我使用2.6.9-89.ELsmp#1 SMP Mon Jun 22 12:31:33 EDT 2009 x86_64 x86_64 x86_64 GNU / Linux 我想控制tcp延迟确认时间。 但是,我找不到tcp_delack_min参数。
sysctl -a | grep tcp sunrpc.tcp_slot_table_entries = 16 net.ipv4.tcp_slow_start_after_idle = 1 net.ipv4.tcp_workaround_signed_windows = 1 net.ipv4.tcp_bic_beta = 819 net.ipv4.tcp_tso_win_divisor = 8 net.ipv4.tcp_moderate_rcvbuf = 1 net.ipv4.tcp_bic_low_window = 14 net.ipv4.tcp_bic_fast_convergence = 1 net.ipv4.tcp_bic = 1 net.ipv4.tcp_vegas_gamma = 2 net.ipv4.tcp_vegas_beta = 6 net.ipv4.tcp_vegas_alpha = 2 net.ipv4.tcp_vegas_cong_avoid = 0 net.ipv4.tcp_westwood = 0 net.ipv4.tcp_no_metrics_save = 0 net.ipv4.tcp_low_latency = 0 net.ipv4.tcp_frto = 0 net.ipv4.tcp_tw_reuse = 0 net.ipv4.tcp_adv_win_scale = 2 net.ipv4.tcp_app_win = 31 net.ipv4.tcp_rmem = 4096 87380 174760 net.ipv4.tcp_wmem = 4096 16384 131072 net.ipv4.tcp_mem = 786432 1048576 1572864 net.ipv4.tcp_dsack = 1 net.ipv4.tcp_ecn = 0 net.ipv4.tcp_reordering = 3 net.ipv4.tcp_fack = 1 net.ipv4.tcp_orphan_retries = 0 net.ipv4.tcp_max_syn_backlog = 10000 net.ipv4.tcp_rfc1337 = 0 net.ipv4.tcp_stdurg = 0 net.ipv4.tcp_abort_on_overflow = 0 net.ipv4.tcp_tw_recycle = 0 net.ipv4.tcp_syncookies = 0 net.ipv4.tcp_fin_timeout = 60 net.ipv4.tcp_retries2 = 15 net.ipv4.tcp_retries1 = 3 net.ipv4.tcp_keepalive_intvl = 75 net.ipv4.tcp_keepalive_probes = 9 net.ipv4.tcp_keepalive_time = 7200 net.ipv4.tcp_max_tw_buckets = 180000 net.ipv4.tcp_max_orphans = 262144 net.ipv4.tcp_synack_retries = 5 net.ipv4.tcp_syn_retries = 5 net.ipv4.tcp_retrans_collapse = 1 net.ipv4.tcp_sack = 1 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_timestamps = 1
其中是tcp_delack_min ???
答案 0 :(得分:2)
在内核源代码中:
./ include / net / tcp.h:#define TCP_DELACK_MAX((无符号)(HZ / 5))
之前延迟的最长时间
/ *发送ACK * /./ include / net / tcp.h:#define TCP_DELACK_MIN((无符号)(HZ / 25))
之前延迟的最短时间
/ *在发送ACK * /
答案 1 :(得分:2)
它仅适用于某些 - 主要是实时聚焦的 - 内核分支。许多与此内核参数相关的文档都是指某些RHEL机器将使用的MRG(Messaging Realtime-Grid)内核变体。