mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-05 15:21:43 +00:00
b7ef5a699c
* Get rid of non-existent vectorclass * Move FastMemcpy to contribs * Restore comments * Disable FastMemcpy on non-Linux * Fix cmake file * Don't build FastMemcpy for ARM64 * Replace FastMemcpy submodule with its contents * Fix cmake file * Move widechar_width to contrib/ * Move sumbur to contrib/ * Move consistent-hashing to contrib/ * Fix UBSan tests
221 lines
6.6 KiB
C
221 lines
6.6 KiB
C
//=====================================================================
|
|
//
|
|
// FastMemcpy.c - skywind3000@163.com, 2015
|
|
//
|
|
// feature:
|
|
// 50% speed up in avg. vs standard memcpy (tested in vc2012/gcc4.9)
|
|
//
|
|
//=====================================================================
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#if (defined(_WIN32) || defined(WIN32))
|
|
#include <windows.h>
|
|
#include <mmsystem.h>
|
|
#ifdef _MSC_VER
|
|
#pragma comment(lib, "winmm.lib")
|
|
#endif
|
|
#elif defined(__unix)
|
|
#include <sys/time.h>
|
|
#include <unistd.h>
|
|
#else
|
|
#error it can only be compiled under windows or unix
|
|
#endif
|
|
|
|
#include "FastMemcpy.h"
|
|
|
|
unsigned int gettime()
|
|
{
|
|
#if (defined(_WIN32) || defined(WIN32))
|
|
return timeGetTime();
|
|
#else
|
|
static struct timezone tz={ 0,0 };
|
|
struct timeval time;
|
|
gettimeofday(&time,&tz);
|
|
return (time.tv_sec * 1000 + time.tv_usec / 1000);
|
|
#endif
|
|
}
|
|
|
|
void sleepms(unsigned int millisec)
|
|
{
|
|
#if defined(_WIN32) || defined(WIN32)
|
|
Sleep(millisec);
|
|
#else
|
|
usleep(millisec * 1000);
|
|
#endif
|
|
}
|
|
|
|
|
|
void benchmark(int dstalign, int srcalign, size_t size, int times)
|
|
{
|
|
char *DATA1 = (char*)malloc(size + 64);
|
|
char *DATA2 = (char*)malloc(size + 64);
|
|
size_t LINEAR1 = ((size_t)DATA1);
|
|
size_t LINEAR2 = ((size_t)DATA2);
|
|
char *ALIGN1 = (char*)(((64 - (LINEAR1 & 63)) & 63) + LINEAR1);
|
|
char *ALIGN2 = (char*)(((64 - (LINEAR2 & 63)) & 63) + LINEAR2);
|
|
char *dst = (dstalign)? ALIGN1 : (ALIGN1 + 1);
|
|
char *src = (srcalign)? ALIGN2 : (ALIGN2 + 3);
|
|
unsigned int t1, t2;
|
|
int k;
|
|
|
|
sleepms(100);
|
|
t1 = gettime();
|
|
for (k = times; k > 0; k--) {
|
|
memcpy(dst, src, size);
|
|
}
|
|
t1 = gettime() - t1;
|
|
sleepms(100);
|
|
t2 = gettime();
|
|
for (k = times; k > 0; k--) {
|
|
memcpy_fast(dst, src, size);
|
|
}
|
|
t2 = gettime() - t2;
|
|
|
|
free(DATA1);
|
|
free(DATA2);
|
|
|
|
printf("result(dst %s, src %s): memcpy_fast=%dms memcpy=%d ms\n",
|
|
dstalign? "aligned" : "unalign",
|
|
srcalign? "aligned" : "unalign", (int)t2, (int)t1);
|
|
}
|
|
|
|
|
|
void bench(int copysize, int times)
|
|
{
|
|
printf("benchmark(size=%d bytes, times=%d):\n", copysize, times);
|
|
benchmark(1, 1, copysize, times);
|
|
benchmark(1, 0, copysize, times);
|
|
benchmark(0, 1, copysize, times);
|
|
benchmark(0, 0, copysize, times);
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
void random_bench(int maxsize, int times)
|
|
{
|
|
static char A[11 * 1024 * 1024 + 2];
|
|
static char B[11 * 1024 * 1024 + 2];
|
|
static int random_offsets[0x10000];
|
|
static int random_sizes[0x8000];
|
|
unsigned int i, p1, p2;
|
|
unsigned int t1, t2;
|
|
for (i = 0; i < 0x10000; i++) { // generate random offsets
|
|
random_offsets[i] = rand() % (10 * 1024 * 1024 + 1);
|
|
}
|
|
for (i = 0; i < 0x8000; i++) { // generate random sizes
|
|
random_sizes[i] = 1 + rand() % maxsize;
|
|
}
|
|
sleepms(100);
|
|
t1 = gettime();
|
|
for (p1 = 0, p2 = 0, i = 0; i < times; i++) {
|
|
int offset1 = random_offsets[(p1++) & 0xffff];
|
|
int offset2 = random_offsets[(p1++) & 0xffff];
|
|
int size = random_sizes[(p2++) & 0x7fff];
|
|
memcpy(A + offset1, B + offset2, size);
|
|
}
|
|
t1 = gettime() - t1;
|
|
sleepms(100);
|
|
t2 = gettime();
|
|
for (p1 = 0, p2 = 0, i = 0; i < times; i++) {
|
|
int offset1 = random_offsets[(p1++) & 0xffff];
|
|
int offset2 = random_offsets[(p1++) & 0xffff];
|
|
int size = random_sizes[(p2++) & 0x7fff];
|
|
memcpy_fast(A + offset1, B + offset2, size);
|
|
}
|
|
t2 = gettime() - t2;
|
|
printf("benchmark random access:\n");
|
|
printf("memcpy_fast=%dms memcpy=%dms\n\n", (int)t2, (int)t1);
|
|
}
|
|
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma comment(lib, "winmm.lib")
|
|
#endif
|
|
|
|
int main(void)
|
|
{
|
|
bench(32, 0x1000000);
|
|
bench(64, 0x1000000);
|
|
bench(512, 0x800000);
|
|
bench(1024, 0x400000);
|
|
bench(4096, 0x80000);
|
|
bench(8192, 0x40000);
|
|
bench(1024 * 1024 * 1, 0x800);
|
|
bench(1024 * 1024 * 4, 0x200);
|
|
bench(1024 * 1024 * 8, 0x100);
|
|
|
|
random_bench(2048, 8000000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
benchmark(size=32 bytes, times=16777216):
|
|
result(dst aligned, src aligned): memcpy_fast=78ms memcpy=260 ms
|
|
result(dst aligned, src unalign): memcpy_fast=78ms memcpy=250 ms
|
|
result(dst unalign, src aligned): memcpy_fast=78ms memcpy=266 ms
|
|
result(dst unalign, src unalign): memcpy_fast=78ms memcpy=234 ms
|
|
|
|
benchmark(size=64 bytes, times=16777216):
|
|
result(dst aligned, src aligned): memcpy_fast=109ms memcpy=281 ms
|
|
result(dst aligned, src unalign): memcpy_fast=109ms memcpy=328 ms
|
|
result(dst unalign, src aligned): memcpy_fast=109ms memcpy=343 ms
|
|
result(dst unalign, src unalign): memcpy_fast=93ms memcpy=344 ms
|
|
|
|
benchmark(size=512 bytes, times=8388608):
|
|
result(dst aligned, src aligned): memcpy_fast=125ms memcpy=218 ms
|
|
result(dst aligned, src unalign): memcpy_fast=156ms memcpy=484 ms
|
|
result(dst unalign, src aligned): memcpy_fast=172ms memcpy=546 ms
|
|
result(dst unalign, src unalign): memcpy_fast=172ms memcpy=515 ms
|
|
|
|
benchmark(size=1024 bytes, times=4194304):
|
|
result(dst aligned, src aligned): memcpy_fast=109ms memcpy=172 ms
|
|
result(dst aligned, src unalign): memcpy_fast=187ms memcpy=453 ms
|
|
result(dst unalign, src aligned): memcpy_fast=172ms memcpy=437 ms
|
|
result(dst unalign, src unalign): memcpy_fast=156ms memcpy=452 ms
|
|
|
|
benchmark(size=4096 bytes, times=524288):
|
|
result(dst aligned, src aligned): memcpy_fast=62ms memcpy=78 ms
|
|
result(dst aligned, src unalign): memcpy_fast=109ms memcpy=202 ms
|
|
result(dst unalign, src aligned): memcpy_fast=94ms memcpy=203 ms
|
|
result(dst unalign, src unalign): memcpy_fast=110ms memcpy=218 ms
|
|
|
|
benchmark(size=8192 bytes, times=262144):
|
|
result(dst aligned, src aligned): memcpy_fast=62ms memcpy=78 ms
|
|
result(dst aligned, src unalign): memcpy_fast=78ms memcpy=202 ms
|
|
result(dst unalign, src aligned): memcpy_fast=78ms memcpy=203 ms
|
|
result(dst unalign, src unalign): memcpy_fast=94ms memcpy=203 ms
|
|
|
|
benchmark(size=1048576 bytes, times=2048):
|
|
result(dst aligned, src aligned): memcpy_fast=203ms memcpy=191 ms
|
|
result(dst aligned, src unalign): memcpy_fast=219ms memcpy=281 ms
|
|
result(dst unalign, src aligned): memcpy_fast=218ms memcpy=328 ms
|
|
result(dst unalign, src unalign): memcpy_fast=218ms memcpy=312 ms
|
|
|
|
benchmark(size=4194304 bytes, times=512):
|
|
result(dst aligned, src aligned): memcpy_fast=312ms memcpy=406 ms
|
|
result(dst aligned, src unalign): memcpy_fast=296ms memcpy=421 ms
|
|
result(dst unalign, src aligned): memcpy_fast=312ms memcpy=468 ms
|
|
result(dst unalign, src unalign): memcpy_fast=297ms memcpy=452 ms
|
|
|
|
benchmark(size=8388608 bytes, times=256):
|
|
result(dst aligned, src aligned): memcpy_fast=281ms memcpy=452 ms
|
|
result(dst aligned, src unalign): memcpy_fast=280ms memcpy=468 ms
|
|
result(dst unalign, src aligned): memcpy_fast=298ms memcpy=514 ms
|
|
result(dst unalign, src unalign): memcpy_fast=344ms memcpy=472 ms
|
|
|
|
benchmark random access:
|
|
memcpy_fast=515ms memcpy=1014ms
|
|
|
|
*/
|
|
|
|
|
|
|
|
|