2.5 Mins of Prefetching at Startup

Discussion in 'Windows Vista Performance' started by Gideon_CC, Jun 16, 2007.

  1. Gideon_CC

    LoneStar Guest

    I have a Dell Vista Home Premium, and I get the same startup prefetching.
    No worries: I just let it go for 4 minutes or so, then start my work/play.

    Your message regarding the Events Viewer: I check this all the time and am
    amazed at some of the "warnings" and "errors" I get. Every day at bootup I
    get a tcpip error and a dhcp error (or warning). I get several "hash" crap
    violations here and there (whatever that means) and loads of others. Upon
    shutdown, I get User Profile errors (which show up on the next boot). ALL
    THE WHILE, my Vista runs perfectly, and I run EVERYTHING on it just to make
    sure. Note: occasionally, my Control Panel and some other stuff won't open
    without rebooting, but I've already run that subject on this newsgroup
    enough (and got no answer).

    All in all, I don't mind the prefetching -- everything I normally use opens
    up in a second!

    EW

    PS: Of more worry to me (and a throng of others) is WTF is the problem with
    Vista file sharing!!!!!
     
    LoneStar, Jun 17, 2007
    #21
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  2. Gideon_CC

    Gideon_CC Guest

    Thanks for that reply.
    Yes, my Vista is also Dell - not sure if the Prefetching is to do with Dell,
    not sure why it could be, but you know Dell, they fill the system with sh**
    all the time.

    I don't get errors popping up or anything - just noticed those small
    warning/errors on that Event Viewer. I haven't noticed any problems with
    anything. It seems to be on that one day so it could be related to something
    else and wont occur again, no errors on that since that date (23rd).

    I just find that Prefetching annoying and that constant hard disk usage.

    Do you also notice the hard disk light flashing every 2-4 secs, sometimes
    every second?
     
    Gideon_CC, Jun 18, 2007
    #22
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  3. Gideon_CC

    Rock Guest

    Prefetching at startup is due to Vista, it has nothing to do with any 3rd
    party software that Dell has installed.
    Leave the system on overnight Then it will do all the maintenance and
    obviously you don't have to deal as often with the heavy prefetch activity
    at start up, though the system constantly reassesses what is being done as
    you work and adjusts what is loaded in RAM for caching.

    I rarely turn the system off. A system reliability report shows the system
    drive idle time is above 80%.
     
    Rock, Jun 18, 2007
    #23
  4. Gideon_CC

    Gideon_CC Guest

    What do you mean the system drive idle time is 80%..
    Shouldn't system CPU be at below 10% when idle.. more like between 2-10%?
    Maybe I miss understand what you meant?

    I could leave it on one night but system doesn't seem to do anything when
    it's on - only during startup. I find it strange that some people get
    something similar but some don't when my Supefetch settings haven't been
    changed to my knowledge.
     
    Gideon_CC, Jun 18, 2007
    #24
  5. Gideon_CC

    Rock Guest

    It means the drive, not the CPU, that contains the volume on which the OS
    is installed is idle over 80% of the time - i.e. no disk access - the drive
    isn't doing anything.

    Yes prefetch runs when the computer is restarted and periodically during
    use. I haven't seen anyone post that they don't see the same behavior. You
    are beating a dead horse here, and I don't understand why. Prefetch runs
    heavily when the computer is first started to populate RAM.
     
    Rock, Jun 18, 2007
    #25
  6. Gideon_CC

    Gideon_CC Guest

    How do I find a report to see when my hard disk is idle like yours is 80% of
    time.
    My hard disk light flashes every 2-4 seconds, sometimes every second - even
    when idle. It somtimes flashes after a slighly longer period if it is idle
    properly with no programs.
     
    Gideon_CC, Jun 18, 2007
    #26
  7. Gideon_CC

    Rock Guest

    Right click Computer | Properties | Performance (bottom of left pane) |
    Advanced Tools | Generate a system health report (last entry). It will take
    a minute to run. The data on the drivers is one of the last categories.
     
    Rock, Jun 18, 2007
    #27
  8. Gideon_CC

    Rock Guest

    Additional once a report is generated you can later review the contents of
    the last report at a later time from Reliability and Performance Monitor |
    Reports | System | System Diagnostics.
     
    Rock, Jun 18, 2007
    #28
  9. Gideon_CC

    Gideon_CC Guest

    Gideon_CC, Jun 18, 2007
    #29
  10. Gideon_CC

    Gideon_CC Guest

    Gideon_CC, Jun 18, 2007
    #30
  11. Gideon_CC

    LoneStar Guest

    Quick reply: yes, my Dell XPS 410's hard drive LED flashes every second, or
    so. I don't have a clue why, but it does, and all's well. Note: I have
    indexing disabled, hardly any scheduled tasks running, etc. Who knows!

    EW
     
    LoneStar, Jun 19, 2007
    #31
  12. Gideon_CC

    Rock Guest

    How about looking through all the sections They are quite a few and are
    expandable. Maybe even look under the "Disk" category?
     
    Rock, Jun 19, 2007
    #32
  13. Gideon_CC

    Gideon_CC Guest

    Gideon_CC, Jun 19, 2007
    #33
  14. Gideon_CC

    Rock Guest

    I think yours has 96% under Physical Disk Percent Idle Time.
     
    Rock, Jun 19, 2007
    #34
  15. Gideon_CC

    Gideon_CC Guest

    Is that bad? What does it mean?
    How do I lower it if it helps?
     
    Gideon_CC, Jun 19, 2007
    #35
  16. Gideon_CC

    Rock Guest

    That's good. High percent idle.
     
    Rock, Jun 19, 2007
    #36
  17. Just to clarify a couple of points and the terminology being used.
    The major disk activity you see after a boot is not prefetchoing but to be
    more accurate is ReadyBoot running and calculating the prefetch paths to
    seed up to the boot process. This is done after every successful boot to
    calculate the new boot-time cache plan.
    This is then written out to disk.
    Once that is done you are then in the hand of SuperFetch which monitors your
    application and data load activity constantly. This allows it to watch what
    you do and also when you do it, so it can build a load plan that will pre
    fetch from disk the majority of an application that you always run at a
    certain time of day etc.
    This means that there is data almost always being written to the SuperFetch
    scenario data files on disk hence more disk activity and then read from disk
    to the SuperFetch memory cache.
     
    Mike Brannigan, Jun 19, 2007
    #37
  18. Gideon_CC

    Gideon_CC Guest

    So, would you say the disk flashing every 1-5 secs normally when idle etc is
    normal?
     
    Gideon_CC, Jun 19, 2007
    #38
  19. Yes.
    Just staring at 2 laptops and 3 PCs at the moment and all have 1 to 5 second
    minute disk IO flashes.
    These system have a variety of products installed that will use idle time
    such as Diskeeper, the indexer, and of course the SuperFetch, ReadyBoot and
    for the ones with USB memory sticks inserted or hybrid hard disks,
    ReadyBoast and ReadyDisk.
    So personally as none of these have a negative impact on performance if I
    actually do some work I would say your HD flashes are perfectly normal.
     
    Mike Brannigan, Jun 19, 2007
    #39
  20. Gideon_CC

    Gideon_CC Guest

    I have indexing on drive C unticked and don't have many products that would
    use a lot of background stuff. I have AVG, MSN running currently. Defender is
    also but the interface is not loaded at startup, just the service so it does
    stuff at startup. I have no USB stick in either. It on average flashes every
    2-3 secs.
     
    Gideon_CC, Jun 19, 2007
    #40
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