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Thread: SWAP files and SSDs

  1. #17
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    Re: SWAP files and SSDs

    Quote Originally Posted by DanceswithUnix View Post
    As I said, I really would leave it a day or two and get a delta between the two readings.

    SSD wear for all but the most intense use is a non issue.
    Highlighted for emphasis. This is absolutely correct. Even with TLC NAND SSD's

    Even with your initial high writes of 80GB/Day its still not a concern.

    After 5 years (likely even with high usage probably less than half way through its lifespan) a replacement at the same capacity will be cheap.
    "In a perfect world... spammers would get caught, go to jail, and share a cell with many men who have enlarged their penises, taken Viagra and are looking for a new relationship."

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    Re: SWAP files and SSDs

    There is no simple answer to this, even the experts at Intel can't agree (Who work in the SSD division!) however there are some things to note

    1. I have to agree with the other comments in your setup it does not matter - I'd keep the swap its useful and fast (higher IO Operations concurrently etc)
    2. Note that TRIM is only supported on ext4 and newer FS but not ext3 or ext2.
    3. Most Linux keep trim off by default on install you can enable it http://www.howtogeek.com/176978/ubun...e-it-yourself/
    4. The make and model of SSD is important as the enterprise units have larger amounts of redundant storage set asside to mask wear. Stick to Samsung and Kingston if you are not close to SSD trends (Tip follow Allyn Malventano on PCPER.COM he is very knowledgeable in the SSD space) example of his recent review https://www.pcper.com/reviews/Storag...mparisons-TRIM which covers trim performance as part of the review.
    5. In 5 years we will be on phase change SSD (Xpoint) which have a huge duty cycle Vs today's NAND/TLC



    http://arstechnica.com/gadgets/2015/...ed-trim-right/
    Last edited by frownbreaker; 31-10-2016 at 10:40 PM. Reason: Phase change

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