Proves de velocitat de dalmem
Aquestes proves es fan per a la majoria de les funcions de dalmem, i aquí veiem els millors resultats.
Actualment (Versió 1.0.1) es fa servir un espai de 32KB, així que els resultats són només de la caché (la velocitat de la RAM no hauria d'afectar a aquests resultats).
Cada bloc de cada funció (10 trucades consecutives) es crida 50 cops, i s'apunta el millor resultat. 50x10 trucades aconsegueixen normalment que la CPU funcioni a la seva màxima velocitat.
Si vols reproduïr aquestes proves a les teves pròpies màquines, descarrega si us plau el codi font de dalib (provat nomès en Linux), compila'l i prova'l tú mateix (fes un cop d'ull als arxius README i INSTALL).
Raw test results:
Test environment: 32.0KB buffer, every test is performed 50 times with 10 iterations, seed is just half the buffer. Version 1.0.1
+--------- Option0 ---------+--------- Option1 ---------+--------- Option2 ---------+--------- Option3 ---------+Best
Function name |F us B/s S us B/s|F us B/s S us B/s|F us B/s S us B/s|F us B/s S us B/s| F S
memsearch8 R| 18.9 1.61G 9.4 1.62G| 18.9 1.61G 9.4 1.62G| 18.9 1.61G 9.4 1.62G| 1.7 17.9G 0.9 16.9G| 3 3
memsearch16 R| 9.4 3.24G 4.7 3.24G| 9.4 3.24G 4.7 3.24G| 9.4 3.24G 4.7 3.24G| 1.7 17.9G 0.9 16.9G| 3 3
memsearch32 R| 4.7 6.49G 2.3 6.63G| 4.7 6.49G 2.3 6.63G| 4.7 6.49G 2.3 6.63G| 1.7 17.9G 0.9 16.9G| 3 3
memsearch64 R| 2.3 13.2G 1.1 13.8G| | | | 0 0
memsearch8r R| 35.7 854M 17.4 876M| 2.4 12.7G 1.2 12.7G| | | 1 1
memsearch16r R| 11.1 2.74G 5.5 2.77G| | | | 0 0
memsearch32r R| 6.0 5.08G 3.1 4.92G| | | | 0 0
memsearch64r R| 3.6 8.47G 1.9 8.03G| | | | 0 0
memsearch8ri R| 28.0 1.08G 13.5 1.13G| 2.3 13.2G 1.2 12.7G| | | 1 1
memsearch16ri R| 11.0 2.77G 5.4 2.82G| | | | 0 0
memsearch32ri R| 6.1 5.00G 3.1 4.92G| | | | 0 0
memsearch64ri R| 3.7 8.24G 1.9 8.03G| | | | 0 0
bitmapsearch8 R| 28.4 1.07G 14.2 1.07G| 1.8 16.9G 0.9 16.9G| | | 1 1
bitmapsearch16 R| 14.2 2.14G 7.1 2.14G| 1.8 16.9G 0.9 16.9G| | | 1 1
bitmapsearch32 R| 7.1 4.29G 3.5 4.35G| 1.8 16.9G 0.9 16.9G| | | 1 1
bitmapsearch64 R| 3.5 8.71G 1.8 8.47G| | | | 0 0
bitmapsearch8r R| 38.7 788M 19.1 798M| 3.0 10.1G 1.5 10.1G| | | 1 1
bitmapsearch16r R| 20.4 1.49G 10.0 1.52G| | | | 0 0
bitmapsearch32r R| 6.1 5.00G 3.2 4.76G| | | | 0 0
bitmapsearch64r R| 3.7 8.24G 2.0 7.62G| | | | 0 0
ChkSum32 R| 4.7 6.49G | 4.7 6.49G | 1.1 27.7G | | 2
All tests passed.
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Processor data (only one entry):
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 37
model name : Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz
stepping : 5
cpu MHz : 1197.000
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 11
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
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt aes lahf_lm ida arat dts tpr_shadow vnmi flexpriority ept vpid
bogomips : 6399.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
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Notes:
Intel H55 (shared video buffer), dual bank DDR3 1333 RAM 6-8-6-24
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