AMD Renoir Seeing Nice Uplift Moving From Ubuntu 20.04 To 22.04 LTS
Turning more to CPU/system performance, both the Intel and AMD systems were showing off gains in some areas. With the QuantLib quantitative finance modeling / trading / risk management software there were hefty gains on Ubuntu 22.04 over 20.04.4 LTS -- due in part to going from the GCC9 compiler to GCC11 that better supports these modern CPUs.
WebP image encoding was also seeing better performance in some areas.
Of course, in some areas the performance is unchanged by the new Ubuntu Long Term Support release.
The AMD Ryzen 7 4800U OnLogic system was seeing better OpenJDK Java performance on the new Ubuntu release while the numbers were rather unchanged for the Core i7 10700T system. One of the other changes worth mentioning on the AMD side is that with Ubuntu 20.04 LTS the ACPI CPUFreq Ondemand governor is used by default while on more recent kernels (and with Ubuntu 22.04 LTS) the default AMD CPU behavior is using ACPI CPUFreq with the "Schedutil" governor that leverages scheduler utilization data.
While the AMD Renoir system was showing OpenJDK Java improvements with Ubuntu 22.04 LTS, the Intel Comet Lake's steady performance still tended to come ahead of the Zen 2 APU in this area.