stress-ng will stress test a computer system in various selectable ways. It was designed to exercise various physical subsystems of a computer as well as the various operating system kernel interfaces. Stress-ng features:

    300+ stress tests
    80+ CPU specific stress tests that exercise floating point, integer, bit manipulation and control flow
    20+ virtual memory stress tests
    40+ file system stress tests
    30+ memory/CPU cache stress tests
    portable: builds on Linux (Debian, Devuan, RHEL, Fedora, Centos, Slackware OpenSUSE, Ubuntu, etc..), Solaris, FreeBSD, NetBSD, OpenBSD, DragonFlyBSD, Minix, Android, MacOS X, Serenity OS, GNU/Hurd, Haiku, Windows Subsystem for Linux and SunOs/Dilos/Solaris. with gcc, musl-gcc, clang, icc, icx, tcc and pcc.
    tested on alpha, armel, armhf, arm64, hppa, i386, m68k, mips32, mips64, power32, ppc64el, risc-v, sh4, s390x, sparc64, x86-64

stress-ng was originally intended to make a machine work hard and trip hardware issues such as thermal overruns as well as operating system bugs that only occur when a system is being thrashed hard. Use stress-ng with caution as some of the tests can make a system run hot on poorly designed hardware and also can cause excessive system thrashing which may be difficult to stop.

stress-ng can also measure test throughput rates; this can be useful to observe performance changes across different operating system releases or types of hardware. However, it has never been intended to be used as a precise benchmark test suite, so do NOT use it in this manner.

Running stress-ng with root privileges will adjust out of memory settings on Linux systems to make the stressors unkillable in low memory situations, so use this judiciously. With the appropriate privilege, stress-ng can allow the ionice class and ionice levels to be adjusted, again, this should be used with care.