I tested this morning with an install on an SD card and the disk benchmarks were not significantly different. The updated `raspi-firmware` did seem to result in slightly slower performance (7188 events before and 6525 after) but I attribute this to a low CPU clock rather than a problem with the SD card driver. Details at https://github.com/HankB/Pi-4B-bookworm-performance#2022-03-15-testing-with-sd-card .
I'll be happy to file the bug reports. https://github.com/raspberrypi/firmware/issues/1705 Debian BTS next. On Tue, Mar 15, 2022 at 9:02 AM Diederik de Haas <didi.deb...@cknow.org> wrote: > On Tuesday, 15 March 2022 13:32:37 CET Hank Barta wrote: > > Some additional information that might be useful is that the system seems > > unable to determine CPU frequencies. For example > > > > root@up:~# cpupower frequency-info > > analyzing CPU 0: > > no or unknown cpufreq driver is active on this CPU > > CPUs which run at the same hardware frequency: Not Available > > CPUs which need to have their frequency coordinated by software: Not > > Available > > maximum transition latency: Cannot determine or is not supported. > > Not Available > > available cpufreq governors: Not Available > > Unable to determine current policy > > current CPU frequency: Unable to call hardware > > current CPU frequency: Unable to call to kernel > > I lack the knowledge to properly/fully understand the issue Gunnar linked > to, > but it looks applicable ... still (despite the last msg indicating the > issue > was fixed). > I don't know exactly the role that clocks play, but they seem quite > important. > And when the value of a/multiple clock(s) return 0, it doesn't surprise me > that it would cause other things to fail, like the ones you reported > above, > which in turn cause the CPU (f.e.) to be way slower then it can be. > > Personally I think it's more useful if Hank reported the issue himself to > https://github.com/raspberrypi/firmware/ then let Gunnar do it on his > behalf. > > Having a bug in Debian's BTS (against raspi-firmware) regarding this issue > seems useful as well and with the 'forwarded' keyword it can be linked to > the > upstream issue. > > Cheers, > Diederik -- Beautiful Sunny Winfield
