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On 17/06/2022 01:57, Bruce Dubbs ([email protected] via alfs-discuss
Mailing List) wrote:
> On 6/16/22 16:04, Dragan ([email protected] via alfs-discuss Mailing
> List) wrote:
>
>> Thanks for the scripts.
>>
>> About timing: SBU of 75 sec was based on -j1 and not -j16. I have set
>> binutils to be built without optimisation.
>> On the same system in VM I got SBU between 20 aand 22 when building
>> using my own scripts and that is inclusief unpacking source code and
>> logging using -j16. But maintaining scripts between dev releases is
>> just to much time consuming and mistake prone.
>>
>> On wsl using -j24 I got times between 18,9 and 19,5 sec using full
>> scale virtualization available using the same script. But with wsl
>> enabled is Virtual Box practically useless, it feels like "good old
>> time" of 8080 and I have thrown it away.
>>
>> What have realy surprised me is surprisingly low time of Kernel build
>> 93 seconds. I have already booted in the system and it's looks ok. I
>> will take deeper look at the issue in chroot.
>>
>> Total build time is not issue. Multitasking with some power to spare...
>
> That HW is interesting. What is your output of
>
> $ lscpu | head -n18
>
> What I have is:
>
> Architecture: x86_64
> CPU op-mode(s): 32-bit, 64-bit
> Address sizes: 43 bits physical, 48 bits virtual
> Byte Order: Little Endian
> CPU(s): 24
> On-line CPU(s) list: 0-23
> Vendor ID: AuthenticAMD
> Model name: AMD Ryzen 9 3900X 12-Core Processor
> CPU family: 23
> Model: 113
> Thread(s) per core: 2
> Core(s) per socket: 12
> Socket(s): 1
> Stepping: 0
> Frequency boost: enabled
> CPU max MHz: 4672.0698
> CPU min MHz: 2200.0000
> BogoMIPS: 7585.83
>
> -- Bruce
I have today finished my fourth build with logging an all possible tests
run once and al logging enabled duration just above three hours while I
have used host quite intensively.
But my fifth build while I have not used host at al finished in 124.1
SBU of 19 sec as defined by binutils compiled with -j16. If I have
didn't calculated wrongly that means build time of 39 min 30 sec build
time. I will submit report to the list tomorrow.
That was real unexpected (from my side) for VM. My virtual hardware spec
is below.
lscpu | head -n18
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: GenuineIntel
Model name: 12th Gen Intel(R) Core(TM) i9-12900K
CPU family: 6
Model: 151
Thread(s) per core: 1
Core(s) per socket: 16
Socket(s): 1
Stepping: 2
BogoMIPS: 6374.38
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
rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid
tsc_known_freq pni pclmulqdq vmx ssse3 cx16 pcid sse4_1 sse4_2 x2apic
movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch
invpcid_single tpr_shadow vnmi flexpriority vpid fsgsbase avx2 invpcid
rdseed clflushopt md_clear flush_l1d arch_capabilities
Virtualization: VT-x
Hypervisor vendor: KVM
And on the host extract from CPU-Z report:
Processors Information
-------------------------------------------------------------------------
Socket 1 ID = 0
Number of cores 16 (max 64)
Number of threads 24 (max 24)
Hybrid yes, 2 coresets
Core Set 0 P-Cores, 8 cores, 16 threads
Core Set 1 E-Cores, 8 cores, 8 threads
Manufacturer GenuineIntel
Name Intel Core i9 12900K
Codename Alder Lake
Specification 12th Gen Intel(R) Core(TM) i9-12900K
Package Socket 1700 LGA
CPUID 6.7.2
Extended CPUID 6.97
Core Stepping C0
Technology 10 nm
Tjmax 100.0 °C
Core Speed 3187.2 MHz
Stock frequency 3200 MHz
Max frequency 5200 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2,
EM64T, VT-x, AES, AVX, AVX2, FMA3, SHA
L1 Data cache 8 x 48 KB (12-way, 64-byte line) + 8 x 32 KB
(8-way, 64-byte line)
L1 Instruction cache 8 x 32 KB (8-way, 64-byte line) + 8 x 64 KB
(8-way, 64-byte line)
L2 cache 8 x 1.25 MB (10-way, 64-byte line) + 2 x 2 MB
(16-way, 64-byte line)
L3 cache 30 MB (12-way, 64-byte line)
Max CPUID level 00000020h
Max CPUID ext. level 80000008h
FID/VID Control yes
Dragan
PS: I have postponed build of new machine waiting for Alder Lake because
of performance.
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