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content/en/docs/18.0: rework vtbackup DurationByPhase into binary valued Phase #1452

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Aug 2, 2023
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content/en/docs/18.0: rework vtbackup DurationByPhase into binary valued Phase #1452

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18 changes: 9 additions & 9 deletions content/en/docs/18.0/reference/backup-and-restore/metrics.md
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Expand Up @@ -50,11 +50,11 @@ _restore_duration_seconds_ times the duration of a restore. This metric is depre

Vtbackup exports some metrics which are not available elsewhere.

#### DurationByPhaseSeconds
#### Phase

Vtbackup fetches the last backup, restores it to an empty mysql installation, replicates recent changes into that installation, and then takes a backup of that installation.

_DurationByPhaseSeconds_ exports timings for these individual phases.
_Phase_ a binary-valued gauge that reports the currently active phase.

<hr style="border-top: 2px dashed brown">

Expand Down Expand Up @@ -91,11 +91,11 @@ _DurationByPhaseSeconds_ exports timings for these individual phases.
"BackupEngine.Builtin.Destination:Close": 17144630,
"BackupStorage.File.File:Write": 10743169
},
"DurationByPhaseSeconds": {
"InitMySQLd": 2,
"RestoreLastBackup": 6,
"CatchUpReplication": 1,
"TakeNewBackup": 4
"Phase": {
"InitialBackup": 0,
"RestoreLastBackup": 0,
"CatchUpReplication": 0,
"TakeNewBackup": 0
},
"RestoreBytes": {
"BackupEngine.Builtin.Source:Read": 1095,
Expand Down Expand Up @@ -131,6 +131,6 @@ _DurationByPhaseSeconds_ exports timings for these individual phases.
Some notes to help understand these metrics:

* `BackupBytes["BackupStorage.File.File:Write"]` measures how many bytes were read from disk by the `file` Backup Storage implementation during the backup phase.
* `DurationByPhaseSeconds["CatchUpReplication"]` measures how long it took to catch-up replication after the restore phase.
* `DurationByPhaseSeconds["RestoreLastBackup"]` measures to the duration of the restore phase.
* `Phase["CatchUpReplication"]` reports whether the catch-up replication phase is active (1) or not (0).
* `Phase["RestoreLastBackup"]` reports whether the restore last backup phase is active (1) or not (0).
* `RestoreDurationNanoseconds["-.-.Restore"]` also measures to the duration of the restore phase.