Announcement

Collapse
No announcement yet.

Announcement

Collapse
No announcement yet.

Linux SD Speed.

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Linux SD Speed.

    Good day friendly tweakers,
    Lately I am also tweaking my tv box (minix x7, RK3188) to run linux. For this im running Xubuntu from Linuxiums Dual-Boot, cooked with Win32 Disk Imager.
    Now a problem that arises is that is incredibly slow! Lets say I want to open FireFox webbrowser, this could take between 10 and 40 seconds to launch, which for me is unacceptable.
    Now I was thinking that my SD card class 4 is just too slow.

    What is your experience with running Linux on an SD card? (If you happen to run Linux on NAND, I am just as interested in your experience )

    Greetings,
    Anger.
    Tags: None
    #2
    Originally posted by Angeren View Post
    SD card class 4 is just too slow
    It not only depends on the class, but class 4 is very slow, it also depends on the size too and not only at sequential read/write (witch defined by class), it also depends on random read/write (also 4KB)...

    An example for a very slow 8GB SD:
    Code:
    -----------------------------------------------------------------------
CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
 
           Sequential Read :    13.467 MB/s
          Sequential Write :     4.663 MB/s
         Random Read 512KB :    13.183 MB/s
        Random Write 512KB :     0.600 MB/s
    Random Read 4KB (QD=1) :     1.983 MB/s [   484.2 IOPS]
   Random Write 4KB (QD=1) :     0.006 MB/s [     1.5 IOPS]
   Random Read 4KB (QD=32) :     2.135 MB/s [   521.2 IOPS]
  Random Write 4KB (QD=32) :     0.014 MB/s [     3.3 IOPS]
 
  Test : 50 MB [J: 0.0% (0.0/7445.4 MB)] (x2)
  Date : 2014/02/28 16:51:43
    OS : Windows XP Professional SP3 [5.1 Build 2600] (x86)
 
8 GB Class 4 FAT32
    An example for a very smooth 32GB SD:
    Code:
    -----------------------------------------------------------------------
CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
 
           Sequential Read :    13.540 MB/s
          Sequential Write :    10.660 MB/s
         Random Read 512KB :    13.229 MB/s
        Random Write 512KB :     8.833 MB/s
    Random Read 4KB (QD=1) :     2.443 MB/s [   596.4 IOPS]
   Random Write 4KB (QD=1) :     1.143 MB/s [   279.0 IOPS]
   Random Read 4KB (QD=32) :     2.854 MB/s [   696.8 IOPS]
  Random Write 4KB (QD=32) :     1.458 MB/s [   355.8 IOPS]
 
  Test : 50 MB [J: 0.0% (0.0/29.5 GB)] (x2)
  Date : 2014/02/28 16:13:08
    OS : Windows XP Professional SP3 [5.1 Build 2600] (x86)
 
32 GB Class 10 FAT32
    (this is the result at an internal reader, with an usb-reader i got Sequential/Random Read = ~20 MB/s)

    Both tested with linuxium ubuntu rfs at rk3188
    RK3288 Devices
    - Overview BOX (LINK !)
    - Overview STICK (Dongle) (LINK !)

    MINIX NEO: Z64 W/A - (Intel Z3735F); X8-H Plus - (Amlogic S812H); A2 Lite (sponsored by minix.com.hk)
    UGOOS UT3S (4/32GB with fan) - FW 2.0.6 - (RK3288) (sponsored by GearBest.com)
    Tronsmart Draco AW80 Meta (2/16GB) - FW v2.0rc3 - (Allwinner A80) (sponsored by GeekBuying.com)
    Beelink / UBOX R89 - FW 111k4110_1219 - (RK3288) (sponsored by Netxeon (Beelink))

    RK3188: pcb => "CH001 1332 TN-BX09_V2.1" (K-R42 / CS918...) => wasser KK 1.0.3 (old rev)
    Fly Mouse Mini Wireless Keyboard with 2 mode learning IR remote 'iPazzPort KP-810-16'

    Comment

      #3
      Thanks, that clears things up.
      About time I read some reviews for some SD cards and buy one.

      If ppl are interested:
      I have tested the Xubuntu build on my Nand and it is significantly faster. This is for me a temporary solution as I would prefer my OS to be on my SD card.

      Greetings,
      Angeren

      Comment

        #4
        Actually I'm waiting on an ordered UHS-I card... only to check it out... the shown c10 is fast enough... but perhaps...
        RK3288 Devices
        - Overview BOX (LINK !)
        - Overview STICK (Dongle) (LINK !)

        MINIX NEO: Z64 W/A - (Intel Z3735F); X8-H Plus - (Amlogic S812H); A2 Lite (sponsored by minix.com.hk)
        UGOOS UT3S (4/32GB with fan) - FW 2.0.6 - (RK3288) (sponsored by GearBest.com)
        Tronsmart Draco AW80 Meta (2/16GB) - FW v2.0rc3 - (Allwinner A80) (sponsored by GeekBuying.com)
        Beelink / UBOX R89 - FW 111k4110_1219 - (RK3288) (sponsored by Netxeon (Beelink))

        RK3188: pcb => "CH001 1332 TN-BX09_V2.1" (K-R42 / CS918...) => wasser KK 1.0.3 (old rev)
        Fly Mouse Mini Wireless Keyboard with 2 mode learning IR remote 'iPazzPort KP-810-16'

        Comment

          #5
          Originally posted by Angeren View Post
          Thanks, that clears things up.
          About time I read some reviews for some SD cards and buy one.

          If ppl are interested:
          I have tested the Xubuntu build on my Nand and it is significantly faster. This is for me a temporary solution as I would prefer my OS to be on my SD card.

          Greetings,
          Angeren
          I did some work on this before - see https://plus.google.com/109451178006...ts/Svgvwhj8MJm

          I'd recommend a SanDisk Extreme Pro® microSDHC™ UHS-I card.

          Comment

            #6
            "Faster than nand"

            SanDisk Ultra vs SanDisk extreme pro 8 gb performance test
            but I think, tested "only" at USB2.0, because of the reads limits at ~19....
            RK3288 Devices
            - Overview BOX (LINK !)
            - Overview STICK (Dongle) (LINK !)

            MINIX NEO: Z64 W/A - (Intel Z3735F); X8-H Plus - (Amlogic S812H); A2 Lite (sponsored by minix.com.hk)
            UGOOS UT3S (4/32GB with fan) - FW 2.0.6 - (RK3288) (sponsored by GearBest.com)
            Tronsmart Draco AW80 Meta (2/16GB) - FW v2.0rc3 - (Allwinner A80) (sponsored by GeekBuying.com)
            Beelink / UBOX R89 - FW 111k4110_1219 - (RK3288) (sponsored by Netxeon (Beelink))

            RK3188: pcb => "CH001 1332 TN-BX09_V2.1" (K-R42 / CS918...) => wasser KK 1.0.3 (old rev)
            Fly Mouse Mini Wireless Keyboard with 2 mode learning IR remote 'iPazzPort KP-810-16'

            Comment

              #7
              BTW:
              At my K-R42 the reader is only sepc 1.01 = max 12.5 MByte/s

              397-2 : iozone3 : armhf : Precise (12.04) : Ubuntu
              https://launchpad.net/ubuntu/precise/armhf/iozone3/397-2
              Iozone is useful for determining a broad benchmark of filesystem performance. The benchmark tests file I/O performance for the following operations: Read, write, re-read, re-write, read backwards, read strided, fread, fwrite, random read/write, pread/pwrite variants.


              Code:
              sudo dpkg --install iozone3_397-2_armhf.deb

ls -al /dev/mmc*
sudo cfdisk /dev/mmcblk0
sudo mkfs.ext4 /dev/mmcblk0p1
sudo mount -t ext4 /dev/mmcblk0p1 ~/SD_part
sudo iozone -e -I -a -s 50M -r 4k -r 512k -r 16M -i 0 -i 1 -i 2 -f ~/SD_part/iozone.dat
sudo umount ~/SD_part
              Code:
              32 GB Flashraptor Class 10
--------------------------
                                                 random  random
   KB  reclen   write rewrite    read    reread    read   write
51200       4    1397    1524     4370     4366    3946     370
51200     512    7949    7790    11910    11967   11941    1454
51200   16384    8138    8794    12156    12420   12044   10138


32 GB Class 10 (no name)
--------------
                                                 random  random
   KB  reclen   write rewrite    read    reread    read   write
51200       4    1461    1293     3913     3920    3629    1095
51200     512    9216   10031    12001    12026   12000    8268
51200   16384   10835   10655    12080    12016   12008   10836


8 GB ADATA Premier micro UHS-I
------------------------------
                                                 random  random
   KB  reclen   write rewrite    read    reread    read   write
51200       4    1149    1072     3405     3586    3794     910
51200     512    7845    8809    11951    11879   11933    7329
51200   16384    9347    9695    12520    12513   12521   10034
              RK3288 Devices
              - Overview BOX (LINK !)
              - Overview STICK (Dongle) (LINK !)

              MINIX NEO: Z64 W/A - (Intel Z3735F); X8-H Plus - (Amlogic S812H); A2 Lite (sponsored by minix.com.hk)
              UGOOS UT3S (4/32GB with fan) - FW 2.0.6 - (RK3288) (sponsored by GearBest.com)
              Tronsmart Draco AW80 Meta (2/16GB) - FW v2.0rc3 - (Allwinner A80) (sponsored by GeekBuying.com)
              Beelink / UBOX R89 - FW 111k4110_1219 - (RK3288) (sponsored by Netxeon (Beelink))

              RK3188: pcb => "CH001 1332 TN-BX09_V2.1" (K-R42 / CS918...) => wasser KK 1.0.3 (old rev)
              Fly Mouse Mini Wireless Keyboard with 2 mode learning IR remote 'iPazzPort KP-810-16'

              Comment

              Previous template Next

              What's Going On

              Collapse

              There are currently 4425 users online. 5 members and 4420 guests.

              Most users ever online was 16,134 at 08:28 on 08-11-2023.

              Working...
              X

              We process personal data about users of our site, through the use of cookies and other technologies, to deliver our services, personalize advertising, and to analyze site activity. We may share certain information about our users with our advertising and analytics partners. For additional details, refer to our Privacy Policy.

              By clicking "I AGREE" below, you agree to our Privacy Policy and our personal data processing and cookie practices as described therein. You also acknowledge that this forum may be hosted outside your country and you consent to the collection, storage, and processing of your data in the country where this forum is hosted.

              I Agree