mirror of
https://github.com/amadvance/snapraid.git
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280 lines
6.7 KiB
C
280 lines
6.7 KiB
C
/*
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* Copyright (C) 2011,2013 Andrea Mazzoleni
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __CPU_H
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#define __CPU_H
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#if defined(__i386__) || defined(__x86_64__)
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static inline void cpuid(uint32_t func, uint32_t* reg)
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{
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asm volatile(
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#if defined(__i386__) && defined(__PIC__)
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/* allow compilation in PIC mode saving ebx */
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"xchgl %%ebx, %1\n"
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"cpuid\n"
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"xchgl %%ebx, %1\n"
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: "=a" (reg[0]), "=r" (reg[1]), "=c" (reg[2]), "=d" (reg[3])
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: "0" (func)
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#else
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"cpuid\n"
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: "=a" (reg[0]), "=b" (reg[1]), "=c" (reg[2]), "=d" (reg[3])
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: "0" (func)
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#endif
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);
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}
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#define CPU_VENDOR_MAX 13
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static inline void cpu_info(char* vendor, unsigned* family, unsigned* model)
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{
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uint32_t reg[4];
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unsigned f, ef, m, em;
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cpuid(0, reg);
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((uint32_t*)vendor)[0] = reg[1];
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((uint32_t*)vendor)[1] = reg[3];
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((uint32_t*)vendor)[2] = reg[2];
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vendor[12] = 0;
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cpuid(1, reg);
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f = (reg[0] >> 8) & 0xF;
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ef = (reg[0] >> 20) & 0xFF;
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m = (reg[0] >> 4) & 0xF;
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em = (reg[0] >> 16) & 0xF;
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if (strcmp(vendor, "AuthenticAMD") == 0) {
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if (f < 15) {
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*family = f;
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*model = m;
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} else {
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*family = f + ef;
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*model = m + (em << 4);
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}
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} else {
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*family = f + ef;
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*model = m + (em << 4);
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}
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}
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static inline int cpu_has_mmx(void)
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{
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uint32_t reg[4];
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cpuid(1, reg);
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return (reg[3] >> 23) & 1;
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}
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static inline int cpu_has_sse2(void)
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{
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uint32_t reg[4];
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cpuid(1, reg);
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return (reg[3] >> 26) & 1;
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}
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static inline int cpu_has_sse42(void)
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{
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uint32_t reg[4];
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cpuid(1, reg);
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return (reg[2] >> 20) & 1;
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}
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/**
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* Check if the processor has a slow MULT implementation.
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* If yes, it's better to use a hash not based on multiplication.
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*/
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static inline int cpu_has_slowmult(void)
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{
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char vendor[CPU_VENDOR_MAX];
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unsigned family;
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unsigned model;
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cpu_info(vendor, &family, &model);
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if (strcmp(vendor, "GenuineIntel") == 0) {
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/* Intel(R) Atom(TM) CPU D525 @ 1.80GHz (info from user)
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* Compiler gcc 4.7.2
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* CPU GenuineIntel, family 6, model 28, flags mmx sse2 slowmult
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* Memory is little-endian 64-bit
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* Speed test with 8 disk and 262144 buffer size...
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* memset0 1849 [MB/s]
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* HASH Murmur3 378 [MB/s]
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* HASH Spooky2 3413 [MB/s]
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* RAID5 int32x2 707 [MB/s]
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* RAID5 mmxx2 1264 [MB/s]
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* RAID5 mmxx4 1910 [MB/s]
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* RAID5 sse2x2 2204 [MB/s]
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* RAID5 sse2x4 2980 [MB/s]
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* RAID6 int32x2 296 [MB/s]
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* RAID6 mmxx2 543 [MB/s]
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* RAID6 sse2x2 1068 [MB/s]
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* RAID6 sse2x4 1601 [MB/s]
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*/
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if (family == 6 && model == 28)
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return 1;
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}
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return 0;
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}
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/* other cases */
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/* Intel(R) Core(TM) i7-3740QM CPU @ 2.70GHz
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* Compiler gcc 4.7.3
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* CPU GenuineIntel, family 6, model 58, flags mmx sse2
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* Memory is little-endian 32-bit
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* memset0 34685 [MB/s]
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* Murmur3 4170 [MB/s]
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* Spooky2 2599 [MB/s]
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* RAID5 int32x2 8919 [MB/s]
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* RAID5 mmxx2 17170 [MB/s]
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* RAID5 sse2x2 27478 [MB/s]
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* RAID6 int32x2 1953 [MB/s]
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* RAID6 mmxx2 7560 [MB/s]
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* RAID6 sse2x2 13930 [MB/s]
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*/
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/* Intel(R) Core(TM) i7-3740QM CPU @ 2.70GHz
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* Compiler gcc 4.7.3
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* CPU GenuineIntel, family 6, model 58, flags mmx sse2
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* Memory is little-endian 64-bit
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* memset0 26164 [MB/s]
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* Murmur3 4469 [MB/s]
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* Spooky2 12834 [MB/s]
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* RAID5 int32x2 10775 [MB/s]
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* RAID5 mmxx2 19644 [MB/s]
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* RAID5 sse2x2 29168 [MB/s]
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* RAID6 int32x2 3288 [MB/s]
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* RAID6 mmxx2 8374 [MB/s]
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* RAID6 sse2x2 15547 [MB/s]
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*/
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/* Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz
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* Compiler gcc 4.7.1
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* CPU GenuineIntel, family 6, model 37, flags mmx sse2
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* Memory is little-endian 32-bit
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* memset0 25468 [MB/s]
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* Murmur3 3357 [MB/s]
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* Spooky2 1861 [MB/s]
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* RAID5 int32x2 5043 [MB/s]
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* RAID5 mmxx2 9864 [MB/s]
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* RAID5 sse2x2 16896 [MB/s]
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* RAID6 int32x2 1100 [MB/s]
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* RAID6 mmxx2 5056 [MB/s]
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* RAID6 sse2x2 8726 [MB/s]
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*/
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/* AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ 1913.377 MHz
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* Compiler gcc 4.7.3
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* CPU AuthenticAMD, family 15, model 107, flags mmx sse2
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* Memory is little-endian 32-bit
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* memset 2414 [MB/s]
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* Murmur3 1213 [MB/s]
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* Spooky2 947 [MB/s]
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* RAID5 int32x2 532 [MB/s]
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* RAID5 mmxx2 1121 [MB/s]
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* RAID5 sse2x2 2061 [MB/s]
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* RAID6 int32x2 280 [MB/s]
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* RAID6 mmxx2 632 [MB/s]
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* RAID6 sse2x2 909 [MB/s]
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*/
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/* ARM Feroceon 88FR131 rev 1 (v5l)
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* Compiler gcc 4.7.2
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* CPU is not and x86/x64
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* Memory is little-endian 32-bit
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* memset 763 [MB/s]
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* Murmur3 237 [MB/s]
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* Spooky2 216 [MB/s]
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* RAID5 int32x2 233 [MB/s]
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* RAID6 int32x2 103 [MB/s]
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*/
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/* Intel(R) Xeon(R) CPU E3-1270 V2 @ 3.50GHz $
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* Compiler gcc 4.8.1
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* CPU GenuineIntel, family 6, model 58, flags mmx sse2
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* Memory is little-endian 64-bit
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* memset 27842 [MB/s]
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* Murmur3 4884 [MB/s]
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* Spooky2 14039 [MB/s]
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* RAID5 int32x2 11038 [MB/s]
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* RAID5 mmxx2 20055 [MB/s]
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* RAID5 sse2x2 30703 [MB/s]
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* RAID6 int32x2 3267 [MB/s]
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* RAID6 mmxx2 8883 [MB/s]
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* RAID6 sse2x2 16433 [MB/s]
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*/
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/* Bobcat/Zacade (info from x264 -> full family 20)
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* AMD E-350 Processor (info from user)
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* Compiler gcc 4.7.3
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* CPU AuthenticAMD, family 20, model 1, flags mmx sse2
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* Memory is little-endian 64-bit
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* memset 2137 [MB/s]
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* Murmur3 1140 [MB/s]
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* Spooky2 2326 [MB/s]
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* RAID5 int32x2 1853 [MB/s]
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* RAID5 mmxx2 2019 [MB/s]
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* RAID5 sse2x2 2908 [MB/s]
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* RAID6 int32x2 884 [MB/s]
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* RAID6 mmxx2 1502 [MB/s]
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* RAID6 sse2x2 1168 [MB/s] (slow version with prefetchnta)
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*/
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/* AMD Turion(tm) II Neo N40L Dual-Core Processor (info from user)
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* Compiler gcc 4.7.1
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* CPU AuthenticAMD, family 16, model 6, flags mmx sse2
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* Memory is little-endian 64-bit
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* memset 4910 [MB/s]
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* Murmur3 1160 [MB/s]
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* Spooky2 3994 [MB/s]
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* RAID5 int32x2 530 [MB/s]
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* RAID5 mmxx2 1114 [MB/s]
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* RAID5 sse2x1 2127 [MB/s]
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* RAID5 sse2x2 2804 [MB/s]
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* RAID6 int32x2 316 [MB/s]
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* RAID6 mmxx2 655 [MB/s]
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* RAID6 sse2x2 639 [MB/s] (slow version with prefetchnta)
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*/
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/* AMD Athlon(tm) II X4 620 (info from user)
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* Compiler gcc 4.7.3
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* CPU AuthenticAMD, family 16, model 5, flags mmx sse2
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* Memory is little-endian 64-bit
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* memset 2845 [MB/s]
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* Murmur3 2262 [MB/s]
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* Murmur3x64 3500 [MB/s]
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* Spooky2 4362 [MB/s]
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* Spooky2x86 4000 [MB/s]
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* RAID5 int32x2 1064 [MB/s]
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* RAID5 mmxx2 2064 [MB/s]
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* RAID5 sse2x2 3289 [MB/s]
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* RAID6 int32x2 639 [MB/s]
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* RAID6 mmxx2 1325 [MB/s]
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* RAID6 sse2x2 915 [MB/s] (slow version with prefetchnta)
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*/
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#endif
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#endif
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