News Researchers boost SSD read speeds

Discussion in 'Article Discussion' started by Gareth Halfacree, 30 Sep 2014.

  1. Gareth Halfacree

    Gareth Halfacree WIIGII! Lover of bit-tech Administrator Super Moderator Moderator

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  2. David

    David μoʍ ɼouმ qᴉq λon ƨbԍuq ϝʁλᴉuმ ϝo ʁԍɑq ϝμᴉƨ

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    I wonder how much is "considerably" - 2:6 suggests tripling the read performance. The SATA3 bus will saturate at 750MB/s, won't it?

    SSDs are already hitting 550MB/s.
     
  3. mclean007

    mclean007 Officious Bystander

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    Isn't 2:6 the same as 1:3? And it's odd to show the ratio that way - surely the improvement is 3:1, rather than 1:3?
     
  4. David

    David μoʍ ɼouმ qᴉq λon ƨbԍuq ϝʁλᴉuმ ϝo ʁԍɑq ϝμᴉƨ

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    An improvement of a third would take modern drive almost to the limit of SATA3.
     
  5. schmidtbag

    schmidtbag What's a Dremel?

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    750MB/s is theoretical maximum speed, but probably a speed that can never be achieved, realistically. Also, 550MB/s for read speeds on current SSDs is under the most optimal conditions possible. From what I noticed, the average SSD in most real-world environments runs at around 60% it's advertised speed.

    So, I guess when they say "considerably", it probably means that on average, your SSD runs closer to its advertised speed and probably won't ever exceed it. Think about it like this - if a SSD can reach 550MB/s, the following conditions probably apply:
    * You're writing a big block of consistent data (like all 0s)
    * The disk is brand new and completely formatted
    * There are no errors during the error check
    * The SATA controller is not a bottleneck
    * The filesystem itself is not a bottleneck

    So considering the average person:
    * Has more exciting data than just zeroes
    * Doesn't consistently format their disks
    * WILL have errors during read/write
    * Likely doesn't have the world's best SATA controller
    * Is probably using NTFS
    performance never reaches it's maximum. But if this research group can knock out the error check problem, that's a great start.
     
  6. Star*Dagger

    Star*Dagger What's a Dremel?

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    If you are not running your OS on an SSD you do not know what you are doing.
     
  7. schmidtbag

    schmidtbag What's a Dremel?

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    Not sure if you're referring to me, but in case you are:
    My desktop has 2 SSDs (one for linux, one for windows) and my laptop has a SSD. TRIM is enabled, firmware is fully updated, no paging/swap, no indexing, no prefetching, no hibernation, no defrag, all 3 drives on SATAIII, first block starts on n^2 byte, formatted in either NTFS or ext4, etc. My drives are about as optimized as you can get.
     
  8. Star*Dagger

    Star*Dagger What's a Dremel?

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    That was not directed at you in any way, a general statement to PC Gamers.
     
  9. schmidtbag

    schmidtbag What's a Dremel?

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    Ah ok. Well, I partially posted what I said to inform others how to get an optimal SSD setup. I may have forgot a few things here and there. Windows in general is a real PITA when it comes to SSDs. In linux you basically just edit /etc/fstab, add the word "discard" to the options of the SSD's device listing, reboot, and you're all done.
     
  10. littlepuppi

    littlepuppi Currently playing MWO and loving it

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    If their fractions are anything to go by they need to work on those before they start letting rip on ssd wear levelling..
     

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