* Setting 32bit IO on SATA drives
@ 2004-10-26 21:50 J.A. Magallon
2004-10-26 23:01 ` Jeff Garzik
2004-10-27 2:19 ` Mark Lord
0 siblings, 2 replies; 4+ messages in thread
From: J.A. Magallon @ 2004-10-26 21:50 UTC (permalink / raw)
To: Lista Linux-Kernel
Hi all...
I have a bunch of SATA drives on a RAID-5 setup.
I was investigating the usual things on ide disks to optimize performance,
with hdparm.
The defalt settings, as they boot:
sata_promise version 1.00
ACPI: PCI interrupt 0000:00:07.0[A] -> GSI 17 (level, low) -> IRQ 177
ata1: SATA max UDMA/133 cmd 0xF0802200 ctl 0xF0802238 bmdma 0x0 irq 177
...
ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003 88:407f
ata1: dev 0 ATA, max UDMA/133, 490234752 sectors: lba48
ata1: dev 0 configured for UDMA/133
nada:~# lsscsi -l
[0:0:0:0] disk ATA Maxtor 7Y250M0 YAR5 /dev/sda
state=running queue_depth=1 scsi_level=6 type=0 device_blocked=0 timeout=30
nada:~# hdparm /dev/sda
/dev/sda:
HDIO_GET_MULTCOUNT failed: Operation not supported
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 30515/255/63, sectors = 251000193024, start = 0
nada:~# hdparm -c /dev/sda
/dev/sda:
IO_support = 0 (default 16-bit)
nada:~# hdparm -c1 /dev/sda
/dev/sda:
setting 32-bit IO_support flag to 1
HDIO_SET_32BIT failed: Invalid argument
IO_support = 0 (default 16-bit)
How can I make 32bit IO active ?
TIA
--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandrakelinux release 10.1 (Community) for i586
Linux 2.6.9-jam1 (gcc 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)) #4
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Setting 32bit IO on SATA drives
2004-10-26 21:50 Setting 32bit IO on SATA drives J.A. Magallon
@ 2004-10-26 23:01 ` Jeff Garzik
2004-10-27 2:19 ` Mark Lord
1 sibling, 0 replies; 4+ messages in thread
From: Jeff Garzik @ 2004-10-26 23:01 UTC (permalink / raw)
To: J.A. Magallon; +Cc: Lista Linux-Kernel
J.A. Magallon wrote:
> How can I make 32bit IO active ?
32bit isn't relevant if you are using DMA.
libata is hardcoded to use 16bit PIO data transfers.
Jeff
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Setting 32bit IO on SATA drives
2004-10-26 21:50 Setting 32bit IO on SATA drives J.A. Magallon
2004-10-26 23:01 ` Jeff Garzik
@ 2004-10-27 2:19 ` Mark Lord
2004-10-27 20:16 ` Bill Davidsen
1 sibling, 1 reply; 4+ messages in thread
From: Mark Lord @ 2004-10-27 2:19 UTC (permalink / raw)
To: J.A. Magallon; +Cc: Lista Linux-Kernel
> HDIO_GET_MULTCOUNT failed: Operation not supported
Fyi, I have removed that bogus error message from my
working copy of hdparm.
Cheers
--
Mark Lord
(hdparm keeper & the original "Linux IDE Guy")
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Setting 32bit IO on SATA drives
2004-10-27 2:19 ` Mark Lord
@ 2004-10-27 20:16 ` Bill Davidsen
0 siblings, 0 replies; 4+ messages in thread
From: Bill Davidsen @ 2004-10-27 20:16 UTC (permalink / raw)
To: linux-kernel, Mark Lord; +Cc: J.A. Magallon, Lista Linux-Kernel
Mark Lord wrote:
> > HDIO_GET_MULTCOUNT failed: Operation not supported
>
> Fyi, I have removed that bogus error message from my
> working copy of hdparm.
I thought it wasn't supported. I presume you mean you detected that the
operation should not be attempted rather than causing an error to fail
silently.
--
-bill davidsen (davidsen@tmr.com)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2004-10-27 20:20 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2004-10-26 21:50 Setting 32bit IO on SATA drives J.A. Magallon
2004-10-26 23:01 ` Jeff Garzik
2004-10-27 2:19 ` Mark Lord
2004-10-27 20:16 ` Bill Davidsen
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