perf top --sort comm,dso
perf record --call-graph dwarf
perf report --call-graph --sort comm,dso
https://dev.to/franckpachot/linux-perf-top-basics-understand-the-316l
7z b -mmt1
(single thread)
7z b5 -mmt1
(5x tests)
7z b
(multi thread)
(https://askubuntu.com/a/1219689/958072)
dd if=/dev/zero of=/tmp/test1.img bs=1G count=1 oflag=dsync
dd if=/dev/zero of=/tmp/test2.img bs=512 count=1000 oflag=dsync
(https://www.cyberciti.biz/faq/howto-linux-unix-test-disk-performance-with-dd-command/)
https://www.howtogeek.com/devops/how-to-test-your-unix-servers-disk-and-ram-speed/
https://mazzo.li/posts/value-speculation.html
systemd-detect-virt
(https://serverfault.com/a/933994/599382)
virt-what
dmidecode -s system-manufacturer
(https://ostechnix.com/check-linux-system-physical-virtual-machine/)
numactl/numastat
, taskset