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  • SSD seems slow

    Hi,

    just bought a Kingston SSD 120GB. Installed Ubuntu 14.04 on it, but i think the drive is slow. Booting takes about 30-40 seconds and after the desktop appears i cant start anything for about 20 seconds. Also in games like Witcher 2, i have the feeling that the textures wont load fast enough.

    My Specs:
    Code:
    Ubuntu 14.04 64Bit
    AMD Athlon 64 X2 Dual Core 6400+
    Asus M2N32-SLI Deluxe/Wireless Edition
    6 GIG Ram DDR2 
    Geforce GTX 750 
    Kingston SSD 120GB
    I know my board doesnt support AHCI Mode, but is this really such a huge difference? When i test the drive i get these results:

    Code:
    sudo hdparm -tT /dev/sda
    
    /dev/sda:
     Timing cached reads:   2784 MB in  2.00 seconds = 1393.34 MB/sec
     Timing buffered disk reads:  64 MB in  3.05 seconds =  20.97 MB/sec

  • #2
    Those results are really, really shitty. My five years old laptop HDD beats it.

    Timing cached reads: 6830 MB in 2.00 seconds = 3416.28 MB/sec
    Timing buffered disk reads: 182 MB in 3.00 seconds = 60.58 MB/sec

    Not using AHCI either, native driver.

    Comment


    • #3
      Okey, so i know for sure its way too slow. Now to find how to fix this :/

      Comment


      • #4
        Return it and buy a HDD

        Comment


        • #5
          Switched back to my HDD and with it i get these results:

          Code:
          /dev/sda:
           Timing cached reads:   2604 MB in  2.00 seconds = 1303.68 MB/sec
           Timing buffered disk reads: 228 MB in  3.02 seconds =  75.41 MB/sec
          Not much of a difference to me

          Comment


          • #6
            Something seriously wrong there.

            here's mine (OCZ Vertex 4)

            Code:
            [root@com1 ~]# hdparm -tT /dev/sda
            
            /dev/sda:
             Timing cached reads:   38032 MB in  2.00 seconds = 19037.15 MB/sec
             Timing buffered disk reads: 1164 MB in  3.00 seconds = 387.43 MB/sec
            [root@com1 ~]#

            Comment


            • #7
              Your probably limited by other hardware like cpu oe motherboard (bottleneck).
              if your board does not support ACHI it must be really old so im asumming you're...
              My 7 year old motherboard has it :P

              Also make sure you dont use EXT4 on a SSD try BTRFS or something newer that supports SSD's.

              Comment


              • #8
                hdparm does not test filesystems and i see no reason why ext4 would be bad. The SATA controler is just fully outdated, you could try to get a pci-e controller instead or just replace the board.

                Comment


                • #9
                  Originally posted by pete910 View Post
                  387.43 MB/sec
                  That's very close to max throughput of a 3Gbps controller. Are you sure your SSD isn't attached to a 3Gbps SATA port? On a 6Gbps port you should see a higher result - something close to 500MB/sec.

                  Comment


                  • #10
                    As for the OP's case - Kingston SSDs are frustratingly slow but 20MB/s isn't right even for them. First thing to do: check that BIOS and SSD firmware are up to date.

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