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On 6/17/22 15:17, Dragan ([email protected] via alfs-discuss Mailing List) wrote:
>
> 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.
Very interesting. I'll have to consider getting one of those.
-- Bruce
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