fix: Observe accurate backend_read_seconds duration#27848
Merged
codingllama merged 2 commits intomasterfrom Jun 14, 2023
Merged
fix: Observe accurate backend_read_seconds duration#27848codingllama merged 2 commits intomasterfrom
backend_read_seconds duration#27848codingllama merged 2 commits intomasterfrom
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FYI @rosstimothy @espadolini, if you do monitor this I would expect a jump once this PR lands. Sorry for making our metrics worse. ;) |
codingllama
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Jun 14, 2023
| start := s.Clock().Now() | ||
| res, err := s.Backend.GetRange(ctx, startKey, endKey, limit) | ||
| batchReadLatencies.WithLabelValues(s.Component).Observe(time.Since(start).Seconds()) | ||
| batchReadLatencies.WithLabelValues(s.Component).Observe(s.Clock().Since(start).Seconds()) |
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Using a time.Now/time.Since pair is also fine, but I expect the clock will raise less eyebrows.
codingllama
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backend_read_seconds duration
espadolini
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Jun 14, 2023
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cc @dilchenko too |
rosstimothy
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Jun 14, 2023
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Jun 14, 2023
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Thanks everyone for the quick reviews. |
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@codingllama See the table below for backport results.
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This was referenced Jun 14, 2023
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The
backend_read_secondsmetric is not accounting for the read itself, this fixes that. Additionally, we now use the same clock to determine start and end times.