diff options
Diffstat (limited to 'usr.sbin/diskinfo/diskinfo.c')
| -rw-r--r-- | usr.sbin/diskinfo/diskinfo.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/usr.sbin/diskinfo/diskinfo.c b/usr.sbin/diskinfo/diskinfo.c deleted file mode 100644 index 1f967b7..0000000 --- a/usr.sbin/diskinfo/diskinfo.c +++ /dev/null @@ -1,364 +0,0 @@ -/*- - * Copyright (c) 2003 Poul-Henning Kamp - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the authors may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <stdio.h> -#include <stdint.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <fcntl.h> -#include <libutil.h> -#include <paths.h> -#include <err.h> -#include <sys/disk.h> -#include <sys/time.h> - -static void -usage(void) -{ - fprintf(stderr, "usage: diskinfo [-ctv] disk ...\n"); - exit (1); -} - -static int opt_c, opt_t, opt_v; - -static void speeddisk(int fd, off_t mediasize, u_int sectorsize); -static void commandtime(int fd, off_t mediasize, u_int sectorsize); - -int -main(int argc, char **argv) -{ - int i, ch, fd, error; - char buf[BUFSIZ], ident[DISK_IDENT_SIZE]; - off_t mediasize, stripesize, stripeoffset; - u_int sectorsize, fwsectors, fwheads; - - while ((ch = getopt(argc, argv, "ctv")) != -1) { - switch (ch) { - case 'c': - opt_c = 1; - opt_v = 1; - break; - case 't': - opt_t = 1; - opt_v = 1; - break; - case 'v': - opt_v = 1; - break; - default: - usage(); - } - } - argc -= optind; - argv += optind; - - if (argc < 1) - usage(); - - for (i = 0; i < argc; i++) { - fd = open(argv[i], O_RDONLY); - if (fd < 0 && errno == ENOENT && *argv[i] != '/') { - sprintf(buf, "%s%s", _PATH_DEV, argv[i]); - fd = open(buf, O_RDONLY); - } - if (fd < 0) - err(1, argv[i]); - error = ioctl(fd, DIOCGMEDIASIZE, &mediasize); - if (error) - err(1, "%s: ioctl(DIOCGMEDIASIZE) failed, probably not a disk.", argv[i]); - error = ioctl(fd, DIOCGSECTORSIZE, §orsize); - if (error) - err(1, "%s: DIOCGSECTORSIZE failed, probably not a disk.", argv[i]); - error = ioctl(fd, DIOCGFWSECTORS, &fwsectors); - if (error) - fwsectors = 0; - error = ioctl(fd, DIOCGFWHEADS, &fwheads); - if (error) - fwheads = 0; - error = ioctl(fd, DIOCGSTRIPESIZE, &stripesize); - if (error) - stripesize = 0; - error = ioctl(fd, DIOCGSTRIPEOFFSET, &stripeoffset); - if (error) - stripeoffset = 0; - if (!opt_v) { - printf("%s", argv[i]); - printf("\t%u", sectorsize); - printf("\t%jd", (intmax_t)mediasize); - printf("\t%jd", (intmax_t)mediasize/sectorsize); - printf("\t%jd", (intmax_t)stripesize); - printf("\t%jd", (intmax_t)stripeoffset); - if (fwsectors != 0 && fwheads != 0) { - printf("\t%jd", (intmax_t)mediasize / - (fwsectors * fwheads * sectorsize)); - printf("\t%u", fwheads); - printf("\t%u", fwsectors); - } - } else { - humanize_number(buf, 5, (int64_t)mediasize, "", - HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); - printf("%s\n", argv[i]); - printf("\t%-12u\t# sectorsize\n", sectorsize); - printf("\t%-12jd\t# mediasize in bytes (%s)\n", - (intmax_t)mediasize, buf); - printf("\t%-12jd\t# mediasize in sectors\n", - (intmax_t)mediasize/sectorsize); - printf("\t%-12jd\t# stripesize\n", stripesize); - printf("\t%-12jd\t# stripeoffset\n", stripeoffset); - if (fwsectors != 0 && fwheads != 0) { - printf("\t%-12jd\t# Cylinders according to firmware.\n", (intmax_t)mediasize / - (fwsectors * fwheads * sectorsize)); - printf("\t%-12u\t# Heads according to firmware.\n", fwheads); - printf("\t%-12u\t# Sectors according to firmware.\n", fwsectors); - } - if (ioctl(fd, DIOCGIDENT, ident) == 0) - printf("\t%-12s\t# Disk ident.\n", ident); - } - printf("\n"); - if (opt_c) - commandtime(fd, mediasize, sectorsize); - if (opt_t) - speeddisk(fd, mediasize, sectorsize); - close(fd); - } - exit (0); -} - - -static char sector[65536]; -static char mega[1024 * 1024]; - -static void -rdsect(int fd, u_int blockno, u_int sectorsize) -{ - int error; - - lseek(fd, (off_t)blockno * sectorsize, SEEK_SET); - error = read(fd, sector, sectorsize); - if (error != (int)sectorsize) - err(1, "read error or disk too small for test."); -} - -static void -rdmega(int fd) -{ - int error; - - error = read(fd, mega, sizeof(mega)); - if (error != sizeof(mega)) - err(1, "read error or disk too small for test."); -} - -static struct timeval tv1, tv2; - -static void -T0(void) -{ - - fflush(stdout); - sync(); - sleep(1); - sync(); - sync(); - gettimeofday(&tv1, NULL); -} - -static void -TN(int count) -{ - double dt; - - gettimeofday(&tv2, NULL); - dt = (tv2.tv_usec - tv1.tv_usec) / 1e6; - dt += (tv2.tv_sec - tv1.tv_sec); - printf("%5d iter in %10.6f sec = %8.3f msec\n", - count, dt, dt * 1000.0 / count); -} - -static void -TR(double count) -{ - double dt; - - gettimeofday(&tv2, NULL); - dt = (tv2.tv_usec - tv1.tv_usec) / 1e6; - dt += (tv2.tv_sec - tv1.tv_sec); - printf("%8.0f kbytes in %10.6f sec = %8.0f kbytes/sec\n", - count, dt, count / dt); -} - -static void -speeddisk(int fd, off_t mediasize, u_int sectorsize) -{ - int i; - uint b0, b1, sectorcount; - - sectorcount = mediasize / sectorsize; - - printf("Seek times:\n"); - printf("\tFull stroke:\t"); - b0 = 0; - b1 = sectorcount - 1 - 16384; - T0(); - for (i = 0; i < 125; i++) { - rdsect(fd, b0, sectorsize); - b0 += 16384; - rdsect(fd, b1, sectorsize); - b1 -= 16384; - } - TN(250); - - printf("\tHalf stroke:\t"); - b0 = sectorcount / 4; - b1 = b0 + sectorcount / 2; - T0(); - for (i = 0; i < 125; i++) { - rdsect(fd, b0, sectorsize); - b0 += 16384; - rdsect(fd, b1, sectorsize); - b1 += 16384; - } - TN(250); - printf("\tQuarter stroke:\t"); - b0 = sectorcount / 4; - b1 = b0 + sectorcount / 4; - T0(); - for (i = 0; i < 250; i++) { - rdsect(fd, b0, sectorsize); - b0 += 16384; - rdsect(fd, b1, sectorsize); - b1 += 16384; - } - TN(500); - - printf("\tShort forward:\t"); - b0 = sectorcount / 2; - T0(); - for (i = 0; i < 400; i++) { - rdsect(fd, b0, sectorsize); - b0 += 16384; - } - TN(400); - - printf("\tShort backward:\t"); - b0 = sectorcount / 2; - T0(); - for (i = 0; i < 400; i++) { - rdsect(fd, b0, sectorsize); - b0 -= 16384; - } - TN(400); - - printf("\tSeq outer:\t"); - b0 = 0; - T0(); - for (i = 0; i < 2048; i++) { - rdsect(fd, b0, sectorsize); - b0++; - } - TN(2048); - - printf("\tSeq inner:\t"); - b0 = sectorcount - 2048 - 1; - T0(); - for (i = 0; i < 2048; i++) { - rdsect(fd, b0, sectorsize); - b0++; - } - TN(2048); - - printf("Transfer rates:\n"); - printf("\toutside: "); - rdsect(fd, 0, sectorsize); - T0(); - for (i = 0; i < 100; i++) { - rdmega(fd); - } - TR(100 * 1024); - - printf("\tmiddle: "); - b0 = sectorcount / 2; - rdsect(fd, b0, sectorsize); - T0(); - for (i = 0; i < 100; i++) { - rdmega(fd); - } - TR(100 * 1024); - - printf("\tinside: "); - b0 = sectorcount - 100 * (1024*1024 / sectorsize) - 1;; - rdsect(fd, b0, sectorsize); - T0(); - for (i = 0; i < 100; i++) { - rdmega(fd); - } - TR(100 * 1024); - - printf("\n"); - return; -} - -static void -commandtime(int fd, off_t mediasize, u_int sectorsize) -{ - double dtmega, dtsector; - int i; - - printf("I/O command overhead:\n"); - i = mediasize; - rdsect(fd, 0, sectorsize); - T0(); - for (i = 0; i < 10; i++) - rdmega(fd); - gettimeofday(&tv2, NULL); - dtmega = (tv2.tv_usec - tv1.tv_usec) / 1e6; - dtmega += (tv2.tv_sec - tv1.tv_sec); - - printf("\ttime to read 10MB block %10.6f sec\t= %8.3f msec/sector\n", - dtmega, dtmega*100/2048); - - rdsect(fd, 0, sectorsize); - T0(); - for (i = 0; i < 20480; i++) - rdsect(fd, 0, sectorsize); - gettimeofday(&tv2, NULL); - dtsector = (tv2.tv_usec - tv1.tv_usec) / 1e6; - dtsector += (tv2.tv_sec - tv1.tv_sec); - - printf("\ttime to read 20480 sectors %10.6f sec\t= %8.3f msec/sector\n", - dtsector, dtsector*100/2048); - printf("\tcalculated command overhead\t\t\t= %8.3f msec/sector\n", - (dtsector - dtmega)*100/2048); - - printf("\n"); - return; -} |
