用手机录音，录一晚上

可能一条命令回显的耗时不仅需要一个 RTT

尝试抓了下包，发现一条命令执行的时候会有好几个 TCP 包

ssh.exec_command('ls -l')
ssh.exec_command('ls -l')
ssh.exec_command('ls -l')
ssh.exec_command('ls -l')
ssh.exec_command('ls -l')

#方便抓包，设置 sleep
print("wating...")
time.sleep(5)
t1=time.time()
ssh.exec_command('echo dick')
t2=time.time()
print(t2-t1)
time.sleep(5)

ssh.close()

输出 0.358 秒，服务器 ping 延迟在 180ms 左右

https://i.imgur.com/9bqG8Zk.png

可以试试 tcping

@xiaozecn 城市往农村方向发展，与其说是农村，不如说是别墅群

如果城市能往农村方向发展就好了，但感觉耕地面积很吃紧。理想上人人都能住二层楼，同时又保持人口密度和基础设施完善

@FakerLeung 跟早年外卖大战一个操作，亏本促销，抢占市场，撑得撑死，饿的饿死

@xiyuesaves 230 的这种应该是拉大户入坑的，续费火一千多，但估计没拉住多少，也没这种优惠了

@airqj 2022 年春季优惠，开新号就可以买。估计薅惨了，今年没这种优惠了，检测新号是否同一实名

到最后还是用境外小厂商服务器（

（ 10 元附带 500G 硬盘

230 块钱 4 核 8G10M 挺好用 的，可惜正价用不起

有可能是登录上去后，服务器反向 dns 查询登录者的 ip ，但访问不了外网，导致长时间卡住
http://hazirguo.github.io/articles/2018/ssh_login_hang_reasons.html

（想问下问什么通话概率是等概的

河东一程序员因开发自动拨号软件恶意骚扰同城用户，次数高达 100 万次，已因破坏计算机系统罪引渡

而且流量可能不小，被当成了 PCDN ，最近严查

可能是检测到宽带里走了 HTTP/HTTPS 服务端响应的流量

走 wireguard 之类的 VPN 访问家里的服务吧

不愧是国内互联网公司

网上搜了下，可能是硬盘的逻辑错误，我也看不懂，等个硬盘专家回答一下

平时还是得备份重要数据，比如密钥，配置文件，代码等等
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https://superuser.com/questions/1671683/what-causes-a-filesystem-to-get-corrupted

What causes a filesystem to get corrupted?

I just went through the following: When rebooting my Ubuntu PC, I got a message that welcomed me to emergency mode. Following the instructions from another stackoverflow post, I ended up running fsck.ext4 on my root partition from a live USB. This proposed some fixes which I accepted, and since then things have been looking fine again.

However, I wonder what this whole ordeal means. I'm assuming it's not normal for things to just break, is it? Does this mean anything about my SSD drive possibly getting old and unstable? Is it something else that I can do anything about? Or is this just something that one has to go through from time to time? I haven't done anything to my system that I'm aware of that can trigger this. I install updates using apt dist-upgrade and I install new programs via apt or snap from time to time and that's about it.

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there can be all kinds of causes, including random cosmic rays or the media producing an alpha particle, that happens to impact the value of a critical bit. generally speaking file system corruption is caused by power loss during a write operation, or in a case where there are cached writes that haven't yet been written to disk. FS checking tools like fsck attempt to reconcile inconsistencies between the file system metadata and the actual contents of the disk, and while far from perfect, can help you when FS metadata has become damaged. can't do much for cached or incomplete writes though.

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https://en.wikipedia.org/wiki/Soft_error