RE: ATA Speed
You can use the hdparm utility to discover what mode your disks are
operating in. Notice the second-to-last line that begins with 'DMA modes:'.
The '*' next to udma4 indicates it is operating in that mode, which equates
to something commonly called ATA/66. :-)
intrepid:/home/jsw# hdparm -i /dev/hdc
/dev/hdc:
Model=Maxtor 96147U8, FwRev=BAC51KJ0, SerialNo=N8046RBC
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=16514064, LBA=yes, LBAsects=120060864
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
Kernel Drive Geometry LogicalCHS=7473/255/63
- jsw
-Original Message-
From: R K [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 03, 2001 6:49 PM
To: debian-isp@lists.debian.org
Subject: ATA Speed
Does the following mean that Linux is only using my ide bus at ata33 speeds?
Or more accurately not using the full ata100 mode?
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
I've seen nothing from dmesg to indicate that it's doing otherwise. Does it
configure it as 33 and then still use it to it's full potential or does it
impose restrictions on itself? Even if this doesn't have anything to do
with it, how would I verify that Linux is using the hardware to its full
potential?
Thanks in advance
Re: ATA Speed
On Tue, 3 Jul 2001, R K wrote: > Does the following mean that Linux is only using my ide bus at ata33 > speeds? Or more accurately not using the full ata100 mode? > > ide: Assuming 33MHz system bus speed for PIO modes; override with > idebus=xx > > I've seen nothing from dmesg to indicate that it's doing > otherwise. Does it configure it as 33 and then still use it to it's > full potential or does it impose restrictions on itself? Even if this > doesn't have anything to do with it, how would I verify that Linux is > using the hardware to its full potential? Did you note that it said 33MHz and not 33 MB/s ?? And did you note that it says PIO mode, while ata100 is a DMA mode ?? Entering that message into Google got me the following url: http://list.cobalt.com/pipermail/cobalt-users/2001-May/042555.html which quotes another message (I am too lazy to find the original) which clearly explains what this message means. -- Tot ziens, Bart-Jan
Re: ATA Speed
ATA100 != 100Mhz pci bus. All that's doing is reporting the pci bus (to which the ide controller is attached). Nothing more, nothing less. All cards/controllers attached to your pci bus will run at that same speed. HTH. On Tuesday 03 July 2001 03:49 pm, R K wrote: > Does the following mean that Linux is only using my ide bus at ata33 > speeds? Or more accurately not using the full ata100 mode? > > ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx > > I've seen nothing from dmesg to indicate that it's doing otherwise. Does > it configure it as 33 and then still use it to it's full potential or does > it impose restrictions on itself? Even if this doesn't have anything to do > with it, how would I verify that Linux is using the hardware to its full > potential? > > Thanks in advance -- "To me vi is Zen. To use vi is to practice zen. Every command is a koan. Profound to the user, unintelligible to the uninitiated. You discover truth everytime you use it." [EMAIL PROTECTED] [EMAIL PROTECTED]
ATA Speed
Does the following mean that Linux is only using my ide bus at ata33 speeds? Or more accurately not using the full ata100 mode? ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx I've seen nothing from dmesg to indicate that it's doing otherwise. Does it configure it as 33 and then still use it to it's full potential or does it impose restrictions on itself? Even if this doesn't have anything to do with it, how would I verify that Linux is using the hardware to its full potential? Thanks in advance
RE: ATA Speed
You can use the hdparm utility to discover what mode your disks are
operating in. Notice the second-to-last line that begins with 'DMA modes:'.
The '*' next to udma4 indicates it is operating in that mode, which equates
to something commonly called ATA/66. :-)
intrepid:/home/jsw# hdparm -i /dev/hdc
/dev/hdc:
Model=Maxtor 96147U8, FwRev=BAC51KJ0, SerialNo=N8046RBC
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=16514064, LBA=yes, LBAsects=120060864
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
Kernel Drive Geometry LogicalCHS=7473/255/63
- jsw
-Original Message-
From: R K [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 03, 2001 6:49 PM
To: [EMAIL PROTECTED]
Subject: ATA Speed
Does the following mean that Linux is only using my ide bus at ata33 speeds?
Or more accurately not using the full ata100 mode?
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
I've seen nothing from dmesg to indicate that it's doing otherwise. Does it
configure it as 33 and then still use it to it's full potential or does it
impose restrictions on itself? Even if this doesn't have anything to do
with it, how would I verify that Linux is using the hardware to its full
potential?
Thanks in advance
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: ATA Speed
On Tue, 3 Jul 2001, R K wrote: > Does the following mean that Linux is only using my ide bus at ata33 > speeds? Or more accurately not using the full ata100 mode? > > ide: Assuming 33MHz system bus speed for PIO modes; override with > idebus=xx > > I've seen nothing from dmesg to indicate that it's doing > otherwise. Does it configure it as 33 and then still use it to it's > full potential or does it impose restrictions on itself? Even if this > doesn't have anything to do with it, how would I verify that Linux is > using the hardware to its full potential? Did you note that it said 33MHz and not 33 MB/s ?? And did you note that it says PIO mode, while ata100 is a DMA mode ?? Entering that message into Google got me the following url: http://list.cobalt.com/pipermail/cobalt-users/2001-May/042555.html which quotes another message (I am too lazy to find the original) which clearly explains what this message means. -- Tot ziens, Bart-Jan -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: ATA Speed
ATA100 != 100Mhz pci bus. All that's doing is reporting the pci bus (to which the ide controller is attached). Nothing more, nothing less. All cards/controllers attached to your pci bus will run at that same speed. HTH. On Tuesday 03 July 2001 03:49 pm, R K wrote: > Does the following mean that Linux is only using my ide bus at ata33 > speeds? Or more accurately not using the full ata100 mode? > > ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx > > I've seen nothing from dmesg to indicate that it's doing otherwise. Does > it configure it as 33 and then still use it to it's full potential or does > it impose restrictions on itself? Even if this doesn't have anything to do > with it, how would I verify that Linux is using the hardware to its full > potential? > > Thanks in advance -- "To me vi is Zen. To use vi is to practice zen. Every command is a koan. Profound to the user, unintelligible to the uninitiated. You discover truth everytime you use it." [EMAIL PROTECTED] [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
ATA Speed
Does the following mean that Linux is only using my ide bus at ata33 speeds? Or more accurately not using the full ata100 mode? ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx I've seen nothing from dmesg to indicate that it's doing otherwise. Does it configure it as 33 and then still use it to it's full potential or does it impose restrictions on itself? Even if this doesn't have anything to do with it, how would I verify that Linux is using the hardware to its full potential? Thanks in advance
