TransferMetrics

Remarks

⚠ A transfer that degrades is one that stops being seamless quietly, which is the whole argument for measuring it. The overlap getting longer is a content-delivery problem; the commit latency getting longer is a control-plane problem; the abort histogram growing a new tallest bar is whichever of them just broke. None of the three is visible without the numbers, because every one of them still works — it just works worse.

Fields and properties (5)

• public int Committed

  How many transfers finished.

• public int Aborted

  How many did not.

• public int PredictionResets

  How many prediction resets clients have reported.

• public int Attempted

  How many were attempted.

• public double SuccessRate

  The fraction that finished, or one when none has been attempted.

Methods (7)

• public void Record(SourceTransfer transfer)

  Records a transfer that finished.

• public void RecordResets(int count)

  Records a client's report of its own reset.

• public int AbortsFor(TransferAbort reason)

  How many transfers gave up for a reason.

• public IReadOnlyList<(TransferAbort Reason, int Count)> AbortHistogram()

  The abort histogram, worst first — the shape doc 27 § Diagnostics asks for.

• public double OverlapAt(double percentile)

  How long the overlap lasts at a percentile.

• public double CommitLatencyAt(double percentile)

  How long the whole transfer takes at a percentile.

• public override string ToString()

  Returns a string that represents the current object.

Used by (3)

• RealmTransfersVixen.Live.Realm
• TransferMetricsTestsVixen.Live.Transfer.Tests
• TransferOracleTestsVixen.Live.Realm.Tests