Linux 7.2 On Threadripper Shows Some Nice I/O Improvements & Faster Poll, Some Regressions

I have begun testing out Linux 7.2 on more hardware following the winding down of the merge window and culminating with yesterday's Linux 7.2-rc1 release. Today's tests are looking at how Linux 7.2 in its early development state is comparing to Linux 7.1 stable on AMD Ryzen Threadripper.

Over the weekend I was conducting benchmarks of Linux 7.1 stable against Linux 7.2 using the Git state as of 27 June. The same standard Kconfig was used for both kernel builds on the same system. This system was a Threadripper HEDT desktop/workstation build with the 96-core AMD Ryzen Threadripper PRO 9995WX, ASUS PRO WS TRX50-SAGE WIFI, 4 x 32GB DDR5-6400 memory, 2TB Corsair MP700 PRO NVMe SSD, and Radeon AI PRO R9700 graphics.

The only change between benchmark runs was swapping out the Linux 7.1 and 7.2 Git kernels for seeing the performance impact on the new kernel, which will be released as stable in August and go on to power the likes of Ubuntu 26.10 and Fedora 45.

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