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Comparing liblzf/bench.c (file contents):
Revision 1.8 by root, Tue May 6 22:49:18 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>
12#include <sys/stat.h>
13#include <sys/resource.h>
9#include <math.h> 14#include <math.h>
10#include <signal.h> 15#include <signal.h>
11#include <X11/Xlib.h> 16#include <X11/Xlib.h>
12 17
13#include "lzf.h" 18#include "lzf.h"
… …
16typedef unsigned long tval; 21typedef unsigned long tval;
17typedef unsigned long long stamp64; 22typedef unsigned long long stamp64;
18 23
19extern inline tval stamp(void) 24extern inline tval stamp(void)
20{ 25{
21 tval tsc; 26 tval tsc; long dummy;
22 asm volatile("rdtsc" : "=a" (tsc) : : "edx"); 27 asm volatile("cpuid; rdtsc" : "=a" (tsc), "=d" (dummy) : "a" (0) : "ebx", "ecx");
23 return tsc; 28 return tsc;
24} 29}
25 30
26extern inline tval measure(tval t) 31extern inline tval measure(tval t)
27{ 32{
28 tval tsc; 33 tval tsc; long dummy;
29 asm volatile("rdtsc" : "=a" (tsc) : : "edx"); 34 asm volatile("cpuid; rdtsc" : "=a" (tsc), "=d" (dummy) : "a" (0) : "ebx", "ecx");
30 if (tsc>t) 35 if (tsc>t)
31 return tsc-t; 36 return tsc-t;
32 else 37 else
33 return t-tsc; 38 return t-tsc;
34} 39}
35 40
36static void sigu (int signum) 41static void sigu (int signum)
37{ 42{
38} 43}
39 44
40int eventfd(unsigned int,int); 45#define DSIZE 17318440
46//#define DSIZE 32768
41 47
42#define DSIZE 2821120 48#include "lzf_c_best.c"
43 49
44unsigned char data[DSIZE], data2[DSIZE*2], data3[DSIZE*2]; 50unsigned char data[DSIZE], data2[DSIZE*2], data3[DSIZE*2];
45 51
46int main(void) 52int main(void)
47{ 53{
48 tval s; 54 tval s;
49 tval si[1000]; 55 tval si[1000];
50 int i, l, j; 56 int i, j, k, l;
51 int min = 1<<30; 57 int min = 1<<30;
52 int lp; 58 int lp;
53 char buf[8192]; 59 char buf[8192];
54 int p[2]; 60 int p[2];
55 int evfd = eventfd (0, 0);
56 long ctr = 1; 61 long ctr = 1;
62 struct stat sbuf;
57 63
58 pipe (p); 64 pipe (p);
59 65
60 FILE *f = fopen ("data", "r"); 66 FILE *f = fopen ("data", "r");
61 fread (data, DSIZE, 1, f); 67 fread (data, DSIZE, 1, f);
62 fclose (f); 68 fclose (f);
63 69
64 signal (SIGURG, sigu); 70 signal (SIGURG, sigu);
65 71
66 for (lp = 0; lp < 100000; lp++) { 72 for (lp = 0; lp < 1000000; lp++) {
67 s=stamp(); 73 s=stamp();
68 74
69 snprintf (buf, 64, "<1.%llx>", (unsigned long long)0xa234567812ULL); 75 //struct timespec ts; clock_gettime (CLOCK_THREAD_CPUTIME_ID, &ts);
76 //printf ("%9ld\n", ts.tv_nsec);//D
77 //struct rusage usage; getrusage (RUSAGE_SELF, &usage);
78 //struct tms tms; times (&tms);
79
70 //kill (0, SIGURG); 80 //kill (0, SIGURG);
71 //write (evfd, &ctr, 8); 81 //write (evfd, &ctr, 8);
72 //read (evfd, &ctr, 8); 82 //read (evfd, &ctr, 8);
73// write (p[1], &buf, 1); 83 //write (p[1], &buf, 1);
74// read (p[0], &buf, 4); 84 //read (p[0], &buf, 4);
85 //stat ("/etc/passwd", &sbuf);
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);
75 98
76 si[0]=measure(s); 99 si[0]=measure(s);
77 100
78 //j = lzf_decompress (data2, l, data3, DSIZE*2); 101 assert (!memcmp (data, data3, DSIZE));
79 102
80 printf ("\r%10d (%d) ", si[0], l); 103 printf ("\r%10d (%d) ", si[0], l);
81 if (si[0] < min && si[0] > 0) 104 if (si[0] < min && si[0] > 0)
82 { 105 {
83 printf ("\n"); 106 printf ("\n");

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