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