![i7-8700 & 20.04 - PassMark 远低于“平均水平” - 10300 vs 13300 中值](https://linux22.com/image/941507/i7-8700%20%26%2020.04%20-%20PassMark%20%E8%BF%9C%E4%BD%8E%E4%BA%8E%E2%80%9C%E5%B9%B3%E5%9D%87%E6%B0%B4%E5%B9%B3%E2%80%9D%20-%2010300%20vs%2013300%20%E4%B8%AD%E5%80%BC.png)
我最近将一些边缘/物联网机器从 i5-10500T 平台移至 i7-8700 平台。在部署第一批机器后,我立即“感觉”到它们变慢了,但无法确定原因。经过大量 PassMark 测试后,我在 i7-8700 上无法获得 10,800 左右的成绩,而 cpubenchmark 上的平均分数为 13300+。
因此,为了进行比较,我想知道“旧”机器的测试结果会是多少 - 它们的得分为 10,736,这大约与中位数 10,742 非常接近。
为什么这些 i7-8700 比 i5-10700T “慢” 这么多?如果 i7-8700 的平均 PassMark 分数是 13,300,为什么我连 11,000 都拿不到?我启用了 SpeedStep、Turbo 模式,使用 tuned-adm 将配置文件设置为吞吐量性能 - 什么都没有改变。它们只是停留在 10,800 - 与 i5-10700T 相同的 PassMark 分数。
我已经束手无策了。我花了好几个小时研究、阅读、做出改变。我甚至降级到 18.04 来看看是否有区别。没有。我尝试了不同版本的 BIOS,没有结果。
我对任何可能有助于解决此问题的想法都很感兴趣。以下是“旧” i5 和“新” i7 的 PassMark 结果:
Intel(R) Core(TM) i5-10500T CPU @ 2.30GHz (x86_64)
6 cores @ 3800 MHz | 7.6 GiB RAM
Number of Processes: 12 | Test Iterations: 1 | Test Duration: Medium
--------------------------------------------------------------------------
CPU Mark: 10958
Integer Math 37717 Million Operations/s
Floating Point Math 23439 Million Operations/s
Prime Numbers 37 Million Primes/s
Sorting 23928 Thousand Strings/s
Encryption 4892 MB/s
Compression 136 MB/s
CPU Single Threaded 2269 Million Operations/s
Physics 808 Frames/s
Extended Instructions (SSE) 5872 Million Matrices/s
相对:
Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (x86_64)
6 cores @ 4600 MHz | 7.7 GiB RAM
Number of Processes: 12 | Test Iterations: 1 | Test Duration: Medium
--------------------------------------------------------------------------
CPU Mark: 10816
Integer Math 40672 Million Operations/s
Floating Point Math 26083 Million Operations/s
Prime Numbers 20 Million Primes/s
Sorting 17248 Thousand Strings/s
Encryption 5263 MB/s
Compression 157 MB/s
CPU Single Threaded 2987 Million Operations/s
Physics 442 Frames/s
Extended Instructions (SSE) 8256 Million Matrices/s
以及相关的 CPU 信息:
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
driver: intel_pstate
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 4294.55 ms.
hardware limits: 800 MHz - 4.60 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 800 MHz and 4.60 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 4.45 GHz.
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 158
model name : Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
stepping : 10
microcode : 0xb4
cpu MHz : 4519.046
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds
bogomips : 6384.00
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management: