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Comparing liblzf/bench.c (file contents):
Revision 1.9 by root, Thu Dec 18 16:05:14 2008 UTC vs.
Revision 1.16 by root, Sun Jan 11 01:32:04 2015 UTC

1#include <stdio.h> 1#include <stdio.h>
2#include <unistd.h>
2#include <assert.h> 3#include <assert.h>
3#include <string.h> 4#include <string.h>
4#include <time.h> 5#include <time.h>
5#include <sys/time.h> 6#include <sys/time.h>
7#include <sys/times.h>
6#include <sys/types.h> 8#include <sys/types.h>
7#include <sys/socket.h> 9#include <sys/socket.h>
10#include <sys/mman.h>
8#include <sys/ioctl.h> 11#include <sys/ioctl.h>
9#include <sys/stat.h> 12#include <sys/stat.h>
13#include <sys/resource.h>
10#include <math.h> 14#include <math.h>
11#include <signal.h> 15#include <signal.h>
12#include <X11/Xlib.h> 16#include <X11/Xlib.h>
13 17
14#include "lzf.h" 18#include "lzf.h"
… …
17typedef unsigned long tval; 21typedef unsigned long tval;
18typedef unsigned long long stamp64; 22typedef unsigned long long stamp64;
19 23
20extern inline tval stamp(void) 24extern inline tval stamp(void)
21{ 25{
22 tval tsc; 26 tval tsc; long dummy;
23 asm volatile("rdtsc" : "=a" (tsc) : : "edx"); 27 asm volatile("cpuid; rdtsc" : "=a" (tsc), "=d" (dummy) : "a" (0) : "ebx", "ecx");
24 return tsc; 28 return tsc;
25} 29}
26 30
27extern inline tval measure(tval t) 31extern inline tval measure(tval t)
28{ 32{
29 tval tsc; 33 tval tsc; long dummy;
30 asm volatile("rdtsc" : "=a" (tsc) : : "edx"); 34 asm volatile("cpuid; rdtsc" : "=a" (tsc), "=d" (dummy) : "a" (0) : "ebx", "ecx");
31 if (tsc>t) 35 if (tsc>t)
32 return tsc-t; 36 return tsc-t;
33 else 37 else
34 return t-tsc; 38 return t-tsc;
35} 39}
36 40
37static void sigu (int signum) 41static void sigu (int signum)
38{ 42{
39} 43}
40 44
41int eventfd(unsigned int,int); 45#define DSIZE 17318440
46//#define DSIZE 32768
42 47
43#define DSIZE 2821120 48#include "lzf_c_best.c"
44 49
45unsigned char data[DSIZE], data2[DSIZE*2], data3[DSIZE*2]; 50unsigned char data[DSIZE], data2[DSIZE*2], data3[DSIZE*2];
46 51
47int main(void) 52int main(void)
48{ 53{
49 tval s; 54 tval s;
50 tval si[1000]; 55 tval si[1000];
51 int i, l, j; 56 int i, j, k, l;
52 int min = 1<<30; 57 int min = 1<<30;
53 int lp; 58 int lp;
54 char buf[8192]; 59 char buf[8192];
55 int p[2]; 60 int p[2];
56 int evfd = eventfd (0, 0);
57 long ctr = 1; 61 long ctr = 1;
58 struct stat sbuf; 62 struct stat sbuf;
59 63
60 pipe (p); 64 pipe (p);
61 65
… …
63 fread (data, DSIZE, 1, f); 67 fread (data, DSIZE, 1, f);
64 fclose (f); 68 fclose (f);
65 69
66 signal (SIGURG, sigu); 70 signal (SIGURG, sigu);
67 71
68 for (lp = 0; lp < 100000; lp++) { 72 for (lp = 0; lp < 1000000; lp++) {
69 s=stamp(); 73 s=stamp();
70 74
71 //snprintf (buf, 64, "<1.%llx>", (unsigned long long)0xa234567812ULL); 75 //struct timespec ts; clock_gettime (CLOCK_THREAD_CPUTIME_ID, &ts);
72 //getpgrp(); 76 //printf ("%9ld\n", ts.tv_nsec);//D
77 //struct rusage usage; getrusage (RUSAGE_SELF, &usage);
78 //struct tms tms; times (&tms);
79
73 //kill (0, SIGURG); 80 //kill (0, SIGURG);
74 //write (evfd, &ctr, 8); 81 //write (evfd, &ctr, 8);
75 //read (evfd, &ctr, 8); 82 //read (evfd, &ctr, 8);
76 //write (p[1], &buf, 1); 83 //write (p[1], &buf, 1);
77 //read (p[0], &buf, 4); 84 //read (p[0], &buf, 4);
78 //stat ("/etc/passwd", &sbuf); 85 //stat ("/etc/passwd", &sbuf);
79 free(malloc(8*1024*1024)); 86 //struct timeval tv; gettimeofday (&tv, 0);
87 //void *x = mmap (0, 16384, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE,-1,0);
88
89 l = lzf_compress_best (data, DSIZE, data2, DSIZE*2);
90 //for (k = 0; k < l; ++k)
91 //printf ("1 %2d: %02x\n", k, data2[k]);
92 assert(l);
93
94 j = lzf_decompress (data2, l, data3, DSIZE*2);
95 //for (k = 0; k < j; ++k)
96 //printf ("2 %2d: %02x\n", k, data3[k]);
97 assert (j == DSIZE);
80 98
81 si[0]=measure(s); 99 si[0]=measure(s);
82 100
83 //j = lzf_decompress (data2, l, data3, DSIZE*2); 101 assert (!memcmp (data, data3, DSIZE));
84 102
85 printf ("\r%10d (%d) ", si[0], l); 103 printf ("\r%10d (%d) ", si[0], l);
86 if (si[0] < min && si[0] > 0) 104 if (si[0] < min && si[0] > 0)
87 { 105 {
88 printf ("\n"); 106 printf ("\n");

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