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Tor has configure libevent to attempt up to 3 times a DNS query for a maximum of 5 seconds each. Once that 5 seconds has elapsed, it consider the query "Timed Out" but tor only gets a timeout if all 3 attempts have failed. For example, using Unbound, it has a much higher threshold of timeout. It is well defined in https://www.nlnetlabs.nl/documentation/unbound/info-timeout/ and has some complexity to it. But the gist is that if it times out, it will be much more than 5 seconds. And so the Tor DNS timeouts are more of a "UX issue" rather than a "network issue". For this reason, we are removing this metric from the overload general signal. See https://gitlab.torproject.org/tpo/network-health/team/-/issues/139 for more information. Fixes #40527 Signed-off-by: David Goulet <dgoulet@torproject.org>
6 lines
304 B
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6 lines
304 B
Plaintext
o Major bugfixes (relay, overload):
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- Don't make Tor DNS timeout trigger an overload general state. These
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timeouts are different from DNS server timeout. They have to be seen as
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timeout related to UX and not because of a network problem. Fixes bug
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40527; bugfix on 0.4.6.1-alpha.
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