我正在使用简单锁定TCP套接字向远程服务器发送消息,但问题在于每个消息发送所需的时间差异很大。
以下是我得到的一些示例:
以下是我得到的一些示例:
Bytes Sent: 217, Time: 34.3336 usec
Bytes Sent: 217, Time: 9.9107 usec
Bytes Sent: 226, Time: 20.1754 usec
Bytes Sent: 226, Time: 38.2271 usec
Bytes Sent: 217, Time: 33.6257 usec
Bytes Sent: 217, Time: 12.7424 usec
Bytes Sent: 217, Time: 21.5912 usec
Bytes Sent: 217, Time: 31.1480 usec
Bytes Sent: 218, Time: 28.3164 usec
Bytes Sent: 218, Time: 13.0963 usec
Bytes Sent: 218, Time: 82.8254 usec
Bytes Sent: 218, Time: 13.0963 usec
Bytes Sent: 227, Time: 30.7941 usec
Bytes Sent: 218, Time: 27.9624 usec
Bytes Sent: 216, Time: 2.1237 usec
Bytes Sent: 218, Time: 12.3884 usec
Bytes Sent: 227, Time: 31.1480 usec
Bytes Sent: 227, Time: 88.4887 usec
Bytes Sent: 218, Time: 93.0901 usec
Bytes Sent: 218, Time: 7.7870 usec
Bytes Sent: 218, Time: 28.3164 usec
Bytes Sent: 227, Time: 89.5505 usec
Bytes Sent: 218, Time: 84.2412 usec
Bytes Sent: 218, Time: 13.8042 usec
Bytes Sent: 227, Time: 99.4612 usec
Bytes Sent: 218, Time: 86.0110 usec
Bytes Sent: 218, Time: 12.3884 usec
Bytes Sent: 218, Time: 87.7807 usec
Bytes Sent: 216, Time: 3.5395 usec
Bytes Sent: 218, Time: 4.6014 usec
Bytes Sent: 218, Time: 36.1034 usec
Bytes Sent: 218, Time: 14.8661 usec
Bytes Sent: 218, Time: 24.0689 usec
Bytes Sent: 218, Time: 18.0517 usec
Bytes Sent: 227, Time: 24.4229 usec
有人知道为什么会发生这种情况吗?为什么一个消息需要3微秒才能被发送,而另一个消息需要80微秒?
是否有任何方法可以修复这个问题?
注意:我想要实现的主要目标是尽可能快地发送每条消息。 我不需要异步套接字,至少在它们工作更快之前不需要。
关于我所做的一些其他细节:
C ++,Visual Studio 2013
我如何打开:
...
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
...
ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype, ptr->ai_protocol);
...
如何发送和计算时间:
...
LARGE_INTEGER cT;
QueryPerformanceCounter(&cT);
long long dT = cT.QuadPart;
iBytesSent = send(ConnectSocket, msgFinal, msgFinalLen, 0);
QueryPerformanceCounter(&cT);
dT = cT.QuadPart - dT;
...
此外,我正在从另一个线程监听此套接字,我不知道这是否会影响发送:
iResult = recv(ConnectSocket, recvbuf, DEFAULT_BUFLEN, 0);
send
操作需要更长的时间。设置TCP_NODELAY将使每个发送操作都发送一个数据包。 - David Schwartz