Avoid repeated call of write(2) system call #4
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TCPSocket#write results in write(2) system call by default, and is heavy. One such call per a message is mandary, though anything more than that are waste of time. Lets just let the socket buffer things.
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Looking at
strace(1)outputs, I found thoseTCPSocket#writes immediately resulted inwrite(2)system calls each time, which are HEAVY.