Also, I run geekbench, and single was less(1718) but multi was more(12831)
OK, here is a screen shot. cpuz and geekbench5. On to linux install.
View attachment 58554
So, geekbench is a bit silly, but anyway:OK, rebooted, then had to revert to novueu drivers (spelling). An now I get this. Now installing boinc....
1923
Single-Core Score
13138
Multi-core
Running 5.13 linux kernal.
- original Windows score (Win 10 or 11?), DDR4-4000 c18(?)
1718 single (100 %), 12831 multi (100 %) - Windows 11, DDR4-3200 c17
1755 single (102 %), 13094 multi (102 %) - Linux Mint 20.1 (kernel 5.13), DDR4-3200 c17
1923 single (112 %), 13138 multi (102 %)
Note that all these scores, especially the 'single' scores, are perhaps a bit a luck of the draw from run to run, as they depend on how much the P cores and E cores are accessed respectively. The previously discussed change of scheduler policy in upstream kernel 5.16 (change is enabled by default, but could be disabled by downstream distributors at compile time) would shift the emphasis to P cores somewhat.
If
lscpu -e
still gives the same ordering as in post #3, this command would launch a geekbench run on the P cores only:taskset -c 0-15 Geekbench-5.4.4-Linux/geekbench_x86_64
Or on the E cores only:
taskset -c 16-19 Geekbench-5.4.4-Linux/geekbench_x86_64
No guarantee that this works as intended though, as I don't know whether or not geekbench picks up that the multithread runs will only have access to 16 or 4 instead of 20 logical CPUs. (More thorough would be to go into the BIOS and boot with specific cores disabled, but it may not be possible to set up an E-cores-only system that way.)
Edit:
Oh wait, Alder Lake and Linux kernel ≥4.10 support 'Turbo Boost Max Technology 3.0', a.k.a 'preferred cores'. This should cause the scheduling of lightly threaded workloads to be biased towards the preferred cores (which in case of Alder Lake, happen to be P cores). In the lscpu output of post #3, the logical CPUs 4,5,12,13 correspond to four threads of two preferred cores, I presume.
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