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Adds the speed test for CRC.

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This commit is contained in:
Andrea Mazzoleni 2013-08-20 18:55:54 +02:00
parent 9324933be0
commit 28bdd0f7b7
3 changed files with 23 additions and 2 deletions
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19
speed.c
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@ -161,6 +161,25 @@ void speed(void)
printf("memset0 %"PRIu64" [MB/s]\n", ds / dt);
SPEED_START {
for(j=0;j<diskmax;++j) {
crc32c_gen(0, buffer[j], block_size);
}
} SPEED_STOP
printf("CRC table %"PRIu64" [MB/s]\n", ds / dt);
#if defined(__i386__) || defined(__x86_64__)
if (cpu_has_sse42()) {
SPEED_START {
for(j=0;j<diskmax;++j) {
crc32c_x86(0, buffer[j], block_size);
}
} SPEED_STOP
printf("CRC intel-crc32l %"PRIu64" [MB/s]\n", ds / dt);
}
#endif
SPEED_START {
for(j=0;j<diskmax;++j) {
memhash(HASH_MURMUR3, seed, digest, buffer[j], block_size);

4
util.c
View file

@ -1067,7 +1067,7 @@ static uint32_t CRC32C_3[256] = {
*/
#define CRC_IV 0xffffffffU
static uint32_t crc32c_gen(uint32_t crc, const unsigned char* ptr, unsigned size)
uint32_t crc32c_gen(uint32_t crc, const unsigned char* ptr, unsigned size)
{
crc ^= CRC_IV;
@ -1091,7 +1091,7 @@ static uint32_t crc32c_gen(uint32_t crc, const unsigned char* ptr, unsigned size
#if defined(__i386__) || defined(__x86_64__)
static uint32_t crc32c_x86(uint32_t crc, const unsigned char* ptr, unsigned size)
uint32_t crc32c_x86(uint32_t crc, const unsigned char* ptr, unsigned size)
{
crc ^= CRC_IV;

2
util.h
View file

@ -500,6 +500,8 @@ void randomize(void* ptr, unsigned size);
* Computes the CRC-32 (Castagnoli)
*/
uint32_t (*crc32c)(uint32_t crc, const unsigned char* ptr, unsigned size);
uint32_t crc32c_gen(uint32_t crc, const unsigned char* ptr, unsigned size);
uint32_t crc32c_x86(uint32_t crc, const unsigned char* ptr, unsigned size);
/**
* Initializes the CRC-32 (Castagnoli) support.