phe.paillier并行计算测试

使用最基础的方式测试对比单进程与多进程、多线程计算的性能表现。

TL;DR

phe.paillier原生无法利用多核进行计算，使用多进程可以充分利用CPU，朴素的统计来看，可以将加密速度提高（核心数量/2）的倍数。相信使用更高效的多核心方案可以进一步提高。

测试结果

• keysize = 2048
• 每个核心计算100次（单线程100*核心数次）

模式	加密次数	总耗时(秒)	平均单次耗时	处理速度	测试平台	进程数量
单线程	700	7.89	0.0112	89.28/s	普通PC(8核心)	1
多线程	700	8.30	0.0118	84.74/s	普通PC(8核心)	1
多进程	700	2.35	0.00335	298.50/s	普通PC(8核心)	7
单线程	1100	7.96	0.0072	138.88/s	普通PC(12核心)	1
多线程	1100	7.99	0.0072	138.88/s	普通PC(12核心)	1
多进程	1100	1.39	0.00127	787.40/s	普通PC(12核心)	11
单线程	3100	41.90	0.0135	74.07/s	多核心服务器(32核心)	1
多线程	3100	69.11	0.0223	44.84/s	多核心服务器(32核心)	1
多进程	3100	2.889	0.00093	1075.26/s	多核心服务器(32核心)	31

0.0112 / 0.00335 = 3.34
0.0072 / 0.00127 = 5.66 0.0135 / 0.00093 = 14.51

普通PC(8核心)

Python Version: 3.8.10.final.0 (64 bit)
Cpuinfo Version: 8.0.0
Vendor ID Raw: GenuineIntel
Hardware Raw: 
Brand Raw: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
Hz Advertised Friendly: 1.6000 GHz
Hz Actual Friendly: 1.8000 GHz
Hz Advertised: (1600000000, 0)
Hz Actual: (1800000000, 0)
Arch: X86_64
Bits: 64
Count: 8
Arch String Raw: x86_64
L1 Data Cache Size: 
L1 Instruction Cache Size: 
L2 Cache Size: 65536
L2 Cache Line Size: 256
L2 Cache Associativity: 6
L3 Cache Size: 6291456
Stepping: 10
Model: 142
Family: 6
Processor Type: 
Flags: 3dnowprefetch, abm, acpi, adx, aperfmperf, apic, arat, arch_perfmon, art, avx, avx2, bmi1, bmi2, bts, clflush, clflushopt, cmov, constant_tsc, cpuid, cpuid_fault, cx16, cx8, de, ds_cpl, dtes64, dtherm, dts, epb, ept, ept_ad, erms, est, f16c, flexpriority, flush_l1d, fma, fpu, fsgsbase, fxsr, ht, hwp, hwp_act_window, hwp_epp, hwp_notify, ibpb, ibrs, ida, intel_pt, invpcid, invpcid_single, lahf_lm, lm, mca, mce, md_clear, mmx, monitor, movbe, mpx, msr, mtrr, nonstop_tsc, nopl, nx, osxsave, pae, pat, pbe, pcid, pclmulqdq, pdcm, pdpe1gb, pebs, pge, pln, pni, popcnt, pse, pse36, pti, pts, rdrand, rdrnd, rdseed, rdtscp, rep_good, sdbg, sep, sgx, smap, smep, ss, ssbd, sse, sse2, sse4_1, sse4_2, ssse3, stibp, syscall, tm, tm2, tpr_shadow, tsc, tsc_adjust, tsc_deadline_timer, tscdeadline, vme, vmx, vnmi, vpid, x2apic, xgetbv1, xsave, xsavec, xsaveopt, xsaves, xtopology, xtpr

普通PC(12核心)

Python Version: 3.9.1.final.0 (64 bit)
Cpuinfo Version: 8.0.0
Vendor ID Raw: AuthenticAMD
Hardware Raw: 
Brand Raw: AMD Ryzen 5 3600 6-Core Processor
Hz Advertised Friendly: 3.5930 GHz
Hz Actual Friendly: 3.5930 GHz
Hz Advertised: (3593000000, 0)
Hz Actual: (3593000000, 0)
Arch: X86_64
Bits: 64
Count: 12
Arch String Raw: AMD64
L1 Data Cache Size:
L1 Instruction Cache Size:
L2 Cache Size: 3145728
L2 Cache Line Size: 512
L2 Cache Associativity: 6
L3 Cache Size: 33554432
Stepping:
Model: 113
Family: 23
Processor Type:
Flags: 3dnow, 3dnowprefetch, abm, adx, aes, apic, avx, avx2, bmi1, bmi2, clflush, clflushopt, clwb, cmov, cmp_legacy, cr8_legacy, cx16, cx8, de, dts, f16c, fma, fpu, fxsr, ht, hypervisor, ia64, lahf_lm, lm, mca, mce, misalignsse, mmx, movbe, msr, mtrr, osvw, osxsave, pae, pat, pclmulqdq, perfctr_core, pge, pni, popcnt, pqe, pqm, pse, pse36, rdpid, rdrnd, rdseed, sep, sepamd, serial, sha, smap, smep, ss, sse, sse2, sse4_1, sse4_2, sse4a, ssse3, tm, topoext, tsc, umip, vme, wdt, xsave

多核心服务器(32核心)

Python Version: 3.8.10.final.0 (64 bit)
Cpuinfo Version: 8.0.0
Vendor ID Raw: GenuineIntel
Hardware Raw: 
Brand Raw: Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz
Hz Advertised Friendly: 2.6000 GHz
Hz Actual Friendly: 1.2000 GHz
Hz Advertised: (2600000000, 0)
Hz Actual: (1200000000, 0)
Arch: X86_64
Bits: 64
Count: 32
Arch String Raw: x86_64
L1 Data Cache Size: 
L1 Instruction Cache Size: 
L2 Cache Size: 65536
L2 Cache Line Size: 256
L2 Cache Associativity: 6
L3 Cache Size: 20971520
Stepping: 7
Model: 45
Family: 6
Processor Type: 
Flags: acpi, aes, aperfmperf, apic, arat, arch_perfmon, avx, bts, clflush, cmov, constant_tsc, cpuid, cx16, cx8, dca, de, ds_cpl, dtes64, dtherm, dts, epb, ept, est, flexpriority, flush_l1d, fpu, fxsr, ht, ibpb, ibrs, ida, lahf_lm, lm, mca, mce, md_clear, mmx, monitor, msr, mtrr, nonstop_tsc, nopl, nx, osxsave, pae, pat, pbe, pcid, pclmulqdq, pdcm, pdpe1gb, pebs, pge, pln, pni, popcnt, pse, pse36, pti, pts, rdtscp, rep_good, sep, smx, ss, ssbd, sse, sse2, sse4_1, sse4_2, ssse3, stibp, syscall, tm, tm2, tpr_shadow, tsc, tsc_deadline_timer, tscdeadline, vme, vmx, vnmi, vpid, x2apic, xsave, xsaveopt, xtopology, xtpr