#!/bin/sh
## CPU
function CPU_Tweaking {
normal_1; echo "Optimizing CPU"; normal_2
apt-get -qqy install tuned
warn_2
mkdir /etc/tuned/profile
touch /etc/tuned/profile/tuned.conf
cat << EOF >/etc/tuned/profile/tuned.conf
[main]
#CPU & Scheduler Optimization
[cpu]
governor=performance
energy_perf_bias=performance
min_perf_pct=100
[disk]
readahead=4096
[bootloader]
cmdline=skew_tick=1
EOF
tuned-adm profile profile
}
## Network
#NIC Config
function NIC_Tweaking {
normal_1; echo "Optimizing NIC Configuration"
warn_1; echo "Some Configurations might not be supported by the NIC"; warn_2
interface=$(ip -o -4 route show to default | awk '{print $5}')
ethtool -G $interface rx 1024
sleep 1
ethtool -G $interface tx 2048
sleep 1
ethtool -K $interface tso off gso off
sleep 1
}
function Network_Other_Tweaking {
normal_1; echo "Doing other Network Tweaking"; warn_2
#Other 1
apt-get -qqy install net-tools
ifconfig $interface txqueuelen 10000
sleep 1
#Other 2
iproute=$(ip -o -4 route show to default)
ip route change $iproute initcwnd 25 initrwnd 25
}
## Drive
#Scheduler
function Scheduler_Tweaking {
normal_1; echo "Changing I/O Scheduler"; warn_2
i=1
drive=()
disk=$(lsblk -nd --output NAME)
diskno=$(echo $disk | awk '{print NF}')
while [ $i -le $diskno ]
do
device=$(echo $disk | awk -v i=$i '{print $i}')
drive+=($device)
i=$(( $i + 1 ))
done
i=1
x=0
disktype=$(cat /sys/block/sda/queue/rotational)
if [ "${disktype}" == 0 ]; then
while [ $i -le $diskno ]
do
diskname=$(eval echo ${drive["$x"]})
echo kyber > /sys/block/$diskname/queue/scheduler
i=$(( $i + 1 ))
x=$(( $x + 1 ))
done
else
while [ $i -le $diskno ]
do
diskname=$(eval echo ${drive["$x"]})
echo mq-deadline > /sys/block/$diskname/queue/scheduler
i=$(( $i + 1 ))
x=$(( $x + 1 ))
done
fi
}
## File Open Limit
function file_open_limit_Tweaking {
normal_1; echo "Configuring File Open Limit"; warn_2
cat << EOF >>/etc/security/limits.conf
## Hard limit for max opened files
$username hard nofile 1048576
## Soft limit for max opened files
$username soft nofile 1048576
EOF
}
## sysctl.conf
function kernel_Tweaking {
normal_1; echo "Configuring sysctl.conf"; warn_2
cat << EOF >/etc/sysctl.conf
###/proc/sys/kernel/ Variables:
##https://www.kernel.org/doc/Documentation/admin-guide/sysctl/kernel.rst
# Allow for more PIDs
kernel.pid_max = 4194303
# Maximum size of an IPC queue
kernel.msgmnb = 65536
# maximum size of an IPC message
kernel.msgmax = 65536
## Process Scheduler Optimization
kernel.sched_migration_cost_ns = 5000000
kernel.sched_autogroup_enabled = 0
kernel.sched_min_granularity_ns = 10000000
kernel.sched_wakeup_granularity_ns = 15000000
###/proc/sys/fs/
##https://www.kernel.org/doc/Documentation/admin-guide/sysctl/fs.rst
# Maximum number of file-handles that the Linux kernel will allocate
fs.file-max = 1048576
# Maximum number of file-handles a process can allocate
fs.nr_open = 1048576
###/proc/sys/vm Variables:
##https://www.kernel.org/doc/Documentation/admin-guide/sysctl/vm.rst
# Percentage of available system memory which when dirty then system can start writing data to the disks
# NOTE: The total available memory is not equal to total system memory
vm.dirty_background_ratio = 5
# Percentage of available system memory which when dirty, the process doing writes would block and write out dirty pages to the disks
vm.dirty_ratio = 30
# Define when dirty inode is old enough to be eligible for writeback by the kernel flusher threads & interval to wakeup dirtytime_writeback thread
vm.dirty_expire_centisecs = 1000
# Period between each wake up and write old data out to disk
vm.dirty_writeback_centisecs = 100
# Reduce swapping and keep memory pages in physical memory
vm.swappiness = 10
# Approaches to reclaim memory when a zone runs out of memory
# Disabled on workload that benefit from having their data cached
# Enable on workload that is partitioned such that each partition fits within a NUMA node and that accessing remote memory would cause a measurable performance reduction
# Walkserver enables it
# vm.zone_reclaim_mode = 1
###/proc/sys/net/core - Network core options:
##https://www.kernel.org/doc/Documentation/admin-guide/sysctl/net.rst
# NOTE: Difference in polling and interrupt
# -Interrupt: Interrupt is a hardware mechanism in which, the device notices the CPU that it requires its attention./
# Interrupt can take place at any time. So when CPU gets an interrupt signal trough the indication interrupt-request line,/
# CPU stops the current process and respond to the interrupt by passing the control to interrupt handler which services device.
# -Polling: In polling is not a hardware mechanism, its a protocol in which CPU steadily checks whether the device needs attention./
# Wherever device tells process unit that it desires hardware processing, #in polling process unit keeps asking the I/O device whether or not it desires CPU processing./
# The CPU ceaselessly check every and each device hooked up thereto for sleuthing whether or not any device desires hardware attention.
# The Linux kernel uses the interrupt-driven mode by default and only switches to polling mode when the flow of incoming packets exceeds "net.core.dev_weight" number of data frames
# The maximum number of packets that kernel can handle on a NAPI interrupt, it's a Per-CPU variable
#net.core.dev_weight = 64
# Scales the maximum number of packets that can be processed during a RX softirq cycle. Calculation is based on dev_weight (dev_weight * dev_weight_rx_bias)
#net.core.dev_weight_rx_bias = 1
# Scales the maximum number of packets that can be processed during a TX softirq cycle. Calculation is based on dev_weight (dev_weight * dev_weight_tx_bias)
#net.core.dev_weight_tx_bias = 1
# NOTE: If the second column of "cat /proc/net/softnet_stat" is huge, there are frame drops and it might be wise to increase the value of net.core.netdev_max_backlog/
#If the third column increases, there are SoftIRQ Misses and it might be wise to increase either or both net.core.netdev_budget and net.core.netdev_budget_usecs
# Maximum number of packets taken from all interfaces in one polling cycle (NAPI poll).
net.core.netdev_budget = 50000
# Maximum number of microseconds in one polling cycle (NAPI poll).
# NOTE: Could reduce if you have a CPU with high single core performance, NIC that supports RSS
# NOTE: Setting a high number might cause CPU to stall and end in poor overall performance
net.core.netdev_budget_usecs = 8000
# Maximum number of packets, queued on the INPUT side, when the interface receives packets faster than kernel can process them
net.core.netdev_max_backlog = 100000
# Low latency busy poll timeout for socket reads
# NOTE: Not supported by most NIC
#net.core.busy_read=50
# Low latency busy poll timeout for poll and select
# NOTE: Not supported by most NIC
#net.core.busy_poll=50
# Receive socket buffer size
net.core.rmem_default = 16777216
net.core.rmem_max = 67108864
# Send socket buffer size
net.core.wmem_default = 16777216
net.core.wmem_max = 67108864
# Maximum ancillary buffer size allowed per socket
net.core.optmem_max = 4194304
###/proc/sys/net/ipv4/* Variables:
##https://www.kernel.org/doc/Documentation/networking/ip-sysctl.rst
## Routing Settings
# Time, in seconds, that cached PMTU information is kept
net.ipv4.route.mtu_expires = 1800
# Lowest possible mss setting, actuall advertised MSS depends on the first hop route MTU
net.ipv4.route.min_adv_mss = 536
# Set PMTU to this value if fragmentation-required ICMP is received for that destination
# NOTE: Only necessary if "net.ipv4.ip_no_pmtu_disc" is set to mode 1
#net.ipv4.route.min_pmtu = 1500
## IP
# System IP port limits
net.ipv4.ip_local_port_range = 1024 65535
# Allow Path MTU Discovery
net.ipv4.ip_no_pmtu_disc = 0
## ARP table settings
# The maximum number of bytes which may be used by packets queued for each unresolved address by other network layers
net.ipv4.neigh.default.unres_qlen_bytes = 16777216
# The maximum number of packets which may be queued for each unresolved address by other network layers
# NOTE: Deprecated in Linux 3.3 : use unres_qlen_bytes instead
#net.ipv4.neigh.default.unres_qlen = 1024
## TCP variables
# Maximum queue length of completely established sockets waiting to be accepted
net.core.somaxconn = 500000
#Maximum queue length of incomplete sockets i.e. half-open connection
#NOTE: THis value should not be above "net.core.somaxconn", since that is also a hard open limit of maximum queue length of incomplete sockets/
#Kernel will take the lower one out of two as the maximum queue length of incomplete sockets
net.ipv4.tcp_max_syn_backlog = 500000
# Recover and handle all requests instead of resetting them when system is overflowed with a burst of new connection attempts
net.ipv4.tcp_abort_on_overflow = 0
# Maximal number of TCP sockets not attached to any user file handle (i.e. orphaned connections), held by system.
# NOTE: each orphan eats up to ~64K of unswappable memory
net.ipv4.tcp_max_orphans = 262144
# Maximal number of time-wait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 10000
# Enable Path MTU Discovery, and use initial MSS of tcp_base_mss
net.ipv4.tcp_mtu_probing = 2
# Starting MSS used in Path MTU discovery
net.ipv4.tcp_base_mss = 1460
# Minimum MSS used in connection, cap it to this value even if advertised ADVMSS option is even lower
net.ipv4.tcp_min_snd_mss = 536
# Enable select acknowledgments
net.ipv4.tcp_sack = 1
# Send SACK more frequently
net.ipv4.tcp_comp_sack_delay_ns = 2500000
# Reduce SACK that can be compressed
net.ipv4.tcp_comp_sack_nr = 10
# Allows TCP to send "duplicate" SACKs
net.ipv4.tcp_dsack = 1
# Enable Early Retransmit. ER lowers the threshold for triggering fast retransmit when the amount of outstanding data is small and when no previously unsent data can be transmitted
# Default Value
#net.ipv4.tcp_early_retrans = 3
# Disable ECN totally
net.ipv4.tcp_ecn = 0
# Enable Forward Acknowledgment
# NOTE: This is a legacy option, it has no effect anymore
# net.ipv4.tcp_fack = 1
# TCP buffer size
# Values are measured in memory pages. Size of memory pages can be found by "getconf PAGESIZE". Normally it is 4096 bytes
# Vector of 3 INTEGERs: min, pressure, max
# min: below this number of pages TCP is not bothered about its
# memory appetite.
#
# pressure: when amount of memory allocated by TCP exceeds this number
# of pages, TCP moderates its memory consumption and enters memory
# pressure mode, which is exited when memory consumption falls
# under "min".
#
# max: number of pages allowed for queuing by all TCP sockets
net.ipv4.tcp_mem = 262144 1572864 2097152
# TCP sockets receive buffer
# Vector of 3 INTEGERs: min, default, max
# min: Minimal size of receive buffer used by TCP sockets.
# It is guaranteed to each TCP socket, even under moderate memory
# pressure.
#
# default: initial size of receive buffer used by TCP sockets.
# This value overrides net.core.rmem_default used by other protocols.
#
# max: maximal size of receive buffer allowed for automatically
# selected receiver buffers for TCP socket. This value does not override
# net.core.rmem_max. Calling setsockopt() with SO_RCVBUF disables
# automatic tuning of that socket's receive buffer size, in which
# case this value is ignored.
net.ipv4.tcp_rmem = 4194304 16777216 67108864
# Disable receive buffer auto-tuning
net.ipv4.tcp_moderate_rcvbuf = 0
# Distribution of socket receive buffer space between TCP window size(this is the size of the receive window advertised to the other end), and application buffer/
#The overhead (application buffer) is counted as bytes/2^tcp_adv_win_scale i.e. Setting this 2 would mean we use 1/4 of socket buffer space as overhead
# NOTE: Overhead reduces the effective window size, which in turn reduces the maximum possible data in flight which is window size*RTT
# NOTE: Overhead helps isolating the network from scheduling and application latencies
net.ipv4.tcp_adv_win_scale = 2
# Max reserved byte of TCP window for application buffer. The value will be between window/2^tcp_app_win and mss
# See "https://www.programmersought.com/article/75001203063/" for more detail about tcp_app_win & tcp_adv_win_scale
# NOTE: This application buffer is different from the one assigned by tcp_adv_win_scale
# Default
#net.ipv4.tcp_app_win = 31
# TCP sockets send buffer
# Vector of 3 INTEGERs: min, default, max
# min: Amount of memory reserved for send buffers for TCP sockets.
# Each TCP socket has rights to use it due to fact of its birth.
#
# default: initial size of send buffer used by TCP sockets. This
# value overrides net.core.wmem_default used by other protocols.
# It is usually lower than net.core.wmem_default.
#
# max: Maximal amount of memory allowed for automatically tuned
# send buffers for TCP sockets. This value does not override
# net.core.wmem_max. Calling setsockopt() with SO_SNDBUF disables
# automatic tuning of that socket's send buffer size, in which case
# this value is ignored.
net.ipv4.tcp_wmem = 4194304 16777216 67108864
# Reordering level of packets in a TCP stream
# NOTE: Reordering is costly but it happens quite a lot. Instead of declaring packet lost and requiring retransmit, try harder to reorder first
# Initial reordering level of packets in a TCP stream. TCP stack can then dynamically adjust flow reordering level between this initial value and tcp_max_reordering
net.ipv4.tcp_reordering = 10
# Maximal reordering level of packets in a TCP stream
net.ipv4.tcp_max_reordering = 600
# Number of times SYNACKs for a passive TCP connection attempt will be retransmitted
net.ipv4.tcp_synack_retries = 10
# Number of times initial SYNs for an active TCP connection attempt will be retransmitted
net.ipv4.tcp_syn_retries = 7
# In seconds, time default value for connections to keep alive
net.ipv4.tcp_keepalive_time = 7200
# How many keepalive probes TCP sends out, until it decides that the connection is broken
net.ipv4.tcp_keepalive_probes = 15
# In seconds, how frequently the probes are send out
net.ipv4.tcp_keepalive_intvl = 60
# Number of retries before killing a TCP connection
# Time, after which TCP decides, that something is wrong due to unacknowledged RTO retransmissions, and reports this suspicion to the network layer.
net.ipv4.tcp_retries1 = 3
# Time, after which TCP decides to timeout the TCP connection, when RTO retransmissions remain unacknowledged
net.ipv4.tcp_retries2 = 10
# How many times to retry to kill connections on the other side before killing it on our own side
net.ipv4.tcp_orphan_retries = 2
#Disable TCP auto corking, as it needlessly increasing latency when the application doesn't expect to send more data
net.ipv4.tcp_autocorking = 0
# Disables Forward RTO-Recovery, since we are not operating on a lossy wireless network
net.ipv4.tcp_frto = 0
# Protect Against TCP TIME-WAIT Assassination
net.ipv4.tcp_rfc1337 = 1
# Avoid falling back to slow start after a connection goes idle
net.ipv4.tcp_slow_start_after_idle = 0
# Enable both client support & server support of TCP Fast Open
net.ipv4.tcp_fastopen = 3
# Disable timestamps
net.ipv4.tcp_timestamps = 0
# Keep sockets in the state FIN-WAIT-2 for ultra short period if we were the one closing the socket, because this gives us no benefit and eats up memory
net.ipv4.tcp_fin_timeout = 5
# Do not cache metrics on closing connections
net.ipv4.tcp_no_metrics_save = 1
# Enable reuse of TIME-WAIT sockets for new connections
net.ipv4.tcp_tw_reuse = 1
# Allows the use of a large window (> 64 kB) on a TCP connection
net.ipv4.tcp_window_scaling = 1
# Set maximum window size to MAX_TCP_WINDOW i.e. 32767 in times there is no received window scaling option
net.ipv4.tcp_workaround_signed_windows = 1
# The maximum amount of unsent bytes in TCP socket write queue
net.ipv4.tcp_notsent_lowat = 983040
# Controls the amount of data in the Qdisc queue or device queue
net.ipv4.tcp_limit_output_bytes = 3276800
# Controls a per TCP socket cache of one socket buffer
# Use Huge amount of memory
#net.ipv4.tcp_rx_skb_cache = 1
# Congestion Control
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
EOF
sysctl -p > /dev/null
}
## BBR
function Tweaked_BBR {
## Update Kernel
normal_1; echo "Updating Kernel"; normal_2
distro_codename="$(source /etc/os-release && printf "%s" "${VERSION_CODENAME}")"
if [[ $distro_codename = buster ]]; then
echo "deb http://deb.debian.org/debian buster-backports main" | sudo tee -a /etc/apt/sources.list
apt-get -qqy update && apt -qqyt buster-backports upgrade
elif [[ $distro_codename = bullseye ]]; then
echo "deb http://deb.debian.org/debian bullseye-backports main" | sudo tee -a /etc/apt/sources.list
apt-get -qqy update && apt -qqyt bullseye-backports upgrade
fi
wget http://depot.gggu.eu.org/bbrx/Seedbox-Components/main/Miscellaneous/BBR/BBR.sh && chmod +x BBR.sh
## Install tweaked BBR automatically on reboot
cat << EOF > /etc/systemd/system/bbrinstall.service
[Unit]
Description=BBRinstall
After=network.target
[Service]
Type=oneshot
ExecStart=/root/BBR.sh
RemainAfterExit=true
[Install]
WantedBy=multi-user.target
EOF
systemctl enable bbrinstall.service && bbrx=1
}
## Deluge
#Deluge Libtorrent Config
function Deluge_libtorrent {
normal_1; echo "Configuring Deluge Libtorrent Settings"; warn_2
systemctl stop deluged@$username
cat << EOF >/home/$username/.config/deluge/ltconfig.conf
{
"file": 1,
"format": 1
}{
"apply_on_start": true,
"settings": {
"default_cache_min_age": 10,
"connection_speed": 500,
"connections_limit": 500000,
"guided_read_cache": true,
"max_rejects": 100,
"inactivity_timeout": 120,
"active_seeds": -1,
"max_failcount": 20,
"allowed_fast_set_size": 0,
"max_allowed_in_request_queue": 10000,
"enable_incoming_utp": false,
"unchoke_slots_limit": -1,
"peer_timeout": 120,
"peer_connect_timeout": 30,
"handshake_timeout": 30,
"request_timeout": 5,
"allow_multiple_connections_per_ip": true,
"use_parole_mode": false,
"piece_timeout": 5,
"tick_interval": 100,
"active_limit": -1,
"connect_seed_every_n_download": 50,
"file_pool_size": 5000,
"cache_expiry": 300,
"seed_choking_algorithm": 1,
"max_out_request_queue": 10000,
"send_buffer_watermark": 10485760,
"send_buffer_watermark_factor": 200,
"active_tracker_limit": -1,
"send_buffer_low_watermark": 3145728,
"mixed_mode_algorithm": 0,
"max_queued_disk_bytes": 10485760,
"min_reconnect_time": 2,
"aio_threads": 4,
"write_cache_line_size": 256,
"torrent_connect_boost": 100,
"listen_queue_size": 3000,
"cache_buffer_chunk_size": 256,
"suggest_mode": 1,
"request_queue_time": 5,
"strict_end_game_mode": false,
"use_disk_cache_pool": true,
"predictive_piece_announce": 10,
"prefer_rc4": false,
"whole_pieces_threshold": 5,
"read_cache_line_size": 128,
"initial_picker_threshold": 10,
"enable_outgoing_utp": false,
"cache_size": $Cache1,
"low_prio_disk": false
}
}
EOF
systemctl start deluged@$username
}