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logical_disk: remove the *_latency_seconds_total counters (#2763)

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Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
This commit is contained in:
Jan-Otto Kröpke
2026-10-16 20:41:42 +02:00
committed by GitHub
parent f1e6b49c54
commit 3555e9c4bc
9 changed files with 57 additions and 84 deletions
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docs/collector.logical_disk.md
+12 -3
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@@ -39,9 +39,6 @@ Comma-separated list of collectors to use. Available collectors: metrics, bitloc
| `windows_logical_disk_size_bytes` | Total size of the disk in bytes | gauge | `volume` |
| `windows_logical_disk_idle_seconds_total` | Seconds the disk was idle (not servicing read/write requests) | counter | `volume` |
| `windows_logical_disk_split_ios_total` | Number of I/Os to the disk split into multiple I/Os | counter | `volume` |
| `windows_logical_disk_read_latency_seconds_total` | Shows the average time, in seconds, of a read operation from the disk | counter | `volume` |
| `windows_logical_disk_write_latency_seconds_total` | Shows the average time, in seconds, of a write operation to the disk | counter | `volume` |
| `windows_logical_disk_read_write_latency_seconds_total` | Shows the time, in seconds, of the average disk transfer | counter | `volume` |
| `windows_logical_disk_readonly` | Whether the logical disk is read-only | gauge | `volume` |
| `windows_logical_disk_bitlocker_status` | BitLocker status for the logical disk | gauge | `volume`,`status` |
@@ -59,6 +56,18 @@ rate(windows_logical_disk_read_seconds_total[5m])
rate(windows_logical_disk_write_seconds_total[5m])
```
### Average latency
`Avg. Disk sec/Read`, `Avg. Disk sec/Write` and `Avg. Disk sec/Transfer` divide the busy time by the number of operations.
Their raw time values are the same as the ones of `% Disk Read Time` and `% Disk Write Time`, so the exporter only exposes
`windows_logical_disk_read_seconds_total` and `windows_logical_disk_write_seconds_total`.
The former `windows_logical_disk_read_latency_seconds_total`, `windows_logical_disk_write_latency_seconds_total` and
`windows_logical_disk_read_write_latency_seconds_total` counters held the same busy time, not a latency, and were removed in 0.32.
Divide the busy time by the number of operations for the average latency:
```
rate(windows_logical_disk_read_seconds_total[5m]) / rate(windows_logical_disk_reads_total[5m])
rate(windows_logical_disk_write_seconds_total[5m]) / rate(windows_logical_disk_writes_total[5m])
```
### Size metrics
The `free_bytes` and `size_bytes` metrics are read from the volume on every scrape. Both are the free and total bytes
of the whole volume, regardless of NTFS disk quotas of the account running windows_exporter.