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+---- Thread: speed up your hard discs (/thread-2500.html)
speed up your hard discs - anyweb - 2005-08-10
if you are finding things a little slow maybe dma is not enabled on your hard disc
to find out if it is or not, try this command as root (assuming /dev/hda is your hard disc, if not try fdisk -l to find out what is your current hd)
Quote:[root@localhost ~]# hdparm -d /dev/hda
/dev/hda:
using_dma = 0 (off)
as we can see here, the hard disc (/dev/hda) is not using DMA, so lets do a quick test before enabling dma.
to test the hdd speed try this
Quote:[root@localhost ~]# hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 24 MB in 3.26 seconds = 7.36 MB/sec
[root@localhost ~]#
ok, now lets enable the DMA transfer mode.
Code:
[root@localhost ~]# hdparm -d 1 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
using_dma = 1 (on)now check the results of the speed test again
Quote:[root@localhost ~]# hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 52 MB in 3.11 seconds = 16.72 MB/sec
[root@localhost ~]#
speaks for itself !
cheers
anyweb
speed up your hard discs - xDamox - 2005-08-10
Hi,
Nice little tip there :)but I would like to note that the /etc/sysconfig/harddisk shows this:
# Set this to 1 to enable DMA. This might cause some
# data corruption on certain chipset / hard drive
# combinations. This is used with the "-d" option