Subj : how many kernels must a penguin compile before they call it stable?
To   : Benny Pedersen
From : Maurice Kinal
Date : Wed Jul 26 2023 04:17 pm

Hey Benny!

 BP> does it say epyc in uname -a ?

Nope.  All kernels are reporting x86_64 which from the kernel's point of view 
is correct for all despite the differences.  As far as zen3/zen2 goes, I see 
very little difference other than speed.

 BP> i still don't have any epyc cpu, so i am happy :=)

 :r !lscpu
Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Address sizes:                   48 bits physical, 48 bits virtual
Byte Order:                      Little Endian
CPU(s):                          16
On-line CPU(s) list:             0-15
Vendor ID:                       AuthenticAMD
Model name:                      AMD EPYC 3251 8-Core Processor
CPU family:                      23
Model:                           1
Thread(s) per core:              2
Core(s) per socket:              8
Socket(s):                       1
Stepping:                        2
Frequency boost:                 enabled
CPU(s) scaling MHz:              48%
CPU max MHz:                     2500.0000
CPU min MHz:                     1200.0000
BogoMIPS:                        5000.05
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep 
mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext 
fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid 
extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 
movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic 
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext 
perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate ssbd ibpb 
vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt 
xsavec xgetbv1 clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save 
tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic 
v_vmsave_vmload vgif overflow_recov succor smca
Virtualization:                  AMD-V
L1d cache:                       256 KiB (8 instances)
L1i cache:                       512 KiB (8 instances)
L2 cache:                        4 MiB (8 instances)
L3 cache:                        16 MiB (2 instances)
NUMA node(s):                    1
NUMA node0 CPU(s):               0-15
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Not affected
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Not affected
Vulnerability Mmio stale data:   Not affected
Vulnerability Retbleed:          Mitigation; untrained return thunk; SMT 
vulnerable
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled 
via prctl
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and 
__user pointer sanitization
Vulnerability Spectre v2:        Mitigation; Retpolines, IBPB conditional, 
STIBP disabled, RSB filling, PBRSB-eIBRS Not affected
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected

The above is a zen2 processor.  Also ecc ddr4 at it's disposal which is very 
nice.  Also, also a samsung nvme (default boot disk) which so far has been the 
best when compared to other brands.  Also, also, also four hotswappable sata 
drives.

Life is good,
Maurice

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.... Fidonet Unplugged - One in a million.
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