Re: [gentoo-user] NAS box and switching from Phenom II X6 1090T to FX-6300

[Meik Frischke <meik.frischke@gmail.com>]

Am 2024-04-17 12:33, schrieb Dale:
> I found a benchmark website that compares the two.  Link below.  It
> claims about 80% faster.  In some ways, twice as fast. Sometimes those
> bench tests don't reflect the real world to well.  Most of them seem to
> test gaming speeds which isn't of much use anyway for me.  I'm more
> about compiling and such.  Just wondering how much speed difference 
> this
> would make.  Maybe someone reading this did a similar upgrade or has
> seen both in action.  If so, post and share your thoughts. 
> 

Hi Dale,

since Moore's Law isn't quite dead yet there is a significant 
performance uplift in newer processor generations, especially with the 
smaller 5nm process nodes of recent, after some years of stagnation at 
14nm (your FX-8350 was manufactured at 32nm). With each process shrink 
(32nm -> 28nm -> 22 nm -> 14nm -> 10nm -> 7nm -> 5nm) new CPUs can 
deliver higher performance with the same power consumption or achieve 
similar performance levels with lower power consumption.
Looking at the open-benchmarking default configuration kernel compile 
benchmark (pts/build-linux-kernel-1.15.0), the Ryzen 5 7600 (slower 
non-X) took ~101s to compile the kernel (based on 28 submitted results) 
while the FX-8350 took ~422s for the same task (based on 4 submissions) 
[1]. Unlike gaming, compiling tends to scale quite well with core count 
and for the gentoo use-case the measured performance difference is in 
most cases similar for different packages. There are many influencing 
factors for benchmarking like running kernel version, activated options 
and mitigations so YMMV, but you can test it yourself: there are ebuilds 
for the phoronix-benchmark-suite in various overlays [2]. You can 
perform the benchmark with $(phoronix-test-suite benchmark 
pts/build-linux-kernel-1.15.0) with the "defconfig" test configuration 
option.

Cheers,
Meik

[1] 
https://openbenchmarking.org/test/pts/build-linux-kernel&eval=9cdcd82c9c47af9df17263e4312f634338dbf476#metrics
[2] https://gpo.zugaina.org/app-benchmarks/phoronix-test-suite