From 471b0653a69e2ccb1fd72d51545bf07bfd05e59e Mon Sep 17 00:00:00 2001
From: bluebluesoda <300733005+bluebluesoda@users.noreply.github.com>
Date: Sun, 20 Sep 2026 07:19:13 +0000
Subject: [PATCH] chore(net): raise the TCP socket buffer max to 8 MiB

- host sysctl (20-network.sh): tcp_rmem/tcp_wmem max, rmem_max and
  wmem_max all go from 4194304 to 8388608
- image builds (50/60/70/80/90 + eol-debian11): tcp_rmem/tcp_wmem max
  bumped the same way
- autotune defaults (262144) and the min values are untouched

Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
---
 scripts/20-network.sh          | 8 ++++----
 scripts/50-image.sh            | 4 ++--
 scripts/60-rhel-image.sh       | 4 ++--
 scripts/70-opensuse-image.sh   | 4 ++--
 scripts/80-debian-dev-image.sh | 4 ++--
 scripts/90-arch-image.sh       | 4 ++--
 scripts/eol-debian11-image.sh  | 4 ++--
 7 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/scripts/20-network.sh b/scripts/20-network.sh
index e63e1f6..41d973e 100755
--- a/scripts/20-network.sh
+++ b/scripts/20-network.sh
@@ -22,10 +22,10 @@ net.ipv6.conf.default.use_tempaddr = 0
 net.core.netdev_max_backlog = 8192
 net.core.rmem_default = 262144
 net.core.wmem_default = 262144
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
-net.core.rmem_max = 4194304
-net.core.wmem_max = 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
+net.core.rmem_max = 8388608
+net.core.wmem_max = 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 EOF
diff --git a/scripts/50-image.sh b/scripts/50-image.sh
index ed2b0ac..132bc54 100755
--- a/scripts/50-image.sh
+++ b/scripts/50-image.sh
@@ -86,8 +86,8 @@ cat >> /etc/sysctl.conf <<SYSCTL
 
 # vpsmgr TCP tuning
 net.ipv4.tcp_congestion_control = bbr
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 SYSCTL
diff --git a/scripts/60-rhel-image.sh b/scripts/60-rhel-image.sh
index a1c055f..29db4e3 100755
--- a/scripts/60-rhel-image.sh
+++ b/scripts/60-rhel-image.sh
@@ -85,8 +85,8 @@ cat >> /etc/sysctl.conf <<SYSCTL
 
 # vpsmgr TCP tuning
 net.ipv4.tcp_congestion_control = bbr
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 SYSCTL
diff --git a/scripts/70-opensuse-image.sh b/scripts/70-opensuse-image.sh
index bf4ce7c..ede2761 100644
--- a/scripts/70-opensuse-image.sh
+++ b/scripts/70-opensuse-image.sh
@@ -84,8 +84,8 @@ cat >> /etc/sysctl.conf <<SYSCTL
 
 # vpsmgr TCP tuning
 net.ipv4.tcp_congestion_control = bbr
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 SYSCTL
diff --git a/scripts/80-debian-dev-image.sh b/scripts/80-debian-dev-image.sh
index 6f797bf..35e815d 100755
--- a/scripts/80-debian-dev-image.sh
+++ b/scripts/80-debian-dev-image.sh
@@ -148,8 +148,8 @@ cat >> /etc/sysctl.conf <<SYSCTL
 
 # vpsmgr TCP tuning
 net.ipv4.tcp_congestion_control = bbr
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 SYSCTL
diff --git a/scripts/90-arch-image.sh b/scripts/90-arch-image.sh
index 4418d3a..62c7a08 100755
--- a/scripts/90-arch-image.sh
+++ b/scripts/90-arch-image.sh
@@ -108,8 +108,8 @@ cat >> /etc/sysctl.conf <<SYSCTL
 
 # vpsmgr TCP tuning
 net.ipv4.tcp_congestion_control = bbr
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 SYSCTL
diff --git a/scripts/eol-debian11-image.sh b/scripts/eol-debian11-image.sh
index 42e6866..a309958 100644
--- a/scripts/eol-debian11-image.sh
+++ b/scripts/eol-debian11-image.sh
@@ -86,8 +86,8 @@ cat >> /etc/sysctl.conf <<SYSCTL
 
 # vpsmgr TCP tuning
 net.ipv4.tcp_congestion_control = bbr
-net.ipv4.tcp_rmem = 8192 262144 4194304
-net.ipv4.tcp_wmem = 4096 16384 4194304
+net.ipv4.tcp_rmem = 8192 262144 8388608
+net.ipv4.tcp_wmem = 4096 16384 8388608
 net.ipv4.tcp_window_scaling = 1
 net.ipv4.tcp_slow_start_after_idle = 0
 SYSCTL