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Document expected delays in the size metrics 

Signed-off-by: Ben Reedy <breed808@breed808.com>
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JDA88 2021-09-30 22:56:00 +02:00 committed by Ben Reedy
parent 5b92e1bd3d
commit bbefd8ac97
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2 changed files with 8 additions and 4 deletions
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4
collector/logical_disk.go
View File

@ -103,14 +103,14 @@ func NewLogicalDiskCollector() (Collector, error) {
FreeSpace: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "free_bytes"),
"Free space in bytes (LogicalDisk.PercentFreeSpace)",
"Free space in bytes, updates every 10-15 min (LogicalDisk.PercentFreeSpace)",
[]string{"volume"},
nil,
),
TotalSpace: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "size_bytes"),
"Total space in bytes (LogicalDisk.PercentFreeSpace_Base)",
"Total space in bytes, updates every 10-15 min (LogicalDisk.PercentFreeSpace_Base)",
[]string{"volume"},
nil,
),

8
docs/collector.logical_disk.md
View File

@ -30,11 +30,15 @@ Name | Description | Type | Labels
`writes_total` | Rate of write operations on the disk | counter | `volume`
`read_seconds_total` | Seconds the disk was busy servicing read requests | counter | `volume`
`write_seconds_total` | Seconds the disk was busy servicing write requests | counter | `volume`
`free_bytes` | Unused space of the disk in bytes | gauge | `volume`
`size_bytes` | Total size of the disk in bytes | gauge | `volume`
`free_bytes` | Unused space of the disk in bytes (not real time, updates every 10-15 min) | gauge | `volume`
`size_bytes` | Total size of the disk in bytes (not real time, updates every 10-15 min) | gauge | `volume`
`idle_seconds_total` | Seconds the disk was idle (not servicing read/write requests) | counter | `volume`
`split_ios_total` | Number of I/Os to the disk split into multiple I/Os | counter | `volume`
### Warning about size metrics
The `free_bytes` and `size_bytes` metrics are not updated in real time and might have a delay of 10-15min.
This is the same behavior as the windows performance counters.
### Example metric
Query the rate of write operations to a disk
```