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Full Syncing non stop #182

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grandfso opened this issue Jul 16, 2019 · 3 comments
Closed

Full Syncing non stop #182

grandfso opened this issue Jul 16, 2019 · 3 comments
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@yuuki0xff

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@grandfso
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Hello,
when I launch the latest version of the app (1.2.1 from PyPi), it constantly says 'Full Syncing'. Nothing interesting appears in the logs.

2019-07-16 11:50:27,163 - DEBUG - nvpy logging initialized
2019-07-16 11:50:27,163 - DEBUG - config read from ['/home/grand/.nvpy.cfg']
2019-07-16 11:50:27,448 - DEBUG - Starting full sync.
2019-07-16 11:50:27,499 - DEBUG - Retrieving full note list from server, could take a while.
@yuuki0xff yuuki0xff self-assigned this Jul 16, 2019
@yuuki0xff
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yuuki0xff commented Jul 22, 2019 •
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The same issue has been confirmed in my environment from June 24, 2019. Probably, the full sync is running. it takes a very long time.

I investigated this issue with packet capture, I confirmed the following.

  1. nvPY sends valid request to API server.
  2. API server reply quickly.
  3. About two seconds after connection is established, a large amount of packet lost continuously, and TCP throughput was extremely reduced.

The point is that download speed is very slow, but the download is ongoing. The same behavior was confirmed using several different networks [1], so I suspects that a band-limiting device exists on the route.

For this problem, what nvPY can do is limited. Because nvPY can not determine reason for the download speed issue whether narrow band network or band-limiting. If you have any good ideas, please let me know.

[1]: Tested on mobile, CATV line and university network

yuuki0xff added a commit that referenced this issue Jul 22, 2019
@yuuki0xff
reduce response size to prevent band-limiting
3ec5cd2 
API server will limit bandwidth while downloading the large response.
To avoid this problem, reduce the response size.

See #182
@yuuki0xff
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I added a workaround and pushed to master branch. Please try it.

$ python2 -m pip install --upgrade 'git+https://github.com/cpbotha/nvpy.git#egg=nvpy'
$ nvpy

@grandfso
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I did install the latest version and it is working fine. Many thanks.

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