Results 1 to 3 of 3

Thread: WL-HDD IDE Speed -- Could be faster?

  1. #1

    WL-HDD IDE Speed -- Could be faster?


    I have an ATA-100 drive in my WL-HDD and I suspect that it's running slower than 100MHz. Based on some other WL-HDD performance discussions, this may not matter in the grand scheme of things, but I'm still curious. I was sifting through the kernel log and early on it says:

    kernel: ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx

    Later, I see:

    kernel: ide0: BM-DMA at 0x0140-0x0147, BIOS settings: hdaMA, hdbio

    which suggests that my harddrive (hda) is actually using DMA and not PIO. So far so good. Later still I see:

    kernel: hda: 195371568 sectors (100030 MB), CHS=12161/255/63, UDMA(33)

    which suggests that I'm using UDMA (good) but only at 33MHz (bad). At the shell prompt, cat /proc/ide/hda/settings reports (among other things):

    name value min max mode
    current_speed 66 0 69 rw
    using_dma 1 0 1 rw

    Does this mean the harddrive is actually using UDMA66? Can I jack it up to 100 somehow?


  2. #2
    Join Date
    Apr 2004
    I guess that any (U)DMA speed: 33, 66, 100 or 133 will give you the same performance and that the critical part of the performance is the (U)DMA/PIO setting. A harddisk with (U)DMA 33 speed will deliver far more data to the processor than the processor can handle.

  3. #3
    Use hdparm to adjust your harddisk settings... but you wont get any faster speed than 6-8 MB/s at all.
    hdparm is not in Oleg's firmware, so you have to get it via ipkg or search for it in the forum.

    Test your speed with: hdparm -t /dev/discs/disc0/disc

Similar Threads

  1. Custom Firmware any faster?
    By Leehro in forum WL-HDD Q&A
    Replies: 0
    Last Post: 11-09-2005, 05:43
  2. slow speed in msn
    By tthen in forum WL-500g Q&A
    Replies: 0
    Last Post: 18-02-2005, 20:22
  3. FTP and speed question
    By ebk71 in forum WL-HDD Q&A
    Replies: 1
    Last Post: 12-01-2005, 12:38
  4. FASTER PRINTING: extra printer memory
    By xlephant in forum WL-500g Custom Development
    Replies: 1
    Last Post: 29-10-2004, 13:52

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts