Tried on few systems, checked google but couldnt find the reason why its not shown.
some of the tests:
iostat -x hda2 5 iostat -x /dev/hda2 5 iostat -x hda 5 iostat -x 5 and so on.
im using Debian woody & kernel 2.6.x tried both on IDE system and SCSI system
Any idea ?
Ez-Aton wrote:
You could use measurement tools, for example:
dd if=/dev/sda of=/dev/null
and in the meanwhile, measure the speed using iostat:
iostat -x /dev/sda -kt 5
(-x device -Kilobyte -refresh every 5 seconds)
The stats in /proc show what's the bus speed, which is nice, but not very usefull (you know your max speed).
Ez.
Michael Ben-Nes wrote:
Hi All
I use raid 1 with:
Mylex AcceleRadi 170 that support U160 One HD is IBM 18GB U160 the second HD is Maxtor 36 GB U320.
Under proc i read: Wide Synchronous at 40 MB/sec How do i know if they work at their max rate ( 160 ) ?
[EMAIL PROTECTED] c0]# cat current_status ***** DAC960 RAID Driver Version 2.4.11 of 11 October 2001 ***** Copyright 1998-2001 by Leonard N. Zubkoff <[EMAIL PROTECTED]> Configuring Mylex AcceleRAID 170 PCI RAID Controller Firmware Version: 6.00-01, Channels: 1, Memory Size: 32MB PCI Bus: 2, Device: 13, Function: 1, I/O Address: Unassigned PCI Address: 0xEF000000 mapped at 0xF8800000, IRQ Channel: 12 Controller Queue Depth: 512, Maximum Blocks per Command: 2048 Driver Queue Depth: 511, Scatter/Gather Limit: 128 of 257 Segments Physical Devices: 0:1 Vendor: MAXTOR Model: ATLAS10K4_36SCA Revision: DFV0 Wide Synchronous at 40 MB/sec Serial Number: B2T73CNM Disk Status: Online, 35807232 blocks 0:2 Vendor: IBM Model: DDYS-T18350M Revision: SA2A Wide Synchronous at 40 MB/sec Serial Number: UED29146 Disk Status: Online, 35807232 blocks 0:7 Vendor: MYLEX Model: AcceleRAID 170 Revision: 0600 Wide Synchronous at 160 MB/sec Serial Number: Logical Drives: /dev/rd/c0d0: RAID-1, Online, 35807232 blocks Logical Device Initialized, BIOS Geometry: 255/63 Stripe Size: 64KB, Segment Size: 8KB Read Cache Disabled, Write Cache Disabled No Rebuild or Consistency Check in Progress
Bye
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