RRD is the Acronym for Round Robin Database. RRD is a system to store and display time-series data (i.e. network bandwidth, machine-room temperature, server load average). It stores the data in a very compact way that will not expand over time, and it presents useful graphs by processing the data to enforce a certain data density. It can be used either via simple wrapper scripts (from shell or Perl) or via frontends that poll network devices and put a friendly user interface on it.
Magisk is a suite of open source software for customizing Android, supporting devices higher than Android 6.0.
#!/sbin/sh
A "4G Exclusive" or "4G Only" Magisk module is a systemless modification designed to force a rooted Android device to stay on the 4G LTE network, preventing it from automatically switching to 3G or 2G Core Purpose & Functionality
Before using a Magisk module, many users find they can achieve the same result without root by using the Android testing menu. By dialing *#*#4636#*#* and selecting Phone Information , you can set the "Preferred Network Type" to
Optimizing the TCP/IP stack for faster ping in gaming.
on how to install this specific module or check if your carrier supports How to Enhance Network Performance with a Magisk Module