Thanks. 
 
Very helpful again.   
 
At first I thought that the  constraint might be the Pine's 2.0 USB controller but if the random write performance from pine sd card to usb stick went down while the random read performance from Pine sd card to USB stick went up it doesn't seem that the Pine's 2.0 USB controller is what is limiting usb random write performance..
	 
	
	
	
	
 
 
	
	
		Using an Intergral 64GB USB 3.0: 
    Run began: Fri Jul  1 21:01:52 2016 
  
    Include fsync in write timing 
    O_DIRECT feature enabled 
    Auto Mode 
    File size set to 102400 kB 
    Record Size 4 kB 
    Record Size 16 kB 
    Record Size 512 kB 
    Record Size 1024 kB 
    Record Size 16384 kB 
    Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
    Output is in kBytes/sec 
    Time Resolution = 0.000001 seconds. 
    Processor cache size set to 1024 kBytes. 
    Processor cache line size set to 32 bytes. 
    File stride size set to 17 * record size. 
                                                              random    random     bkwd    record    stride                                     
              kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread 
          102400       4     1816     1668     5914     4980     5395      929                                                           
          102400      16     5987     6767    18200    17952    17514     3320                                                           
          102400     512    16531    17967    32526    33244    32805    12625                                                           
          102400    1024    14803    19849    35492    36330    36312    14429                                                           
          102400   16384    13931    11563    37908    37925    37153    14658                                                           
  
iozone test complete.
	 
	
	
	
	
 
 
	
	
		Thanks JamesRead90. 
 
More data is always better! 
 
So for random writes it looks like your Intergral 64GB USB 3.0 is faster (14,658 kBytes/sec) than the Pine64 SD card (11,300 kBytes/sec).
	 
	
	
	
	
 
 
	
	
		Xalius, how do these results stack up against the Pine64 card and my Integral 64GB USB 3.0? For this test I used my Kingston Datatraveler Ultimate USB 3.0. 
Run began: Thu Jul  7 00:48:48 2016
 
Include fsync in write timing 
O_DIRECT feature enabled 
Auto Mode 
File size set to 102400 kB 
Record Size 4 kB 
Record Size 16 kB 
Record Size 512 kB 
Record Size 1024 kB 
Record Size 16384 kB 
Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
Output is in kBytes/sec 
Time Resolution = 0.000001 seconds. 
Processor cache size set to 1024 kBytes. 
Processor cache line size set to 32 bytes. 
File stride size set to 17 * record size.
 Code:                                                              random    random     bkwd    record    stride                                     
              kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread 
          102400       4     5965     6589    10653    10657     7472      349                                                           
          102400      16    12626    12643    21321    21292    21200     1274                                                           
          102400     512    16669    13970    38586    38322    38251      807                                                           
          102400    1024    12490    12473    39157    39186    39121     1589                                                           
          102400   16384    26150    29875    41209    41221    41218    19738
  
iozone test complete.
	  
	
	
	
	
 
 
	
	
		So for random writes and ranked in order of speed from fastest to slowest: 
1)	Samsung EVO 64 GB xalius 21,690 kB/sec 
2)	Integral 64GB USB 3.0 Jamesread90 (2nd test) 19,738 kBytes/sec (Kingston Data traveler Ultimate USB 3.0) 
3)	Sony USB 64 GB USB 3.0 xalius 12,157 kB/sec 
4)	Integral 64GB USB 3.0 Jamesread90 14,658 kB/sec 
5)	Pine64 SD card xalius (11,373 kBytes/sec). 
This ignores cost of each option. 
 
Jamesread 90 what is the difference between your results in #2 and #4?
	 
	
	
	
	
 
 
	
		
		
		07-24-2016, 11:28 AM 
(This post was last modified: 07-24-2016, 11:30 AM by xalius.)
		
	 
	
		Testing Linux pine64 4.7.0-rc1firebuild-MMC #1 SMP PREEMPT Sun Jul 24 11:56:29 CDT 2016 aarch64 GNU/Linux 
Code: debian@pine64:~$ iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
        Iozone: Performance Test of File I/O 
                Version $Revision: 3.429 $ 
                Compiled for 64 bit mode. 
                Build: linux 
 
        Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins 
                     Al Slater, Scott Rhine, Mike Wisner, Ken Goss 
                     Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, 
                     Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, 
                     Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, 
                     Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, 
                     Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, 
                     Vangel Bojaxhi, Ben England, Vikentsi Lapa. 
 
        Run began: Sun Jul 24 17:19:09 2016 
 
        Include fsync in write timing 
        O_DIRECT feature enabled 
        Auto Mode 
        File size set to 102400 kB 
        Record Size 4 kB 
        Record Size 16 kB 
        Record Size 512 kB 
        Record Size 1024 kB 
        Record Size 16384 kB 
        Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
        Output is in kBytes/sec 
        Time Resolution = 0.000001 seconds. 
        Processor cache size set to 1024 kBytes. 
        Processor cache line size set to 32 bytes. 
        File stride size set to 17 * record size. 
                                                              random    random     bkwd    record    stride 
              kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread 
          102400       4     1610     2793     5949     5955     5940     2852 
          102400      16     7435     7585     9155     9176     9175     7645 
          102400     512    11091    11199    11644    11624    11633    11122 
          102400    1024    11205    11258    11668    11651    11664    11264 
          102400   16384    11045    11297    11684    11681    11685    11304 
 
iozone test complete.
 
For comparison with the latest BSP 3.10.x kernel (102-2):
 Code: ubuntu@pine64:~$ iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
       Iozone: Performance Test of File I/O 
               Version $Revision: 3.429 $ 
               Compiled for 64 bit mode. 
               Build: linux 
 
       Run began: Sat Jun 18 11:29:59 2016 
 
       Include fsync in write timing 
       O_DIRECT feature enabled 
       Auto Mode 
       File size set to 102400 kB 
       Record Size 4 kB 
       Record Size 16 kB 
       Record Size 512 kB 
       Record Size 1024 kB 
       Record Size 16384 kB 
       Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
       Output is in kBytes/sec 
       Time Resolution = 0.000001 seconds. 
       Processor cache size set to 1024 kBytes. 
       Processor cache line size set to 32 bytes. 
       File stride size set to 17 * record size. 
                                                             random    random     bkwd    record    stride 
             kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread 
         102400       4     2319     3321     7347     7363     7357     3526 
         102400      16    10166    12550    14464    14432    14471    12570 
         102400     512    21591    21566    23143    23140    23139    21616 
         102400    1024    21653    21565    23097    23100    23098    21645 
         102400   16384    21678    21662    23084    23082    23082    21690 
 
iozone test complete
  
	 
	
	
	
	
 
 
	
		
		
		06-17-2017, 11:19 AM 
(This post was last modified: 06-17-2017, 11:24 AM by xalius.)
		
	 
	
		New data from Pinebook eMMC for comparison, running with performance governor on  Linux pinebook 3.10.105-bsp-1.2-ayufan-65 #1 SMP PREEMPT Mon Jun 5 06:57:47 UTC 2017 aarch64 aarch64 aarch64 GNU/Linux
Code:     Run began: Sat Jun 17 19:12:37 2017 
 
    Include fsync in write timing 
    O_DIRECT feature enabled 
    Auto Mode 
    File size set to 102400 kB 
    Record Size 4 kB 
    Record Size 16 kB 
    Record Size 512 kB 
    Record Size 1024 kB 
    Record Size 16384 kB 
    Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
    Output is in kBytes/sec 
    Time Resolution = 0.000001 seconds. 
    Processor cache size set to 1024 kBytes. 
    Processor cache line size set to 32 bytes. 
    File stride size set to 17 * record size. 
                                                              random    random                                     
              kB  reclen    write  rewrite    read    reread    read     write 
          102400       4     4078     4211    19836    19561    13048     3360                                                           
          102400      16    18230    18891    50913    51223    37699    14025                                                           
          102400     512    55205    54522    84858    84813    83709    49719                                                           
          102400    1024    55929    55135    84625    85749    85235    51696                                                           
          102400   16384    56507    56041    85515    85579    85930    55151                                                          
  
	 
	
	
	
	
 
 
	
		
		
		06-21-2017, 05:17 PM 
(This post was last modified: 06-22-2017, 05:28 AM by pfeerick.
 Edit Reason: added [code] formatting so things line up again ;)
)
		
	 
	
		Code: pine64@pinebook:~$ iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
Iozone: Performance Test of File I/O 
       Version $Revision: 3.429 $ 
Compiled for 64 bit mode. 
Build: linux  
 
Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins 
            Al Slater, Scott Rhine, Mike Wisner, Ken Goss 
            Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, 
            Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, 
            Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, 
            Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, 
            Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, 
            Vangel Bojaxhi, Ben England, Vikentsi Lapa. 
 
Run began: Wed Jun 21 23:09:02 2017 
 
Include fsync in write timing 
O_DIRECT feature enabled 
Auto Mode 
File size set to 102400 kB 
Record Size 4 kB 
Record Size 16 kB 
Record Size 512 kB 
Record Size 1024 kB 
Record Size 16384 kB 
Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
Output is in kBytes/sec 
Time Resolution = 0.000001 seconds. 
Processor cache size set to 1024 kBytes. 
Processor cache line size set to 32 bytes. 
File stride size set to 17 * record size. 
                                                              random    random     bkwd    record    stride                                     
              kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread 
          102400       4     3018     3096     8644     8631     8167     3715                                                           
          102400      16     8248     8363    16757    16863    16571     9702                                                           
          102400     512    21553    21338    23032    22853    22827    20587                                                           
          102400    1024    21358    21313    22921    23142    22855    21118                                                           
          102400   16384    21168    21375    22947    22915    23134    21070                                                           
 
iozone test complete.
  
Forgot to mention that this is one of the new Sandisk A1 32 gig card.
	  
	
	
	
	
 
 
	
		
		
		06-23-2017, 10:37 AM 
(This post was last modified: 06-23-2017, 10:39 AM by xalius.)
		
	 
	
		Sandisk Extreme Pro 32GB with A1 / V30 rating 
Code: pine64@pinebook:/media/pine64/6532-6630$ iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
    Iozone: Performance Test of File I/O 
            Version $Revision: 3.429 $ 
        Compiled for 64 bit mode. 
        Build: linux  
 
    Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins 
                 Al Slater, Scott Rhine, Mike Wisner, Ken Goss 
                 Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, 
                 Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, 
                 Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, 
                 Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root, 
                 Fabrice Bacchella, Zhenghua Xue, Qin Li, Darren Sawyer, 
                 Vangel Bojaxhi, Ben England, Vikentsi Lapa. 
 
    Run began: Fri Jun 23 18:28:17 2017 
 
    Include fsync in write timing 
    O_DIRECT feature enabled 
    Auto Mode 
    File size set to 102400 kB 
    Record Size 4 kB 
    Record Size 16 kB 
    Record Size 512 kB 
    Record Size 1024 kB 
    Record Size 16384 kB 
    Command line used: iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 
    Output is in kBytes/sec 
    Time Resolution = 0.000001 seconds. 
    Processor cache size set to 1024 kBytes. 
    Processor cache line size set to 32 bytes. 
    File stride size set to 17 * record size. 
                                                              random    random             
              kB  reclen    write  rewrite    read    reread    read     write   
          102400       4     3420     3442     7736     8133     7404     4750                                                           
          102400      16     7509     8154    15160    15040    14810    10800                                                           
          102400     512    17752    21726    22651    22747    22798    20674                                                           
          102400    1024    17836    21356    22843    22907    22877    20994                                                           
          102400  16384l    18359    22042    23038    23038    23093    21774
  
	 
	
	
	
	
 
 
	
	
		 (01-24-2016, 06:10 PM)mronhb Wrote:  please excuse the noob question but can anyone please recommend a good brand and class of micro sd card to buy to use with the PINE A64+ w/ 2GB SDRAM. I am very excited about receiving mine in March but very much wanting advice on the best micro sd card to buy. Any advice greatfully accepted thanks    
Hello 
The choice of sdcard is rather important, sd cards suffer from a symptom called 'Wear Level', this where cards that are constantly being written over and over again such as dashcams or video camera cards, suffer premature failure due to data blocks within the memory stack being corrupted and not accepting any more data. The blocks are tagged in the VTOC (Volume Table of Contents) and the 32gb sdcard is no longer 32gb, The Samsung line of SDcards (extreme usage) though a little more expensive seem to hold up the best when benchmarked, it is very important that the card is specified for high read/write (sometimes you may see a card specified for video for example) and the phrase the phrase Extreme Usage' should be displayed in the item description, this information is well known to the SD card manufacturers and is just now making its way into general parlance.
	  
	
	
	
	
 
 
	 
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