diff options
| -rw-r--r-- | usr.sbin/diskinfo/diskinfo.c | 49 |
1 files changed, 28 insertions, 21 deletions
diff --git a/usr.sbin/diskinfo/diskinfo.c b/usr.sbin/diskinfo/diskinfo.c index 168a9098262b..554b09e9c2d1 100644 --- a/usr.sbin/diskinfo/diskinfo.c +++ b/usr.sbin/diskinfo/diskinfo.c @@ -32,6 +32,7 @@ #include <stdio.h> #include <stdint.h> #include <stdlib.h> +#include <strings.h> #include <unistd.h> #include <errno.h> #include <fcntl.h> @@ -171,7 +172,7 @@ static char sector[65536]; static char mega[1024 * 1024]; static void -rdsect(int fd, u_int blockno, u_int sectorsize) +rdsect(int fd, off_t blockno, u_int sectorsize) { int error; @@ -232,21 +233,27 @@ TR(double count) static void speeddisk(int fd, off_t mediasize, u_int sectorsize) { - int i; - uint b0, b1, sectorcount; + int bulk, i; + off_t b0, b1, sectorcount, step; sectorcount = mediasize / sectorsize; + step = 1ULL << (flsll(sectorcount / (4 * 200)) - 1); + if (step > 16384) + step = 16384; + bulk = mediasize / (1024 * 1024); + if (bulk > 100) + bulk = 100; printf("Seek times:\n"); printf("\tFull stroke:\t"); b0 = 0; - b1 = sectorcount - 1 - 16384; + b1 = sectorcount - step; T0(); for (i = 0; i < 125; i++) { rdsect(fd, b0, sectorsize); - b0 += 16384; + b0 += step; rdsect(fd, b1, sectorsize); - b1 -= 16384; + b1 -= step; } TN(250); @@ -256,9 +263,9 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) T0(); for (i = 0; i < 125; i++) { rdsect(fd, b0, sectorsize); - b0 += 16384; + b0 += step; rdsect(fd, b1, sectorsize); - b1 += 16384; + b1 += step; } TN(250); printf("\tQuarter stroke:\t"); @@ -267,9 +274,9 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) T0(); for (i = 0; i < 250; i++) { rdsect(fd, b0, sectorsize); - b0 += 16384; + b0 += step; rdsect(fd, b1, sectorsize); - b1 += 16384; + b1 += step; } TN(500); @@ -278,7 +285,7 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) T0(); for (i = 0; i < 400; i++) { rdsect(fd, b0, sectorsize); - b0 += 16384; + b0 += step; } TN(400); @@ -287,7 +294,7 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) T0(); for (i = 0; i < 400; i++) { rdsect(fd, b0, sectorsize); - b0 -= 16384; + b0 -= step; } TN(400); @@ -301,7 +308,7 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) TN(2048); printf("\tSeq inner:\t"); - b0 = sectorcount - 2048 - 1; + b0 = sectorcount - 2048; T0(); for (i = 0; i < 2048; i++) { rdsect(fd, b0, sectorsize); @@ -313,28 +320,28 @@ speeddisk(int fd, off_t mediasize, u_int sectorsize) printf("\toutside: "); rdsect(fd, 0, sectorsize); T0(); - for (i = 0; i < 100; i++) { + for (i = 0; i < bulk; i++) { rdmega(fd); } - TR(100 * 1024); + TR(bulk * 1024); printf("\tmiddle: "); - b0 = sectorcount / 2; + b0 = sectorcount / 2 - bulk * (1024*1024 / sectorsize) / 2 - 1; rdsect(fd, b0, sectorsize); T0(); - for (i = 0; i < 100; i++) { + for (i = 0; i < bulk; i++) { rdmega(fd); } - TR(100 * 1024); + TR(bulk * 1024); printf("\tinside: "); - b0 = sectorcount - 100 * (1024*1024 / sectorsize) - 1;; + b0 = sectorcount - bulk * (1024*1024 / sectorsize) - 1;; rdsect(fd, b0, sectorsize); T0(); - for (i = 0; i < 100; i++) { + for (i = 0; i < bulk; i++) { rdmega(fd); } - TR(100 * 1024); + TR(bulk * 1024); printf("\n"); return; |