This repo includes custom packages primarily related to SQM and bufferbloat mitigation. They are placed here to ease installation during development and testing, and may change without notice. You should not use these packages unless requested to do so by me. Happy Testing!
To add this repo to your OpenWrt/LEDE Project router run the following commands.
(NOTE: Versions of LEDE/OpenWRT earlier that 17.01.5 include an out-of-date CAKE kernel module and iproute2 tc utility, which MUST be manually upgraded to more recent versions.)
opkg update; opkg install libustream-mbedtls
wget -O /tmp/papal-repo.pub https://raw.githubusercontent.com/guidosarducci/papal-repo/master/papal-repo.pub && opkg-key add /tmp/papal-repo.pub
sed -n -i '/papal_repo/!p;$a src/gz papal_repo https://raw.githubusercontent.com/guidosarducci/papal-repo/master' /etc/opkg/customfeeds.conf
opkg update
Add the following line
src/gz papal_repo https://raw.github.com/guidosarducci/papal-repo/master
to the repositories.conf file inside your Image Builder directory. You can use the following shell script code to achieve that:
sed -n -i '/papal_repo/!p;$a src/gz papal_repo https://raw.github.com/guidosarducci/papal-repo/master' repositories.conf
The speedtest-netperf package provides a convenient means of on-device network performance testing for OpenWrt routers. Such performance testing primarily includes characterizing the network throughput and latency, but CPU usage can also be an important secondary measurement. These aspects of network testing are motivated chiefly by the following:
-
Throughput: Network speed measurements can help troubleshoot transfer problems, and be used to determine the truth of an ISP's promised speed claims. Accurate throughput numbers also provide guidance for configuring other software's settings, such as SQM ingress/egress rates, or bandwidth limits for Bittorrent.
-
Latency: Network latency is a key factor in high-quality experiences with real-time or interactive applications such as VOIP, gaming, or video conferencing, and excessive latency can lead to undesirable dropouts, freezes and lag. Such latency problems are endemic on the Internet and often the result of bufferbloat. Systematic latency measurements are an important part of identifying and mitigating this bufferbloat.
-
CPU Usage: Observing CPU usage under network load gives insight into whether the router is CPU-bound, or if there is CPU "headroom" to support even higher network throughput. In addition to managing network traffic, a router actively running a
speedtestwill also use CPU cycles to generate network load, and measuring this distinct CPU usage also helps gauge its impact.
Note: The speedtest-netperf.sh script uses servers and network bandwidth that are provided by generous volunteers (not some wealthy "big company"). Feel free to use the script to test your SQM configuration or troubleshoot network and latency problems. Continuous or high rate use of this script may result in denied access.
(NOTE: These packages are being renamed and reworked for broader distribution and will be available when completed.)
These are enhanced versions of the standard OpenWRT SQM packages, developed and tested independently for more than a year, which provide major improvements in ease of use, configuration, functionality and robustness. Further details of the changes and usage guidelines are available in the TODO. However, much of the content in the OpenWRT User Guide is still applicable, noting the following:
- Legacy
.qosscripts (e.g.layer_cake,simple) have been removed; all aspects of their functionality are now directly configurable by users from the GUI or CLI. Any previously configured legacy scripts are emulated after package installation for a seamless upgrade. - Some complicated but important qdisc-specific settings are now simply configurable within the GUI. This includes CAKE's per-host fairness and ACK filter settings.
- Link Layer adaptation can now explicitly set framing compensation (ATM/PTM), MPU and packet overhead, which are applied generally across all qdiscs. Users can also choose to import predefined adaptation settings (e.g. "DOCSIS Cable", "ADSL pppoe-vcmux").
NOTE: When installed, these packages (versioned 2.x.x) will upgrade the standard packages (versioned 1.x.x) and migrate an existing SQM config file to a newer schema. Before installing these packages, make a backup of your existing SQM configuration:
cp /etc/config/sqm /etc/config/sqm-v1-backup
The backup can be easily restored if you revert to using the stock/legacy sqm-scripts packages.