Hi, I am working on the docker checkpoint/restore use CRIU, and the time consuming is the key point we concerned.
I found a strange phenomenon that the created socket need additional at least 0.5 seconds to reconnect after the docker restore done. But if I create a new socket after restoring the docker , it will connect to the peer immediately. No matter the connection uses TCP or UDP. >From the CRIU source code, I found that it will create a new socket with SO_REUSEADDR, and change the original fd to this new one. but I have no idea that why it need more time to recovery. Could someone help me to explain it or give me some points? Thanks very much! -- Best Regards Cui Yanbao | 崔言宝 -- 龍生玖天,豈能安於凡塵!
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