Windows Vista Forums

Avg. Disk queue length

  1. #1



    Newbie
    Join Date : Mar 2008
    Posts : 6
    Business x64
    Local Time: 07:14 AM

    Avg. Disk queue length

    After doing a check on the health and performances of my comp,

    the program gives me a red flag for the Avg Disk Queue Lengh with a average of 2, minimum of 1 and a max of 6

    I have Western Digital Caviar RE 320 Gb * 3 raid 5 (so good and fast disks)

    they are only 1/32 full so lots of room, the disk is defragged, all temps files are binned

    As you can see by my comp details I have a good setup, so why do I have such bad readings ???

    any help would be helpful

      My System SpecsSystem Spec

  2.   


  3. #2



    Newbie
    Join Date : Mar 2008
    Posts : 6
    Business x64
    Local Time: 07:14 AM


      Thread Starter

    Re: Avg. Disk queue length

    after reading up, it seems that if I transfert my raid 5 to a raid 1 or 0 setup it might makes things faster

    Anybody ???????

      My System SpecsSystem Spec

  4. #3


    Ken Blake, MVP Guest

    Re: Avg. Disk queue length

    On Tue, 1 Jul 2008 07:06:19 -0500, shazbot <guest@xxxxxx-email.com>
    wrote:

    >
    > after reading up, it seems that if I transfert my raid 5 to a raid 1 or
    > 0 setup it might makes things faster

    That's a very strange question. RAID 0 and RAID 1 are completely
    different and used for very different purposes. To think of them as
    alternatives is certainly very odd.

    RAID 0, in theory, will speed up the computer over no RAID, but in
    practice, it usually does so so little as to be unnoticeable.
    Considering that it also greatly increases the risk to your data, I
    recommend against it.

    I don't know anything about the relative speeds of RAID 1 and RAID 5.

    RAID 1, as I said, is completely different. It's mirroring, used for
    redundancy, not performance.


    > EVGA 132-CK-NF780-A1, BIOS 05
    > Intel X6800@xxxxxx
    > Video Asus EN8800GTX
    > Western Digital Caviar RE 320 Gb * 3 raid 5
    > Western Digital Caviar RE 250 Gb * 1
    > Hitachi Deskstar 7K1000 1 To * 1
    > G-Skill F2-8000CL5D-4GBPQ (2GB x 2) now not used
    > Corsair 2x4096 - 8500C5DF
    > Monitor SyncMaster 930B(Digital)* 2
    > Antec Truepower Quattro 850 power supply
    > Vista Business 64bit
    > Noctua NH-U12P
    > Case Cooler Master Cosmos 1000
    > Azuntech X-Fi Prelude sound card
    > Steelpad keyboard, Logitech G5 Mouse
    --
    Ken Blake, Microsoft MVP - Windows Desktop Experience
    Please Reply to the Newsgroup

      My System SpecsSystem Spec

  5. #4



    Newbie
    Join Date : Mar 2008
    Posts : 6
    Business x64
    Local Time: 07:14 AM


      Thread Starter

    Re: Avg. Disk queue length

    Hi

    well it was the raid 5 that was the culprit

    Raid 5 is far more complex than 0 or 1 and fore on-board cards, changing my set-up back to raid 0 solved the problem straight away,

    I can actually see the difference as just opening HD and windows is far faster

    I think that I shall order a raid car and play around some more,

    Raid 5 I'm sure will work better on a Raid card and I will get better band with thru a card than on the MB, therefore getting even better transfer rates

      My System SpecsSystem Spec

  6. #5


    Mitra Guest

    Re: Avg. Disk queue length

    Ken,

    When I do a system health check I get the following information/message
    "Average disk queue length is 3. The disk may be at its maximum transfer
    capacity due to throughput and disk seeks"

    What does this mean and what do iI do about it. I'm not even sure which
    disc it is referring to, I have 2 internal drives and 3 external drives.

    Thanks for your help.

      My System SpecsSystem Spec

  7. #6



    Newbie
    Join Date : Mar 2008
    Posts : 6
    Business x64
    Local Time: 07:14 AM


      Thread Starter

    Re: Avg. Disk queue length

    if I understood all of it correctly it basically means that this is a traffic jam while reading writing to the hard disc, that why you see sometimes the little blue ring in vista going around as its thinking

    Have you only one HD, or do you have a raid set-up ?, as you didn't post your sig so we don't know your set-up

      My System SpecsSystem Spec


Avg. Disk queue length
Similar Threads
Thread Forum
Re: VMs & Processor Queue Length Virtual Server
average disk queue length Vista performance & maintenance
how can i increase avg. disk queue length? Vista performance & maintenance
Average Disk Queue Length high (mean=5, max 22) Vista x64 (help?) Vista General
how to improve disk queue length vista Vista performance & maintenance