Hello Andrew,
I get:
[root@ns5 nico]# /sbin/hdparm -i /dev/hda
/dev/hda:
Model=MAXTOR 6L040J2, FwRev=A93.0500, SerialNo=662240310103
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=32256, SectSize=21298, ECCbytes=4
BuffType=DualPortCache, BuffSize=1819kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=78177792
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
AdvancedPM=no
Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-1 ATA-2 ATA-3 ATA-4
ATA-5
??
Thanks again.
Regards,
Nico Morrison
nico.morrison@micronicos.com
___________________________________________
Micronicos Limited - London, UK.
Tel: +44 20 8870 8849 Fax: +44 20 8870 5290
___________________________________________
From: Andrew Morton [mailto:akpm@digeo.com]
Sent: 08 December 2002 10:46
To: Administrator
Cc: 'ext3-users@redhat.com'
Subject: Re: kjournald using up majority cpu%.
Administrator wrote:
>
> Thank you Andrew,
>
> Is this the same as the checkdma utility that allows turning on & off of
DMA
> on Windows?
What's that? ;)
> And as these servers are working linux customer servers - can we change
the
> DMA setting & know we can change it back without problems?
You'll need to read the hdparm manpage, and then familiarise yourself
with its usage on a test machine.
The testing should happen during a planned outage - making mistakes
with hdparm can easily take a machine down.
But the first thing which you should do (which is perfectly safe) is to
just query the settings without attempting to change anything.
mnm:/home/akpm# hdparm -i /dev/hda
/dev/hda:
Model=Maxtor 5T040H4, FwRev=TAH71DP0, SerialNo=T4J0N9BC
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=80043264
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
AdvancedPM=yes: disabled (255)
Drive Supports : ATA/ATAPI-6 T13 1410D revision 0 : ATA-1 ATA-2 ATA-3 ATA-4
ATA-5 ATA-6
See that asterisk next to "udma2"? It means this disk is running
in UltraDMA mode 2, at 33 megabytes/second. All is well.
_______________________________________________
Ext3-users@redhat.com
https://listman.redhat.com/mailman/listinfo/ext3-users
_______________________________________________
Ext3-users@redhat.com
https://listman.redhat.com/mailman/listinfo/ext3-users
