From 654e1a1335f10cf9af83a0c6e0a47bcaff9c62a4 Mon Sep 17 00:00:00 2001
From: "Ycarus (Yannick Chabanois)" <ycarus@zugaina.org>
Date: Wed, 31 Jul 2024 11:02:21 +0000
Subject: [PATCH] Change in kernel settings

---
 shadowsocks.6.1.conf | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/shadowsocks.6.1.conf b/shadowsocks.6.1.conf
index d3cd55a..7828850 100644
--- a/shadowsocks.6.1.conf
+++ b/shadowsocks.6.1.conf
@@ -2,18 +2,18 @@
 # max open files
 fs.file-max = 512000
 # max read buffer
-net.core.rmem_max = 16777216
+net.core.rmem_max = 7500000
 # max write buffer
-net.core.wmem_max = 16777216
+net.core.wmem_max = 7500000
 #net.core.optmem_max = 33554432
 # default read buffer
 #net.core.rmem_default = 16777216
 # default write buffer
 #net.core.wmem_default = 16777216
 # max processor input queue
-net.core.netdev_max_backlog = 4096
+net.core.netdev_max_backlog = 10000
 # max backlog
-net.core.somaxconn = 4096
+net.core.somaxconn = 16384
 
 # resist SYN flood attacks
 net.ipv4.tcp_syncookies = 1
@@ -30,24 +30,27 @@ net.ipv4.tcp_keepalive_time = 7200
 # outbound port range
 net.ipv4.ip_local_port_range = 9999 65000
 # max SYN backlog
-net.ipv4.tcp_max_syn_backlog = 10240
+net.ipv4.tcp_max_syn_backlog = 4096
 # max timewait sockets held by system simultaneously
-net.ipv4.tcp_max_tw_buckets = 10000
+net.ipv4.tcp_max_tw_buckets = 16384
 # turn on TCP Fast Open on both client and server side
 net.ipv4.tcp_fastopen = 3
 # TCP buffer
-net.ipv4.tcp_mem = 1638400 1638400 1638400
+net.ipv4.tcp_mem = 409600 819200 1638400
 # UDP buffer
-#net.ipv4.udp_mem = 4096 87380 16777216
+net.ipv4.udp_mem = 4096 87380 16777216
 # TCP receive buffer
 net.ipv4.tcp_rmem = 4096 87380 16777216
 # TCP write buffer
 net.ipv4.tcp_wmem = 4096 87380 16777216
 # turn on path MTU discovery
 net.ipv4.tcp_mtu_probing = 0
+# 1/8 * available memory in receive buffer
+net.ipv4.tcp_adv_win_scale=-3
+# limits the size of unsent bytes in the write queue
+net.ipv4.tcp_notsent_lowat = 131072
 
 # for low-latency network, use cubic instead
-net.ipv4.tcp_congestion_control = bbr
 net.core.default_qdisc = fq
 # Default conntrack is too small
 net.netfilter.nf_conntrack_max = 524288
@@ -58,10 +61,17 @@ net.ipv4.conf.all.log_martians = 0
 net.ipv4.conf.default.log_martians = 0
 
 # MPTCP settings
+net.ipv4.tcp_ecn = 2
 net.mptcp.checksum_enabled = 0
 net.mptcp.add_addr_timeout = 120
 net.mptcp.allow_join_initial_addr_port = 1
 net.mptcp.enabled = 1
 net.mptcp.pm_type = 0
 net.mptcp.stale_loss_cnt = 4
-net.ipv4.tcp_ecn = 2
+net.mptcp.mptcp_checksum=0
+net.mptcp.mptcp_path_manager=fullmesh
+net.mptcp.mptcp_scheduler=mptcp_burst
+net.mptcp.mptcp_syn_retries=4
+net.mptcp.mptcp_version=1
+net.mptcp.checksum_enabled=0
+net.ipv4.tcp_congestion_control=bbr
\ No newline at end of file