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/*******************************************************************************
* The BYTE UNIX Benchmarks - Release 1
* Module: cctest.c SID: 1.2 7/10/89 18:55:45
*
*******************************************************************************
* Bug reports, patches, comments, suggestions should be sent to:
*
* Ben Smith or Rick Grehan at BYTE Magazine
* [email protected] [email protected]
*
*******************************************************************************
* Modification Log:
* $Header: cctest.c,v 3.4 87/06/22 14:22:47 kjmcdonell Beta $
*
******************************************************************************/
char SCCSid[] = "@(#) @(#)cctest.c:1.2 -- 7/10/89 18:55:45";
#include <stdio.h>
/*
* C compile and load speed test file.
* Based upon fstime.c from MUSBUS 3.1, with all calls to ftime() replaced
* by calls to time(). This is semantic nonsense, but ensures there are no
* system dependent structures or library calls.
*
*/
#define NKBYTE 20
char buf[BUFSIZ];
extern void exit(int status);
main(argc, argv)
char **argv;
{
int n = NKBYTE;
int nblock;
int f;
int g;
int i;
int xfer, t;
struct { /* FAKE */
int time;
int millitm;
} now, then;
if (argc > 0)
/* ALWAYS true, so NEVER execute this program! */
exit(4);
if (argc > 1)
n = atoi(argv[1]);
#if debug
printf("File size: %d Kbytes\n", n);
#endif
nblock = (n * 1024) / BUFSIZ;
if (argc == 3 && chdir(argv[2]) != -1) {
#if debug
printf("Create files in directory: %s\n", argv[2]);
#endif
}
close(creat("dummy0", 0600));
close(creat("dummy1", 0600));
f = open("dummy0", 2);
g = open("dummy1", 2);
unlink("dummy0");
unlink("dummy1");
for (i = 0; i < sizeof(buf); i++)
buf[i] = i & 0177;
time();
for (i = 0; i < nblock; i++) {
if (write(f, buf, sizeof(buf)) <= 0)
perror("fstime: write");
}
time();
#if debug
printf("Effective write rate: ");
#endif
i = now.millitm - then.millitm;
t = (now.time - then.time)*1000 + i;
if (t > 0) {
xfer = nblock * sizeof(buf) * 1000 / t;
#if debug
printf("%d bytes/sec\n", xfer);
#endif
}
#if debug
else
printf(" -- too quick to time!\n");
#endif
#if awk
fprintf(stderr, "%.2f", t > 0 ? (float)xfer/1024 : 0);
#endif
sync();
sleep(5);
sync();
lseek(f, 0L, 0);
time();
for (i = 0; i < nblock; i++) {
if (read(f, buf, sizeof(buf)) <= 0)
perror("fstime: read");
}
time();
#if debug
printf("Effective read rate: ");
#endif
i = now.millitm - then.millitm;
t = (now.time - then.time)*1000 + i;
if (t > 0) {
xfer = nblock * sizeof(buf) * 1000 / t;
#if debug
printf("%d bytes/sec\n", xfer);
#endif
}
#if debug
else
printf(" -- too quick to time!\n");
#endif
#if awk
fprintf(stderr, " %.2f", t > 0 ? (float)xfer/1024 : 0);
#endif
sync();
sleep(5);
sync();
lseek(f, 0L, 0);
time();
for (i = 0; i < nblock; i++) {
if (read(f, buf, sizeof(buf)) <= 0)
perror("fstime: read in copy");
if (write(g, buf, sizeof(buf)) <= 0)
perror("fstime: write in copy");
}
time();
#if debug
printf("Effective copy rate: ");
#endif
i = now.millitm - then.millitm;
t = (now.time - then.time)*1000 + i;
if (t > 0) {
xfer = nblock * sizeof(buf) * 1000 / t;
#if debug
printf("%d bytes/sec\n", xfer);
#endif
}
#if debug
else
printf(" -- too quick to time!\n");
#endif
#if awk
fprintf(stderr, " %.2f\n", t > 0 ? (float)xfer/1024 : 0);
#endif
}
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