This topic describes performance metrics related to the Linux system load of a host. You can determine whether the current host is overloaded based on the trend charts of the metrics: load1, load5, and load15. If the value of load5 or load15 is always greater than the total number of CPU cores on the host, the host is overloaded. You can run the grep 'model name' /proc/cpuinfo | wc -l command to query the number of CPU cores of the current host.
load1
Definition
The average system load in the last minute.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| load1 | load1 | - |
Calculation expression
avg(node_load1{@LABELS}) by (@GBLABELS)
load5
Definition
The average system load in the last five minutes.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| load5 | load5 | - |
Calculation expression
avg(node_load5{@LABELS}) by (@GBLABELS)
load15
Definition
The average system load in the last 15 minutes.
Description
| Metric | Metric field name | Unit |
|---|---|---|
| load15 | load15 | - |
Calculation expression
avg(node_load15{@LABELS}) by (@GBLABELS)