12 Replies Latest reply: Feb 24, 2013 12:10 AM by angilo
angilo Level 1 (0 points)

can i assign what amount of ram TM uses, because it always
causes problems with other apps, from FireFox to Ableton Live,
even Finder...?


MacBook Pro, Mac OS X (10.7.5)
  • softwater Level 5 (5,370 points)

    No, you can't. The OS will determine the RAM allocation, which is a good thing .

     

    If you're having problems, there's something else wrong that needs fixing. What do you mean by

     

    'causes problems with other apps'??

  • angilo Level 1 (0 points)

    well it's a ram issue, so TM robs ram from other apps

     

    e.g. i'm busy recording in Ableton Live, and everything

    start to lag as soon as TM starts backing up

     

    i'm busy watching a video on YouTube, the streme slows
    down, the fucntions in FireFox or Safari in general lag

     

    if lag is the right term

     

    thanks for replying

  • Michael Black Level 7 (20,402 points)

    angilo wrote:

     

    e.g. i'm busy recording in Ableton Live, and everything

    start to lag as soon as TM starts backing up

     

     

    thanks for replying

     

    Doesn't sound like a RAM issue to me, sounds like a basic I/O issue.  Your recording is writing a lot of data to disc, and TM is reading a ton of data from disc to determine the incremental backup and write it out to the backup drive.  All that disc activity will be bound to slow the system down.

     

    The only fix I can see is to disable TM while you are recording.

  • angilo Level 1 (0 points)

    there's nothing wrong with my I/O

     

    ok, what about using Finder, or using the Calculator,

    how are those writng to disk in a conflicting way...?

     

    isn't writing to disk influenced by the amount of ram

    one has and how much is use by an app...?

  • Michael Black Level 7 (20,402 points)

    No, reading from and writing to disc are primarily influenced by the disc itself (how fast it is, how big an onboard cache it has) and the I/O bus bandwidth (basically how big a pipe, and how fast it flows, between the logic board and the drive).  Has very little at all to do with RAM.  The more data that you are pushing or pulling simultaneiously to/from the drive, the slower the system will be.

  • angilo Level 1 (0 points)

    ok, so why does Apple invent a product like TM that can't handle
    this... I am backing-up to Time Capsule, Apple all the way

     

    do you have any idea why this is happening, why does it effect

    such seemingly mundane opperations like Finder for example...?

  • Michael Black Level 7 (20,402 points)

    Any time disc activity gets high enough, your entire system will slow down - that is inherent in every computer and always has been.  It has nothing to do with the app per se, but the hardware has inherent limitations in how much data it can move, and how fast it can move it, in any given time.  Finder is also reading data from the same hard drive, over the same data I/O bus as TM and every other app you have running - they all share the same pipeline to the data volume.

     

    TM can indeed "handle it" - do your backups proceed successfully?  Does your computer continue to process other tasks while TM is running (albeit at a slower pace)?  But until the I/O load drops, system performance will be what it is.

     

    You can upgrade your machine to a newer, faster device.  You could replace your hard drive with a faster solid state drive.  You could replace your over the air Time Capsule with a high end, faster local hard drive on a very fast wired connection (a firewire 800 or lightening external drive).

     

    But no system has infinite performance capabilities - everything is limited, and when you push one of those criticial limits, like high volume disc input/output, the system will inherently slow down until that load diminishes.

  • angilo Level 1 (0 points)

    i get what you say... although to me this seems like
    buying a race ready bike, only to find out it can't handle

    what it's been made to do

     

    i will have to get by with the current setup, especially the

    wifi part, Time Captual needs to be hidden, i'm not loosing

    years of work because some fool steals my backup HD

    again

     

    ok, last Question; is there a way or a thirdparty app i can

    use, that will allow me to schedule TM backups...?

  • Michael Black Level 7 (20,402 points)

    There is an app called TM Scheduler, but I have no experience with it.  Even with it, all you can do is change the interval between backups, not actually schedule a specific time (TM simply does not have that capability).

     

    The default is to do a backup every hour (or actually, every 3600 seconds as the backup interval is literally set in seconds).  So you can say, change the interval to 43200 seconds, or a backup every 12hours (which is what I use for my TM backups).

  • angilo Level 1 (0 points)

    cool thanks for info and your time

  • angilo Level 1 (0 points)

    i found this TimeMachineEditor, an actual time Scheduler

    http://www.macupdate.com/app/mac/26704/timemachineeditor

     

    it seems like people are happy with it

     

    i have thought of a important question; TM at times tells me

    that it can't find the backupdisk/drive or something, this used to be

    a complicated issue for me, because i could find the problem

     

    my resolution to this was to go into AirPort Utility's Internet

    settings, swop the DHCP to Static, update, then swop it back,

    then update again... is there an easier way to update AirPort

    Utility settings than this stupid way of mine...? it works though

  • angilo Level 1 (0 points)

    TimeMachineEditor is working well, set it to backup at 02:30am for

    two nights in a row at this point, and no problems

     

    this is making me really happy