Dual G5 Trouble

in Genius Bar edited January 2014
I received my dual G5 system yesterday and began using in a production environment. I loaded After Effects on the machine then started transferring large gig file over the network. I immediately noticed that the transfer to the hard drive was sluggish in comparison to the G4. I then tryed transfering a file to itself just another folder. This as well seemed sluggish. Finally I began a heavy render in After Effect and noticed that it was taking way to long. I tried the same render on the G4 and it rendered 3 times faster. Could there be issues with the new Serial ATA drives that apple it using, or am I the unlucky one that got a lemon hard drive?


  • Reply 1 of 6
    jccbinjccbin Posts: 476member
    What's that smell?

    Did you check your network? What speed is the ethernet 10bt, 100bt, 1000bt (not what is it supposed to be- check out the switch/hub) ?

    Seemed sluggish? How long did it take, in seconds? When you do it on a G4, how long does it take - the file duplication? What kind of drives do you have on the G4?

    How much RAM do you have on the G5?

    All these things, and more, play a role in how fast a dupe is made.

    Network traffic also plays a role in how fast a file will transfer. If you are using a 100bt hub and others are using the network, they affect how fast your transfer occurs. P'raps this should be a Genius Bar matter?
  • Reply 2 of 6
    I'm running a gigabit switch. The line is the same network connection that the G4 was on. the G4 has the factory Hard drive in it, 120 gb ultra ATA. the network will have nothing to do with it coping a file to itself. both machines are running 1.5gb of ram.

  • Reply 3 of 6
    jccbinjccbin Posts: 476member
    Ok, a gigE switch should eliminate the issues of the network. But did you time the copying time? I ask because it's possible that the Mac is not performing at gigE speeds, merely at 100BT speeds. Knowing the time to copy will likely answer this for us.

    Also, download a copy of Cocktail from www.versiontracker.com, and use it to force the ethernet on the Mac to use gigE, just for kicks.

    The copying is very likely an issue with the OS. The hardware is more than capable of taking the information as fast as the HD can send it. Typically, the OS asks for X amount of data, as it determines from its available memory and other in-process business, the HD delivers it to the RAM, then the OS copies it back to the HD.

    The HD is pretty much solid regarding it's output speed, but the 10.2.7-G5 OS is very much a hack. A test of this might be to copy the same file using the Terminal or SIngle User Mode.

    You'd use the cp command.

    I think the syntax is

    PROMPT> cp sourcefile targetfile

    Yes, those are merely spaces between the command and between the filenames. Please note that the filename should NOT have spaces in the name (just for this test, since unix deals with spaces with funky substitute characters that make typing the filenames a pain.)

    When the prompt returns, the copy is done. If this is much faster than the GUI copy, the the OS is the bottleneck.

    As usuall, make sure you have a backup hidden away in case your copy screws the pooch in some nearly impossible way.
  • Reply 4 of 6
    What version of After Effects are you using? I'm experiencing excellent performance under 5.5.1.

    -- Mark
  • Reply 5 of 6
    g-newsg-news Posts: 1,107member
    go to the terminal and enter "top -u"

    without the quotes.

    Now you'll see an updating list of the processes going on, as well as some information about the RAM.

    See if there's anything taking away a lot of CPU % or/and if you're experiencing a lot of pageouts to the harddrive.

    Both can bog down a machine to almost zero.

  • Reply 6 of 6
    Technical support goes to the Genius Bar. Moving there now
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