Kubelet API / stats / summary /用法NanoCores不正确
[英]Kubelet API /stats/summary/ usageNanoCores not correct
问题描述
Kubernetes version: 1.3.0 Docker version: 1.10.3 OS: CoreOS stable (1068.9.0) VM: m3.xlarge 
Kubernetes版本：1.3.0 Docker版本：1.10.3操作系统：CoreOS稳定版（1068.9.0）VM：m3.xlarge
On k8s node I am querying the kubelet /stats/summary to get CPU usage for node and am seeing unexpected results. 在k8s节点上，我正在查询kubelet / stats / summary以获取该节点的CPU使用率，并看到意外的结果。 Below is output of top command, I have run command to consume 100% of CPU. 下面是top命令的输出，我有run命令消耗了100％的CPU。
Output from top Command top命令的输出
Here are the usageNanoCores and time values from calling /stats/summary/. 这是来自调用/ stats / summary /的useNanoCores和时间值。
usageNanoCores: 3203229858
time: 2016-09-06T20:37:44Z
usageNanoCores: 3497892888
time: 2016-09-06T20:38:02Z
usageNanoCores: 3497892888
time: 2016-09-06T20:38:02Z
usageNanoCores: 3318318883
time: 2016-09-06T20:38:18Z
usageNanoCores: 3419241048
time: 2016-09-06T20:38:34Z
usageNanoCores: 3218012832
time: 2016-09-06T20:38:46Z
usageNanoCores: 3218012832
time: 2016-09-06T20:38:46Z
usageNanoCores: 3673825154
time: 2016-09-06T20:38:58Z
usageNanoCores: 3213540614
time: 2016-09-06T20:39:16Z
usageNanoCores: 3213540614
time: 2016-09-06T20:39:16Z
usageNanoCores: 3560073628
time: 2016-09-06T20:39:29Z
usageNanoCores: 3196742360
time: 2016-09-06T20:39:43Z
usageNanoCores: 3196742360
time: 2016-09-06T20:39:43Z
usageNanoCores: 3543065178
time: 2016-09-06T20:39:59Z
usageNanoCores: 3323870743
time: 2016-09-06T20:40:18Z
usageNanoCores: 3323870743
time: 2016-09-06T20:40:18Z
usageNanoCores: 3486174845
time: 2016-09-06T20:40:36Z
usageNanoCores: 3486174845
time: 2016-09-06T20:40:36Z
usageNanoCores: 3961347785
time: 2016-09-06T20:40:54Z
usageNanoCores: 3683434468
time: 2016-09-06T20:41:05Z
usageNanoCores: 3892752522
time: 2016-09-06T20:41:19Z
usageNanoCores: 3892752522
time: 2016-09-06T20:41:19Z
usageNanoCores: 3867897133
time: 2016-09-06T20:41:34Z
usageNanoCores: 3867897133
time: 2016-09-06T20:41:34Z
usageNanoCores: 3546368625
time: 2016-09-06T20:41:54Z
Since usageNanoCores is the "Total CPU usage (sum of all cores) averaged over the sample window" and I have 4 cores, shouldn't usageNanoCores be constistantly closer to 4000000000? 由于usageNanoCores是“在示例窗口中平均的CPU总使用率（所有内核的总和）”，并且我有4个内核，所以usageNanoCores是否应始终接近4000000000？
1 个解决方案
解决方案1
0 已采纳 2016-09-07 00:23:22
top %cpu is percentage of a single core, so it looks like your busy process is single threaded and only using 100% of a single core. top ％cpu是单核的百分比，因此看起来您繁忙的进程是单线程的，并且仅使用100％的单核。 If you run 4 of them, I would expect usageNanoCores to be closer to the expected 4B. 如果您运行其中的4个，我希望usageNanoCores会更接近预期的4B。
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