docker - 在Grafana中查看Docker CPU的使用情况-是吗？

Question

根据Docker Docs，ciff被报告为吉普赛:

For each container, a pseudo-file cpuacct.stat contains the CPU usage accumulated by the processes of the container, broken down into user and system time. The distinction is:

• user time is the amount of time a process has direct control of the CPU, executing process code.
• system time is the time the kernel is executing system calls on behalf of the process.

Those times are expressed in ticks of 1/100th of a second, also called “user jiffies”. There are USER_HZ “jiffies” per second, and on x86 systems, USER_HZ is 100. Historically, this mapped exactly to the number of scheduler “ticks” per second, but higher frequency scheduling and tickless kernels have made the number of ticks irrelevant.

但是，我似乎无法弄清楚如何在grafana中将其显示为某种“容器cpu使用率”，因为每个指标都在100ks以内。有什么建议么？

Answer 1

数学:

计算每秒的变化=每秒的速率(仅当您在TSDB中具有原始jiffy值时)

将结果乘以100

结果将是％CPU使用率。

默认情况下，您无法在Grafana中进行这种数学运算。这是TSDB的一项任务，Grafana只会可视化从TSDB返回的计算结果。

InfluxDB(TSDB)的(未经测试)示例:

SELECT 
  DERIVATIVE("jiffy_value_field",1s)*100 
FROM <measurement> 
WHERE ...