为什么站点突然出现输入输出(I/O)在一段时间内很慢
例如：平常批量上传图片都是挺快的。今天突然上传中出现输入输出的问题。这都是什么方面的问题造成的？
回复内容：
例如：平常批量上传图片都是挺快的。今天突然上传中出现输入输出的问题。这都是什么方面的问题造成的？
0、F12确定是上传的问题，SFTP/FTP/iftop等试试测试网络畅通性。
1、iotop查看是否确实是占用大量的磁盘IO。
2、htop查看是否是占用大量的CPU。
3、dmesg查看是否是硬件问题（是否有大量的错误日志）。
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