创建一个:
$ time dd if=/dev/zero of=test bs=128k count=1512 oflag=dsync
用tcpdump以文本形式查看报文内容:
$ sudo tcpdump -p -i eth0 -s 0 -l -w - dst port 6666 and dst host l-mem1.f.cn1.qunar.com | strings | grep set
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December 21, 2015 02:49
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咳咳，我看见了个机器名～