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Add Historic CPU and memory stats (#7136)

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Collect historic cpu and mem stats.  Also, use actual values 
instead of formatted strings while returning to the client. The string 
formatting prevents values from being processed by the server or 
by the client without parsing it. 

This change will allow the values to be processed (eg. 
compute rolling-average over the lifetime of the minio server)
and offloads the formatting to the client.
This commit is contained in:
Sidhartha Mani
2019-01-29 23:17:32 -08:00
committed by Nitish Tiwari
parent d0015b4d66
commit 34e7259f95
6 changed files with 126 additions and 33 deletions
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8
pkg/madmin/API.md
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@@ -235,9 +235,9 @@ Fetches CPU utilization for all cluster nodes. Returned value is in Bytes.
| Param | Type | Description |
|-------|------|-------------|
|`cpu.Load.Avg` | _string_ | The average utilization % of the CPU measured in a 200ms interval |
|`cpu.Load.Min` | _string_ | The minimum utilization % of the CPU measured in a 200ms interval |
|`cpu.Load.Max` | _string_ | The maximum utilization % of the CPU measured in a 200ms interval |
|`cpu.Load.Avg` | _float64_ | The average utilization of the CPU measured in a 200ms interval |
|`cpu.Load.Min` | _float64_ | The minimum utilization of the CPU measured in a 200ms interval |
|`cpu.Load.Max` | _float64_ | The maximum utilization of the CPU measured in a 200ms interval |
|`cpu.Load.Error` | _string_ | Error (if any) encountered while accesing the CPU info |
<a name="ServerMemUsageInfo"></a>
@@ -253,7 +253,7 @@ Fetches Mem utilization for all cluster nodes. Returned value is in Bytes.
| Param | Type | Description |
|-------|------|-------------|
|`mem.Usage.Mem` | _string_ | The total number of bytes obtained from the OS |
|`mem.Usage.Mem` | _uint64_ | The total number of bytes obtained from the OS |
|`mem.Usage.Error` | _string_ | Error (if any) encountered while accesing the CPU info |
## 6. Heal operations