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Give up liveness slashing #2254

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Give up liveness slashing #2254

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57c9ec9
Give up liveness slashing
s0me0ne-unkn0wn Nov 9, 2023
adfacbe
Remove liveness slashing test
s0me0ne-unkn0wn Nov 9, 2023
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13 changes: 3 additions & 10 deletions substrate/frame/im-online/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -855,15 +855,8 @@ impl<Offender: Clone> Offence<Offender> for UnresponsivenessOffence<Offender> {
DisableStrategy::Never
}

fn slash_fraction(&self, offenders: u32) -> Perbill {
// the formula is min((3 * (k - (n / 10 + 1))) / n, 1) * 0.07
// basically, 10% can be offline with no slash, but after that, it linearly climbs up to 7%
// when 13/30 are offline (around 5% when 1/3 are offline).
if let Some(threshold) = offenders.checked_sub(self.validator_set_count / 10 + 1) {
let x = Perbill::from_rational(3 * threshold, self.validator_set_count);
x.saturating_mul(Perbill::from_percent(7))
} else {
Perbill::default()
}
fn slash_fraction(&self, _offenders: u32) -> Perbill {
// We're not slashing for being offline anymore (see #1964)
Perbill::zero()
}
}
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