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Re: [tor-bugs] #5235 [Tor Directory Authority]: 550 Hz warn-level log spam on dirauth (â[warn] Weighted bandwidth is 0.000000...â)
#5235: 550 Hz warn-level log spam on dirauth (â[warn] Weighted bandwidth is
0.000000...â)
-------------------------------------+--------------------------------------
Reporter: ln5 | Owner:
Type: defect | Status: needs_review
Priority: normal | Milestone: Tor: 0.2.3.x-final
Component: Tor Directory Authority | Version:
Keywords: easy | Parent:
Points: | Actualpoints:
-------------------------------------+--------------------------------------
Changes (by andrea):
* status: new => needs_review
Comment:
This patch rate-limits the message; since this function is called very
frequently, it would probably be advisable to apply similar rate-limiting
to the other two warning messages it can emit ("Round-off error in
computing bandwidth had an effect on which router we chose", "Consensus is
not listing bandwidths. Defaulting back to old router selection
algorithm.").
For possible further investigation: why would this sum to zero? The
function exits early if the list is empty, so this message can only be
emitted if the list contains one or more nodes which contribute zero
bandwidth to the total and none that contribute non-zero bandwidth. A
node can contribute zero bandwidth if node->rs->bandwidth is zero, or if
all the weight factors applied are zero. Which is it that has occurred
here?
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5235#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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