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[tor-bugs] #26597 [Metrics/Onionperf]: Investigate and document additional overhead for first hop when not using guards

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Subject: [tor-bugs] #26597 [Metrics/Onionperf]: Investigate and document additional overhead for first hop when not using guards
From: "Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>
Date: Mon, 02 Jul 2018 11:13:17 -0000
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#26597: Investigate and document additional overhead for first hop when not using
guards
-----------------------------------+------------------
     Reporter:  irl                |      Owner:  hiro
         Type:  defect             |     Status:  new
     Priority:  Medium             |  Milestone:
    Component:  Metrics/Onionperf  |    Version:
     Severity:  Normal             |   Keywords:
Actual Points:                     |  Parent ID:
       Points:                     |   Reviewer:
      Sponsor:                     |
-----------------------------------+------------------
 Initial plots in #25774 have shown that there is considerably higher
 circuit build latency from building the 1st hop compared to subsequent
 hops. This may be due to not using guards and some additional overhead
 that is not seen by normal clients when using guards (as it happens before
 the circuits are actually needed).

 We should investigate this and document it as part of the page on Tor
 Metrics for #25774.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26597>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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