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I forgot a rather crucial cast when I made this sectorsize agnostic.

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Tune iteration counts a bit.
This commit is contained in:
Poul-Henning Kamp 2003-04-09 14:25:04 +00:00
parent cf83284fe3
commit b8c2d40de1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=113295
1 changed files with 12 additions and 12 deletions
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24
usr.sbin/diskinfo/diskinfo.c
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@ -135,7 +135,7 @@ rdsect(int fd, u_int blockno, u_int sectorsize)
{ {
int error; int error;
lseek(fd, blockno * sectorsize, SEEK_SET); lseek(fd, (off_t)blockno * sectorsize, SEEK_SET);
error = read(fd, sector, sectorsize); error = read(fd, sector, sectorsize);
if (error != sectorsize) if (error != sectorsize)
err(1, "read error or disk too small for test."); err(1, "read error or disk too small for test.");
@ -201,13 +201,13 @@ speeddisk(const char *name, int fd, off_t mediasize, u_int sectorsize)
printf("Seek times:\n"); printf("Seek times:\n");
printf("\tFull stroke:\t"); printf("\tFull stroke:\t");
b0 = 0; b0 = 0;
b1 = sectorcount - 1 - 125 * 16384; b1 = sectorcount - 1 - 16384;
T0(); T0();
for (i = 0; i < 125; i++) { for (i = 0; i < 125; i++) {
rdsect(fd, b0, sectorsize); rdsect(fd, b0, sectorsize);
b0 += 16384; b0 += 16384;
rdsect(fd, b1, sectorsize); rdsect(fd, b1, sectorsize);
b1 += 16384; b1 -= 16384;
} }
TN(250); TN(250);
@ -237,38 +237,38 @@ speeddisk(const char *name, int fd, off_t mediasize, u_int sectorsize)
printf("\tShort forward:\t"); printf("\tShort forward:\t");
b0 = sectorcount / 2; b0 = sectorcount / 2;
T0(); T0();
for (i = 0; i < 1000; i++) { for (i = 0; i < 400; i++) {
rdsect(fd, b0, sectorsize); rdsect(fd, b0, sectorsize);
b0 += 16384; b0 += 16384;
} }
TN(1000); TN(400);
printf("\tShort backward:\t"); printf("\tShort backward:\t");
b0 = sectorcount / 2; b0 = sectorcount / 2;
T0(); T0();
for (i = 0; i < 1000; i++) { for (i = 0; i < 400; i++) {
rdsect(fd, b0, sectorsize); rdsect(fd, b0, sectorsize);
b0 -= 16384; b0 -= 16384;
} }
TN(1000); TN(400);
printf("\tSeq outer:\t"); printf("\tSeq outer:\t");
b0 = 0; b0 = 0;
T0(); T0();
for (i = 0; i < 20480; i++) { for (i = 0; i < 2048; i++) {
rdsect(fd, b0, sectorsize); rdsect(fd, b0, sectorsize);
b0++; b0++;
} }
TN(20480); TN(2048);
printf("\tSeq inner:\t"); printf("\tSeq inner:\t");
b0 = sectorcount - 20480 - 1; b0 = sectorcount - 2048 - 1;
T0(); T0();
for (i = 0; i < 20480; i++) { for (i = 0; i < 2048; i++) {
rdsect(fd, b0, sectorsize); rdsect(fd, b0, sectorsize);
b0++; b0++;
} }
TN(20480); TN(2048);
printf("Transfer rates:\n"); printf("Transfer rates:\n");
printf("\toutside: "); printf("\toutside: ");