Re: Slow harddisk

From: Ng Pek Yong (npy@mailhost.net)
Date: Thu May 09 2002 - 06:02:08 EST


On Thu, 9 May 2002, DervishD wrote:

> Hi, Ng :))
>
> > I/O support = 3 (32-bit w/sync)
>
> Try w/o sync
>
> > using_dma = 0 (off)
>
> Enable dma
>
> This should increase the speed to normal levels.
>
> Raśl
>

It got worse ;)

(note: I can;t get dma to work; see below)

# hdparm -X69 -d1 -u1 -c1 -m16 /dev/hde

/dev/hde:
 setting 32-bit I/O support flag to 1
 setting multcount to 16
 setting unmaskirq to 1 (on)
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted
 setting xfermode to 69 (UltraDMA mode5)
 multcount = 16 (on)
 I/O support = 1 (32-bit)
 unmaskirq = 1 (on)
 using_dma = 0 (off)
[root@lal root]# hdparm -Tt /dev/hde

/dev/hde:
 Timing buffer-cache reads: 128 MB in 2.12 seconds = 60.38 MB/sec
 Timing buffered disk reads: 64 MB in 24.37 seconds = 2.63 MB/sec

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This archive was generated by hypermail 2b29 : Tue May 14 2002 - 12:00:11 EST