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start_server {tags {"latency-monitor"}} {
# Set a threshold high enough to avoid spurious latency events.
r config set latency-monitor-threshold 200
r latency reset
test {Test latency events logging} {
r debug sleep 0.3
after 1100
r debug sleep 0.4
after 1100
r debug sleep 0.5
assert {[r latency history command] >= 3}
}
test {LATENCY HISTORY output is ok} {
set min 250
set max 450
foreach event [r latency history command] {
lassign $event time latency
assert {$latency >= $min && $latency <= $max}
incr min 100
incr max 100
set last_time $time ; # Used in the next test
}
}
test {LATENCY LATEST output is ok} {
foreach event [r latency latest] {
lassign $event eventname time latency max
assert {$eventname eq "command"}
assert {$max >= 450 & $max <= 650}
assert {$time == $last_time}
break
}
}
test {LATENCY HISTORY / RESET with wrong event name is fine} {
assert {[llength [r latency history blabla]] == 0}
assert {[r latency reset blabla] == 0}
}
test {LATENCY DOCTOR produces some output} {
assert {[string length [r latency doctor]] > 0}
}
test {LATENCY RESET is able to reset events} {
assert {[r latency reset] > 0}
assert {[r latency latest] eq {}}
}
}
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