What is trim!!!

Discussion in 'MacBook Pro' started by NZed, Feb 4, 2011.

  1. NZed, Feb 4, 2011
    Last edited: Feb 5, 2011

    NZed macrumors 65816

    NZed

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    Canada, Eh?
    #1
    First off, what is TRIM?
    second, is TRIM hardware or software? or both?
    if its software, do YOU think apple will include TRIM support in Lion?

    Im looking to buy an SSD btw so i was wondering

    TIA!!!

    BTW i did GOOGLE and i didnt really understand any of them except for wikipedia but i was still confused so i asked
     
  2. SmokeyRobinson macrumors regular

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    Dec 11, 2010
    #2
    It's whats been on my Windows computer with an SSD and not your mac.
     
  3. greytmom macrumors 68040

    greytmom

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  4. simsaladimbamba

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    #4
    http://forums.macrumors.com/showthread.php?p=11846647#post11846647

    Yep, one of many reasons.

    You did what? Blasphemy, you will burn in the fires of the long shadow. How dare you.
     
  5. milbournosphere macrumors 6502a

    milbournosphere

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    #5
    http://en.wikipedia.org/wiki/TRIM

    Google's your friend.

    TRIM is needed / used because of the way that an SSD interfaces with the Operating System. There are no sectors and such on an SSD, but in order to have the OS recognize it as a traditional hard drive, it emulates the structure of a traditional spinning hard drive. This is all well and good, but this low level operation leads to performance degradation over time as more and more bits get used.

    SSDs don't flip their bits back to 0 once they're freed up (until you Zero it out, that is). This, of course, will reduce performance over time. This is where TRIM comes in. It helps identify those pages/blocks of bits that are no longer in use, and 0's them out.

    OS X does not have this feature, but Zeroing out the drive should suffice. For more, read that Wikipedia article, it really explains it well. I had a power-point lecture from a professor that is researching SSD write optimization, but seem to have misplaced it.
     
  6. NickZac macrumors 68000

    NickZac

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    #7
    Something that is not nearly as important for computers or solid state drives as it is for keeping a neat appearance.

    TRIM (or lack of) on most modern SSDs is not a major issue as the wear issues are grossly overstated and most controllers have their own optimization mechanisms that will keep the SSD running well for as long as possible.
     
  7. NZed thread starter macrumors 65816

    NZed

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    #8
    thanks to all!

    I DID try googling but i couldnt really understand them(im a noob and newbie)
    i just thought that if i asked you guys, i'd get the answers more humanly not
    some hard to understand computer language


    thnx neways...

    and for those guys who was being rude, why not try googling it and explaining it to me so that a newbie like me would understand...
     
  8. NZed, Feb 4, 2011
    Last edited by a moderator: Feb 5, 2011

    NZed thread starter macrumors 65816

    NZed

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    #9
    cause i did and i didnt ******* understand any of them(except wikipedia, which was a still confusing thats why i asked)
     
  9. simsaladimbamba

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    #10
    Yeah, we come off harsh. In the future you can prevent this via just mentioning, that you did search for it but could not understand the meaning of it and link to the sources you have found.
    That way we will be more at peace with ourselves and may provide another link or even explain it.
    Or not. Who knows.
     
  10. NZed thread starter macrumors 65816

    NZed

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    #11
    Thanks! I'll keep that on my mind...

    Anyways, so from what i read and came to understand, TRIM is software. So do you guys think that OSX will support TRIM in the future(hopefully near future)?

    Thanks again!
     
  11. dusk007 macrumors 68040

    dusk007

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    #12
    It is software but it is very low level. File system level that hasn't changed in a while. Windows file system and OSX is different and apparently there are some reasons why it is more difficult with HFS+ compared to NTFS.

    It is not really needed. If an SSD has enough spare and good garbage collection it will work fine without ever needing trim support. It is still better with TRIM because the controller has more info and can do wear leveling with less wear and thus a longer life for the SSD at the same performance.

    The SSDs in the MBA from Toshiba do a good job of keeping performance up but I think those SSDs would last long in Server workload. With private workload I guess it depends.
     
  12. walshlink macrumors regular

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  13. TPadden, Feb 5, 2011
    Last edited: Feb 5, 2011

    TPadden macrumors 6502a

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    #14
    He said it's a toggle on a boat that makes a leveling plane (trim tabs) on the stern go up and down. :p

    [​IMG]
     
  14. NZed thread starter macrumors 65816

    NZed

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    #15
    i did, and he asked me what are SSDs
    lol
     
  15. NZed thread starter macrumors 65816

    NZed

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    #16
    sadly, im not that rich to own a private boat
     
  16. NZed thread starter macrumors 65816

    NZed

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    #17
    Virus, its what been on Windows and not my mac
     
  17. zenio macrumors 6502

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    Feb 2, 2011
    #18
    TRIM is the word you put in the Google search field. :)
     
  18. TPadden macrumors 6502a

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    #19
    Mine said it was a virus you got if you went to a house of ill-repute :eek:!
     
  19. NZed thread starter macrumors 65816

    NZed

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    #20
    READING ALL THE POST IN THIS THREAD FIRST IS WHAT I RECOMMEND YOU TO DO.

    Since i mentioned in later replies that i did GOOGLE it...
     
  20. NZed thread starter macrumors 65816

    NZed

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    #21
    I think he was talking about STDs
    lol
     
  21. jvmxtra macrumors 65816

    jvmxtra

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    #22
    All I have to say is even if somehow TRIM is far superior and therefore windows are rocking and osx degrade over time, there is no way to verify it since all my window machine gets reformatted every 4 to 6 month due to OS inefficiency and virus so there really is no fair comparison to do. :)
     
  22. NickZac macrumors 68000

    NickZac

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    #23
    Everybody look at me 'cause I'm sailing on a boat.
     

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