kSAR (GitHub) is a continuation of kSAR, a GUI for sysstat and acct It plots the graphs that are collected by sa/sar utilities from the sysstat and acct packages. This data collection is usually done with cron, and should be configured separately. I particular, the SlackBuild's author has the following in his crontab: ``` * * * * * /usr/lib64/sa/sa1 10 6 -S DISK 0 0 * * * /usr/lib64/sa/sa1 --rotate ``` You need Java 8 or later to run this package. The slackbuild author uses zulu-openjdk11, but other versions might work.