Re: Yet another disk transfer speed problem

[Bharath Krishnan]

Hi,

Here is fdisk -l results:

[root@yakuza root]# /sbin/fdisk -l /dev/hdg

Disk /dev/hdg: 255 heads, 63 sectors, 4866 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hdg1   *         1       255   2048256    6  FAT16

[root@yakuza root]# /sbin/fdisk -l /dev/hde

Disk /dev/hde: 255 heads, 63 sectors, 1867 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hde1             1         6     48163+  83  Linux
/dev/hde2             7      1056   8434125   83  Linux
/dev/hde3   *      1154      1867   5735205    7  HPFS/NTFS
/dev/hde4          1057      1153    779152+   f  Win95 Ext'd (LBA)
/dev/hde5          1057      1153    779121   82  Linux swap

Partition table entries are not in disk order

As you can see, I have a fat16 partition on hdg. I can delete it and make
an ext3 partition there and see if that changes anything.

Thanks,

-bharath

>>>

Could you provide fdisk -l for both? For some odd reason unknown to me
some filesystems give slower results with hdparm than others, even with
the buffer-cache reads (which are intended to measure memory speed, not
drive speed, and thus should be the same for all drives on a given
mainboard). Also, hdparm directly on the drive device is often a bit
slower than hdparm for the first (outermost) partition. These problems
have been far worse in older kernels, though. With 2.2 I once
benchmarked a vfat-partition at half the speed the same partition gave
as ext2.

Holger

-bharath