TCP performance is strongly influenced by its congestion control algorithms that limit the amount of transmitted traffic based on the estimated network capacity and utilization. TCP is a connection-oriented pro
Transmission Control Protocol (TCP) can handle packet losses by retransmitting them when the corresponding acknowledgement (ACK) packets are not received within a certain time interval. This time interval is referred to as retransmission timeout (RTO) and setting its value is critical to reduce the...
Re: TCP packet delay 4k packets? Sounds like FDDI, not ethernet, unless you have gone jumbo. If I remember correctly, the FDDI tools to use are fddimon7, ping and pong (linkloop for fddi). Then you need to try more of a clinical test, perhaps run netstat -s before and after a tr...
* (tcp_recvmsg() will send ACK otherwise). Or...*/__tcp_select_window(sk)>= tp->rcv_wnd) ||//---我们需要更新接收窗口,也就是我们接收窗口在不断变化的期间,一般就是链路将建立没多久的时候/*We ACK each frame or...*/tcp_in_quickack_mode(sk)||---我们处于quickack状态/*We have out...
* problem is that "good" TCP's do slow start at the beginning of data * transmission. The means that until we send the first few ACK's the * sender will sit on his end and only queue most of his data, because * he can only send snd_cwnd unacked packets at any given time. For...
Due to the loss of packets, conversation becomes irritating and discontinuous. In non-real-time application, such as data transfer, this packet loss problem can be solved by using the retransmission mechanism of TCP. But with retransmission method, the lost packet will arrive very late at the ...
I Use a TAP to capture the traffic on the wire. To capture the traffic on the VM I use a second VM capturing the packets from a SPAN Port on the virtual switch. Here is a sample of a connection timeout of 0.3 sec: The PLC is sending a burst of Data. The last packet of...
TCP data cannot be transferred smoothly to Java app We can see errors in the socket buffers fromnetstat -s: Raw 123456 packets pruned from receive queue because of socket buffer overrun 234567 packets collapsed in receive queue due to low socket buffer ...
According to the results, the protocols can be categorized in three groups. This categorization is made on the basis of number of handover signaling messages exchanged. VA-TCP performs much better than other protocols. For example, for a loss probability of 0.15, the delay for LCT-based ...
Note that this blocking occurs in the RTOS, not in the MAC/hardware. Embedded RTOSs do this to minimize the size of memory buffers needed to support auto-retransmitting of TCP packets in case a packet gets lost. But the embedded system waiting for an ACK, in combination with the delayed...