- I'm not author of this script.
- http://ftp.dei.uc.pt/pub/linux/kernel/people/mcgrof/aspm/enable-aspm
- https://wireless.wiki.kernel.org/en/users/Documentation/ASPM#enabling_aspm_with_setpci
- https://github.com/Mechitworks/Linuxscripts/blob/main/H610-ASPM.bash
- https://gist.github.com/baybal/b499fc5811a7073df0c03ab8da4be904
-
Script content (backup/snapshot from 2023-11-16):
#!/bin/bash # Copyright (c) 2010-2013 Luis R. Rodriguez <mcgrof@do-not-panic.com> # # Permission to use, copy, modify, and/or distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. # ASPM Tuning script # # This script lets you enable ASPM on your devices in case your BIOS # does not have it enabled for some reason. If your BIOS does not have # it enabled it is usually for a good reason so you should only use this if # you know what you are doing. Typically you would only need to enable # ASPM manually when doing development and using a card that typically # is not present on a laptop, or using the cardbus slot. The BIOS typically # disables ASPM for foreign cards and on the cardbus slot. Check also # if you may need to do other things than what is below on your vendor # documentation. # # To use this script You will need for now to at least query your device # PCI endpoint and root complex addresses using the convention output by # lspci: [<bus>]:[<slot>].[<func>] # # For example: # # 03:00.0 Network controller: Atheros Communications Inc. AR9300 Wireless LAN adaptor (rev 01 # 00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03) # # The root complex for the endpoint can be found using lspci -t # # For more details refer to: # # http://wireless.kernel.org/en/users/Documentation/ASPM # You just need to modify these three values: #ROOT_COMPLEX="00:1c.1" #ROOT_COMPLEX="00:1e.0" ROOT_COMPLEX="00:1c.2" #ENDPOINT="03:00.0" #ENDPOINT="05:00.0" ENDPOINT="03:00.0" # We'll only enable the last 2 bits by using a mask # of :3 to setpci, this will ensure we keep the existing # values on the byte. # # Hex Binary Meaning # ------------------------- # 0 0b00 L0 only # 1 0b01 L0s only # 2 0b10 L1 only # 3 0b11 L1 and L0s ASPM_SETTING=2 function aspm_setting_to_string() { case $1 in 0) echo -e "\t${BLUE}L0 only${NORMAL}, ${RED}ASPM disabled${NORMAL}" ;; 1) ;; 2) echo -e "\t${GREEN}L1 only${NORMAL}" ;; 3) echo -e "\t${GREEN}L1 and L0s${NORMAL}" ;; *) echo -e "\t${RED}Invalid${NORMAL}" ;; esac } ################################################################### # Do not edit below here unless you are sending me a patch ################################################################### # # TODO: patches are welcomed to me until we submit to to # PCI Utilities upstream. # # This can be improved by in this order: # # * Accept arguments for endpoint and root complex address, and # desired ASPM settings # * Look for your ASPM capabilities by quering your # LnkCap register first. Use these values to let you # select whether you want to enable only L1 or L1 & L0s # * Searching for your root complex for you # * Search for your PCI device by using the driver # * Disable your driver and ask to reboot ? # * Rewrite in C # * Write ncurses interface [ wishlist ] # * Write GTK/QT interface [ wishlist ] # * Submit upstream as aspm.c to the PCI Utilities, which are # maintained by Martin Mares <mj@ucw.cz> # Pretty colors GREEN="\033[01;32m" YELLOW="\033[01;33m" NORMAL="\033[00m" BLUE="\033[34m" RED="\033[31m" PURPLE="\033[35m" CYAN="\033[36m" UNDERLINE="\033[02m" # we can surely read the spec to get a better value MAX_SEARCH=20 SEARCH_COUNT=1 ASPM_BYTE_ADDRESS="INVALID" ROOT_PRESENT=$(lspci | grep -c "$ROOT_COMPLEXT") ENDPOINT_PRESENT=$(lspci | grep -c "$ENDPOINT") if [[ $(id -u) != 0 ]]; then echo "This needs to be run as root" exit 1 fi if [[ $ROOT_PRESENT -eq 0 ]]; then echo "Root complex $ROOT_COMPLEX is not present" exit fi if [[ $ENDPOINT_PRESENT -eq 0 ]]; then echo "Endpoint $ENDPOINT is not present" exit fi # XXX: lspci -s some_device_not_existing does not return positive # if the device does not exist, fix this upstream function device_present() { PRESENT=$(lspci | grep -c "$1") COMPLAINT="${RED}not present${NORMAL}" if [[ $PRESENT -eq 0 ]]; then if [[ $2 != "present" ]]; then COMPLAINT="${RED}disappeared${NORMAL}" fi echo -e "Device ${BLUE}${1}${NORMAL} $COMPLAINT" return 1 fi return 0 } function find_aspm_byte_address() { device_present $ENDPOINT present if [[ $? -ne 0 ]]; then exit fi SEARCH=$(setpci -s $1 34.b) # We know on the first search $SEARCH will not be # 10 but this simplifies the implementation. while [[ $SEARCH != 10 && $SEARCH_COUNT -le $MAX_SEARCH ]]; do END_SEARCH=$(setpci -s $1 ${SEARCH}.b) # Convert hex digits to uppercase for bc SEARCH_UPPER=$(printf "%X" 0x${SEARCH}) if [[ $END_SEARCH = 10 ]]; then ASPM_BYTE_ADDRESS=$(echo "obase=16; ibase=16; $SEARCH_UPPER + 10" | bc) break fi SEARCH=$(echo "obase=16; ibase=16; $SEARCH + 1" | bc) SEARCH=$(setpci -s $1 ${SEARCH}.b) let SEARCH_COUNT=$SEARCH_COUNT+1 done if [[ $SEARCH_COUNT -ge $MAX_SEARCH ]]; then echo -e "Long loop while looking for ASPM word for $1" return 1 fi return 0 } function enable_aspm_byte() { device_present $1 present if [[ $? -ne 0 ]]; then exit fi find_aspm_byte_address $1 if [[ $? -ne 0 ]]; then return 1 fi ASPM_BYTE_HEX=$(setpci -s $1 ${ASPM_BYTE_ADDRESS}.b) ASPM_BYTE_HEX=$(printf "%X" 0x${ASPM_BYTE_HEX}) # setpci doesn't support a mask on the query yet, only on the set, # so to verify a setting on a mask we have no other optoin but # to do do this stuff ourselves. DESIRED_ASPM_BYTE_HEX=$(printf "%X" $(( (0x${ASPM_BYTE_HEX} & ~0x7) |0x${ASPM_SETTING}))) if [[ $ASPM_BYTE_ADDRESS = "INVALID" ]]; then echo -e "No ASPM byte could be found for $(lspci -s $1)" return fi echo -e "$(lspci -s $1)" echo -en "\t${YELLOW}0x${ASPM_BYTE_ADDRESS}${NORMAL} : ${CYAN}0x${ASPM_BYTE_HEX}${GREEN} --> ${BLUE}0x${DESIRED_ASPM_BYTE_HEX}${NORMAL} ... " device_present $1 present if [[ $? -ne 0 ]]; then exit fi # Avoid setting if already set if [[ $ASPM_BYTE_HEX = $DESIRED_ASPM_BYTE_HEX ]]; then echo -e "[${GREEN}SUCESS${NORMAL}] (${GREEN}already set${NORMAL})" aspm_setting_to_string $ASPM_SETTING return 0 fi # This only writes the last 3 bits setpci -s $1 ${ASPM_BYTE_ADDRESS}.b=${ASPM_SETTING}:3 sleep 3 ACTUAL_ASPM_BYTE_HEX=$(setpci -s $1 ${ASPM_BYTE_ADDRESS}.b) ACTUAL_ASPM_BYTE_HEX=$(printf "%X" 0x${ACTUAL_ASPM_BYTE_HEX}) # Do not retry this if it failed, if it failed to set. # Likey if it failed its a good reason and you should look # into that. if [[ $ACTUAL_ASPM_BYTE_HEX != $DESIRED_ASPM_BYTE_HEX ]]; then echo -e "\t[${RED}FAIL${NORMAL}] (0x${ACTUAL_ASPM_BYTE_HEX})" return 1 fi echo -e "\t[${GREEN}SUCCESS]${NORMAL}]" aspm_setting_to_string $ASPM_SETTING return 0 } device_present $ENDPOINT not_sure if [[ $? -ne 0 ]]; then exit fi echo -e "${CYAN}Root complex${NORMAL}:" enable_aspm_byte $ROOT_COMPLEX echo echo -e "${CYAN}Endpoint${NORMAL}:" enable_aspm_byte $ENDPOINT echo
- Carefully read description and make changes according to your current HW configuration
- Make sure
pciutilsis installed, if not →sudo apt install pciutils - Make sure
bcis installed, if not →sudo apt install bc(I needed to install it in fresh DietPi / Debian 12)
sudo lspci -vv | awk '/ASPM/{print $0}' RS= | grep --color -P '(^[a-z0-9:.]+|ASPM )'
- create file:
touch enable_ASPM.sh; nano enable_ASPM.shand paste script content there and save it. - make it executable:
chmod +x enable_ASPM.sh - execute it as root:
sudo ./enable_ASPM.sh
- Hardware: Asus Pro H610T D4-CSM (with latest BIOS to date 2023/11) + Intel Core i3-13100 + 1x32GB DDR4 Crucial 3200MHz + 1x SATA SSD Crucial M4
- OS, info: DietPi (Debian 12), kernel
6.5.0-10-generic - ⚡ 7.6 — 7.8 W was idle power consumption of whole system before executing this script (headless Debian, only 1 ssh client active)
- ⚡ 2.3 — 2.8 W was idle power consumption after executing this script!
Note that power consumption was measured on DC side.
other details and updates
- I changed SSD from SATA (Crucial M4 128GB) to m.2 (Samsung 980 Pro 1TB With Heatsink)
- powertop report: https://output.jsbin.com/camedofote
- dietpi-benchmark:
┌─────────────────────────────────────────────────┤ DietPi-Benchmark ├─────────────────────────────────────────────────┐
│ │
│ Benchmarks completed: │
│ - CPU performance : Duration = 1.00 seconds (lower is faster) │
│ - CPU temps : Idle = 52 °C | Full load = 63 °C │
│ - RootFS I/O : Write = 1099 MiB/s | Read = 2098 MiB/s │
│ - RAM I/O : Write = 3415 MiB/s | Read = 6657 MiB/s │
│ │
│ Compare these results online with other users, using the link below: │
│ - https://dietpi.com/survey#benchmark │
│ │
│ <Ok> │
│ │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────┤ DietPi-Benchmark ├─────────────────────────────────────────────────┐
│ │
│ Benchmarks completed: │
│ - CPU performance : Duration = 1.16 seconds (lower is faster) │
│ - CPU temps : Idle = 37 °C | Full load = 46 °C │
│ - RootFS I/O : Write = 1004 MiB/s | Read = 2438 MiB/s │
│ - RAM I/O : Write = 2947 MiB/s | Read = 6636 MiB/s │
│ │
│ Compare these results online with other users, using the link below: │
│ - https://dietpi.com/survey#benchmark │
│ │
│ <Ok> │
│ │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────┤ DietPi-Benchmark ├─────────────────────────────────────────────────┐
│ │
│ Benchmarks completed: │
│ - CPU performance : Duration = 1.11 seconds (lower is faster) │
│ - CPU temps : Idle = 39 °C | Full load = 46 °C │
│ - RootFS I/O : Write = 1007 MiB/s | Read = 2510 MiB/s │
│ - RAM I/O : Write = 3413 MiB/s | Read = 6648 MiB/s │
│ │
│ Compare these results online with other users, using the link below: │
│ - https://dietpi.com/survey#benchmark │
│ │
│ <Ok> │
│ │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
For comparison:
Odroid H3: (Intel N5105 with m.2 Samsung 980 Pro 1TB and same Crucial DDR4 3200 but 16GB)
┌─────────────────────────────────────────────────┤ DietPi-Benchmark ├─────────────────────────────────────────────────┐
│ │
│ Benchmarks completed: │
│ - CPU performance : Duration = 2.37 seconds (lower is faster) │
│ - CPU temps : Idle = 31 °C | Full load = 38 °C │
│ - RootFS I/O : Write = 558 MiB/s | Read = 1573 MiB/s │
│ - RAM I/O : Write = 1706 MiB/s | Read = 4391 MiB/s │
│ │
│ Compare these results online with other users, using the link below: │
│ - https://dietpi.com/survey#benchmark │
│ │
│ <Ok> │
│ │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
- power consumption before and after this script (it dropped from ⚡️
8W to ⚡️2W):
.