查看“︁Efs”︁的源代码

=efs=
 3. 检查是否用了 Infrequent Access（IA）存储类

    如果你启用了生命周期策略，小文件会被移到 IA 存储类，首次访问延迟高达几十毫秒，会加剧 IO wait 

    。

    建议关闭 IA 或强制把热点文件留在 Standard 存储类
https://www.amazonaws.cn/efs/faq/
=references=

https://docs.aws.amazon.com/zh_cn/efs/latest/ug/whatisefs.html