David Goulet de907893be relay: Overload state on DNS timeout is now X% over Y secs
With this commit, we will only report a general overload state if we've
seen more than X% of DNS timeout errors over Y seconds. Previous
behavior was to report when a single timeout occured which is really too
small of a threshold.

The value X is a consensus parameters called
"overload_dns_timeout_scale_percent" which is a scaled percentage
(factor of 1000) so we can represent decimal points for X like 0.5% for
instance. Its default is 1000 which ends up being 1%.

The value Y is a consensus parameters called
"overload_dns_timeout_period_secs" which is the time period for which
will gather DNS errors and once over, we assess if that X% has been
reached ultimately triggering a general overload signal.

Closes #40491

Signed-off-by: David Goulet <dgoulet@torproject.org>
2021-10-20 09:09:25 -04:00
2020-08-12 14:09:32 +03:00
2021-04-14 15:22:26 -04:00
2018-07-05 11:22:33 +03:00
2018-07-31 19:46:00 -04:00
2021-08-16 16:34:33 -04:00
2018-07-05 11:22:33 +03:00
2018-07-03 16:34:52 +03:00

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