19 tcp_comp_sack_delay_ns -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_comp_sack_nr -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_comp_sack_slack_ns -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_congestion_control -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_dsack ...
8:时间戳(10字节,TCP Timestamps Option,TSopt) 5:SACK实际工作的选项。 4:sackOK—发送端支持并同意使用SACK选项。 3:窗口扩大因子(3字节,wscale),取值0-14。用来把TCP的窗口的值左移的位数,使窗口值乘倍。只能出现在同步报文段中,否则将被忽略。这是因为现在的TCP接收数据缓冲区(接收窗口)的长度通常大于65...
打开FACK拥塞避免和快速重传功能。(注意,当tcp_sack设置为0的时候,这个值即使设置为1也无效) tcp_dsack:BOOLEAN 缺省值为1 允许TCP发送"两个完全相同"的SACK。 tcp_ecn:BOOLEAN 缺省值为0 打开TCP的直接拥塞通告功能。 tcp_reordering:INTEGER 默认值是3 TCP流中重排序的数据报最大数量 。 (一般有看到推荐把这...
(2013): Performance comparison between TCP sack and TCP Vegas using NS-2 Simulator. Int. J. Comput. Applic., 68: 49-52.H. Dave, V. Gupta, & P. Dihulia, "Performance comparison between TCP sack and TCP Vegas using NS-2 Simulator," International Journal of Computer Application, 68(11...
{ nskb = skb_copy(skb, GFP_ATOMIC); } tcp_skb_tsorted_restore(skb); if (!nskb) return -ENOMEM; INIT_LIST_HEAD(&nskb->tcp_tsorted_anchor); tcp_highest_sack_replace(sk, skb, nskb); tcp_rtx_queue_unlink_and_free(skb, sk); __skb_header_release(nskb); tcp...
2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * Implementation of the Transmission Control Protocol(TCP). 7 * 8 * ...
1.1 TCP Performance TCP performance depends not upon the transfer rate itself, but rather upon the product of the transfer rate and the round-trip delay. This "bandwidth*delay product" measures the amount of data that would "fill the pipe"; it is the buffer space required at sender and ...
但是当大于3次后,不在立即重传ack,而是按照一定的周期性决定sack重传(这也是为了网络和cpu的性能tcp_comp_sack_delay_ns和rtt/20) 需要的ack的段大于sysctl_tcp_comp_sack_nr的次数 。 rfc5681介绍了重复ack A TCP receiver SHOULD send an immediate duplicate ACK when an out- ...
Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the Linux kernel and other low-level projects in C/C++ (bootloaders, C libraries...)
19 tcp_comp_sack_delay_ns -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_comp_sack_nr -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_comp_sack_slack_ns -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_congestion_control -rw-r--r-- 1 root root 0 Mar 26 18:19 tcp_dsack ...