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Re: [tor-bugs] #3261 [Analysis]: Analyze how wrong our bridge usage statistics are
#3261: Analyze how wrong our bridge usage statistics are
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Reporter: karsten | Owner:
Type: task | Status: new
Priority: major | Milestone:
Component: Analysis | Version:
Keywords: | Parent:
Points: | Actualpoints:
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Comment(by karsten):
I ran an analysis to see what fraction of bridges reports statistics.
More precisely, I looked at the fraction of relayed bytes per day that is
covered by bridge statistics. In theory, this fraction should roughly
correspond to the fraction of bridge users being included in our bridge
statistics.
See the attached graph. The fraction starts at around 10-20% in October
2010 and slowly increases to 20-30% in July 2010. The gaps in February
and July 2011 come from Tonga downtimes. The incline in late September
2011 to 50% probably comes from a few fast and stable bridges pushing
larger parts of bridge traffic.
Note that this analysis doesn't specifically look at the reasons why
bridges don't report statistics. Possible reasons are less than 24 hours
uptime, delay in descriptor publication (#4142), too old versions, etc.
It's just meant as a general overview. More analysis needed.
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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3261#comment:2>
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