k8s 监控 metric-server cpu 内存单位换算

计算方法：次方
func newSuffixer() suffixer {
	sh := &suffixHandler{}
 
    // 内存单位计算
	sh.binSuffixes.addSuffix("Ki", bePair{2, 10})
	sh.binSuffixes.addSuffix("Mi", bePair{2, 20})
	sh.binSuffixes.addSuffix("Gi", bePair{2, 30})
	sh.binSuffixes.addSuffix("Ti", bePair{2, 40})
	sh.binSuffixes.addSuffix("Pi", bePair{2, 50})
	sh.binSuffixes.addSuffix("Ei", bePair{2, 60})
	// Don't emit an error when trying to produce
	// a suffix for 2^0.
	sh.decSuffixes.addSuffix("", bePair{2, 0})
    // CPU计算
	sh.decSuffixes.addSuffix("n", bePair{10, -9})
	sh.decSuffixes.addSuffix("u", bePair{10, -6})
	sh.decSuffixes.addSuffix("m", bePair{10, -3})
	sh.decSuffixes.addSuffix("", bePair{10, 0})
	sh.decSuffixes.addSuffix("k", bePair{10, 3})
	sh.decSuffixes.addSuffix("M", bePair{10, 6})
	sh.decSuffixes.addSuffix("G", bePair{10, 9})
	sh.decSuffixes.addSuffix("T", bePair{10, 12})
	sh.decSuffixes.addSuffix("P", bePair{10, 15})
	sh.decSuffixes.addSuffix("E", bePair{10, 18})
 
	return fastLookup{sh}
}
    
官方文档源码：
  https://github.com/kubernetes/apimachinery/blob/564e0900f0fdabbdc81495b88ce0ca03a62f0af3/pkg/api/resource/suffix.go#L88    

具体使用使用可以参考下面文档

https://blog.youkuaiyun.com/fly910905/article/details/102932107?utm_term=cpum%E5%8D%95%E4%BD%8D&utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2~all~sobaiduweb~default-0-102932107&spm=3001.4430