping again to 0.5% (at this
 error rate, rsync manages to download at 300KB/s, which is still better
 than 20KB/s). Central European time is something like 8-9 hours ahead of
 the West Coast, if I remember correctly - perhaps the packet loss is
 correlated with the start of the working day in the USA. I also used ping
 yesterday evening from a friend though another German ISP: while I saw 6%
 packet loss just minutes earlier via level3.net, at her place it was only
 2%, via xo.net (level3.net didn't appear anywhere in the traceroute). This
 probably also explains why nobody I know here managed to update iOS in the
 evening - "request timeout". I also see 0.1% packet loss from the Seattle
 mirror, which doesn't slow things down too much.

 If packet loss is normal for the main server, I can only see two
 solutions:
 1. Keep using the main server and avoid selfupdate outside of the 9-16 CET
 time interval
 2. Switch to a local mirror, in which case it would be nice to have the
 option to choose one in the installer (the missing PortIndex makes mirror
 switching painful, see my comment on bug #49050)

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Ticket URL: <https://trac.macports.org/ticket/49452#comment:8>
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