RE: PROMISE Ultra133 TX2 (PDC20269)

From: Piszcz, Justin Michael
Date: Fri Nov 12 2004 - 10:52:10 EST


Odd, what speed did you get with UDMA2? UDMA3?
Any errors in dmesg other then the ones you pasted?

Also, when benchmarking with hdparm (as it states in the man page, it is
good to run it 3 times for each run and take the average) as it can vary
sometimes.

I have also noticed if you are running hdparm -t /dev/hde when running
X, window manager, etc, I get 8-10MB/s less vs. when I run it in single
user mode.



-----Original Message-----
From: linux-kernel-owner@xxxxxxxxxxxxxxx
[mailto:linux-kernel-owner@xxxxxxxxxxxxxxx] On Behalf Of Enrico Bartky
Sent: Friday, November 12, 2004 10:44 AM
To: linux-kernel@xxxxxxxxxxxxxxx
Subject: RE: PROMISE Ultra133 TX2 (PDC20269)

mysterios, .. now it says udma4 but with 7 MB/s

schrottkiste:~# hdparm -I /dev/hde

/dev/hde:

ATA device, with non-removable media
Model Number: FUJITSU MPD3084AT
Serial Number: 01064533
Firmware Revision: DD-03-44
Standards:
Supported: 4 3 2 1
Likely used: 4
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 16514064
device size with M = 1024*1024: 8063 MBytes
device size with M = 1000*1000: 8455 MBytes (8 GB)
Capabilities:
LBA, IORDY(cannot be disabled)
Buffer size: 512.0kB bytes avail on r/w long: 4 Queue
depth: 1
Standby timer values: spec'd by Vendor
R/W multiple sector transfer: Max = 16 Current = ?
Advanced power management level: unknown setting (0x0000)
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
READ BUFFER cmd
WRITE BUFFER cmd
Host Protected Area feature set
* Look-ahead
* Write cache
Power Management feature set
Security Mode feature set
SMART feature set
Advanced Power Management feature set
Security:
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
24min for SECURITY ERASE UNIT.
schrottkiste:~# hdparm -t /dev/hde

/dev/hde:
Timing buffered disk reads: 26 MB in 3.45 seconds = 7.53 MB/sec
schrottkiste:~#




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