SAMSUNG EVO Plus 128GB microSDXC UHS-I U3

SAMSUNG EVO Plus 128GB microSDXC UHS-I U3

$ python3 read_sd_attr.py

===== SD and MMC Block Device Attributes Reader Ver 0.02 =====
device: /sys/block/mmcblk0/device
----------------------------------------
cid: 1b534d4544345154304a4957e60133f7\n
csd: 400e00325b590003b9ff7f800a4040ab\n
scr: 02c5800300000000\n
date: 03/2019\n
fwrev: 0x0\n
hwrev: 0x3\n
manfid: 0x00001b\n
name: ED4QT\n
oemid: 0x534d\n ('SM')
prv: None
serial: 0x4a4957e6\n
erase_size: 512\n
preferred_erase_size: 16777216\n
raw_rpmb_size_mult: None
rel_sectors: None
ocr: 0x00200000\n
dsr: 0x404\n
cmdq_en: None
----------------------------------------

$ sudo ./sdbench.sh
CONFIG:
CLOCK : 50.000 MHz
CORE  : 400 MHz, turbo=0
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads:  64 MB in  3.08 seconds =  20.81 MB/sec
 Timing O_DIRECT disk reads:  64 MB in  3.08 seconds =  20.77 MB/sec
 Timing O_DIRECT disk reads:  64 MB in  3.09 seconds =  20.72 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 66.1486 s, 8.1 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 62.2872 s, 8.6 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 63.4779 s, 8.5 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 23.2363 s, 23.1 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 23.2462 s, 23.1 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 23.2139 s, 23.1 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   400        0      50.000 MHz    8.01 MB/s   22.04 MB/s   20.76 MB/s

$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 50.000 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads:  68 MB in  3.06 seconds =  22.19 MB/sec
Running dd test...
51200+0 レコード入力
51200+0 レコード出力
419430400 bytes (419 MB, 400 MiB) copied, 48.921 s, 8.6 MB/s

Running iozone test...
        Iozone: Performance Test of File I/O
                Version $Revision: 3.492 $
                Compiled for 32 bit mode.
                Build: linux-arm

        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,
                     Alexey Skidanov, Sudhir Kumar.

        Run began: Thu Mar 10 12:10:45 2022

        Include fsync in write timing
        O_DIRECT feature enabled
        Auto Mode
        File size set to 102400 kB
        Record Size 4 kB
        Command line used: ./iozone -e -I -a -s 100M -r 4k -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     1637     1960     5036     5023     4085     1932


iozone test complete.

microSD card benchmark complete!

core_freq (MHz)	dtparam=sd_overclock (MHz)	actual clock	judge
515	103 (=515/5)	85.833	NG
480	96 (=480/5)	83.333	NG
475	95 (=475/5)	83.333	NG
470	94 (=470/5)	94.000	OK
466	93 (=466/5)	93.000	OK
450	90 (=450/5)	90.000	OK

/boot/config.txt

$ sudo nano /boot/config.txt
 
#----- Zero OC -----
##fake_vsync_isr=1
##framebuffer_swap=0
##gpu_mem=48
##init_emmc_clock=100000000
 
force_turbo=1
 
##arm_freq=1150
##arm_freq=1095 for my other unit with heatsink
##arm_freq=1085
arm_freq=1050
 
##gpu_freq=550 for the unit with a heatsink
##gpu_freq=530
gpu_freq=520
##gpu_freq=300
 
core_freq=470
#core_freq=515
over_voltage=2
 
sdram_freq=533
over_voltage_sdram=1
##over_voltage_sdram_c=7
##over_voltage_sdram_i=7
##over_voltage_sdram_p=8
 
dtparam=sd_overclock=94

$ sudo ./sdbench.sh

CONFIG: core_freq=470, dtparam=sd_overclock=94
CLOCK : SD Bus: 94.000 MHz, CPU: 1050.110 MHz, CPU Temp: 48.692 ℃, SDRAM: 533 MHz
VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
CORE  : 470 MHz(470 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 120 MB in  3.04 seconds =  39.50 MB/sec
 Timing O_DIRECT disk reads: 120 MB in  3.05 seconds =  39.40 MB/sec
 Timing O_DIRECT disk reads: 116 MB in  3.04 seconds =  38.17 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 41.2769 s, 13.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 51.7984 s, 10.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 45.155 s, 11.9 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 12.7111 s, 42.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 12.7076 s, 42.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 12.7066 s, 42.3 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   470        1      94.000 MHz   11.21 MB/s   40.29 MB/s   38.99 MB/s

microSD card benchmark complete!
CPU Temp: 48.692 ℃

$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 94.000 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 124 MB in  3.01 seconds =  41.14 MB/sec

Running dd test...

51200+0 レコード入力
51200+0 レコード出力
419430400 bytes (419 MB, 400 MiB) copied, 38.3377 s, 10.9 MB/s

Running iozone test...
        Iozone: Performance Test of File I/O
                Version $Revision: 3.492 $
                Compiled for 32 bit mode.
                Build: linux-arm

        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,
                     Alexey Skidanov, Sudhir Kumar.

        Run began: Tue Mar 15 09:32:08 2022

        Include fsync in write timing
        O_DIRECT feature enabled
        Auto Mode
        File size set to 102400 kB
        Record Size 4 kB
        Command line used: ./iozone -e -I -a -s 100M -r 4k -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     1818     2554     6025     6015     5066     2441


iozone test complete.

microSD card benchmark complete!

/boot/config.txt

$ sudo nano /boot/config.txt
 
#fake_vsync_isr=1
#framebuffer_swap=0
#gpu_mem=48
#init_emmc_clock=100000000
 
#arm_freq=1150
#arm_freq=1085
arm_freq=1050
#arm_freq=1095 for my other unit with heatsink
 
over_voltage=2
 
#gpu_freq=530
gpu_freq=520
#gpu_freq=300
#gpu_freq=550 for the unit with a heatsink
 
core_freq=466
 
sdram_freq=533
over_voltage_sdram=1
#over_voltage_sdram_c=7
#over_voltage_sdram_i=7
#over_voltage_sdram_p=8
 
dtparam=sd_overclock=93
force_turbo=1

$ sudo ./sdbench.sh

CONFIG: core_freq=466, dtparam=sd_overclock=93
CLOCK : SD Bus: 93.200 MHz, CPU: 1050.000 MHz, CPU Temp: 43.312 ℃, SDRAM: 533 MHz
VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
CORE  : 466 MHz(466 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 118 MB in  3.02 seconds =  39.10 MB/sec
 Timing O_DIRECT disk reads: 118 MB in  3.05 seconds =  38.68 MB/sec
 Timing O_DIRECT disk reads: 118 MB in  3.04 seconds =  38.87 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 46.5652 s, 11.5 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 46.1383 s, 11.6 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 49.0241 s, 11.0 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 12.7997 s, 41.9 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 12.8071 s, 41.9 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 12.8156 s, 41.9 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   466        1      93.200 MHz   10.85 MB/s   39.98 MB/s   38.86 MB/s

microSD card benchmark complete!
CPU Temp: 47.616 ℃

$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 93.200 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 122 MB in  3.01 seconds =  40.60 MB/sec

Running dd test...

51200+0 レコード入力
51200+0 レコード出力
419430400 bytes (419 MB, 400 MiB) copied, 35.7838 s, 11.7 MB/s

Running iozone test...
        Iozone: Performance Test of File I/O
                Version $Revision: 3.492 $
                Compiled for 32 bit mode.
                Build: linux-arm

        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,
                     Alexey Skidanov, Sudhir Kumar.

        Run began: Tue Mar 15 09:02:50 2022

        Include fsync in write timing
        O_DIRECT feature enabled
        Auto Mode
        File size set to 102400 kB
        Record Size 4 kB
        Command line used: ./iozone -e -I -a -s 100M -r 4k -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     1756     2436     5973     5968     5029     2228


iozone test complete.

microSD card benchmark complete!

/boot/config.txt

$ sudo nano /boot/config.txt
 
#fake_vsync_isr=1
#framebuffer_swap=0
#gpu_mem=48
#init_emmc_clock=100000000
 
#arm_freq=1150
#arm_freq=1085
#arm_freq=1050
#arm_freq=1095 for my other unit with heatsink
 
#over_voltage=2
 
#gpu_freq=530
#gpu_freq=520
#gpu_freq=300
#gpu_freq=550 for the unit with a heatsink
 
#core_freq=515
 
#sdram_freq=533
#over_voltage_sdram=1
#over_voltage_sdram_c=7
#over_voltage_sdram_i=7
#over_voltage_sdram_p=8
 
dtparam=sd_overclock=100
force_turbo=1

$ sudo ./sdbench.sh
CONFIG: dtparam=sd_overclock=100
CLOCK : 83.333 MHz
CORE  : 400 MHz, turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads:  98 MB in  3.02 seconds =  32.44 MB/sec
 Timing O_DIRECT disk reads:  98 MB in  3.02 seconds =  32.44 MB/sec
 Timing O_DIRECT disk reads:  98 MB in  3.03 seconds =  32.39 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 57.383 s, 9.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 51.8252 s, 10.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 48.9337 s, 11.0 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 14.8008 s, 36.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 14.7975 s, 36.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 14.7977 s, 36.3 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   400        1      83.333 MHz    9.75 MB/s   34.60 MB/s   32.41 MB/s

$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 83.333 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 106 MB in  3.03 seconds =  34.97 MB/sec

Running dd test...

51200+0 レコード入力
51200+0 レコード出力
419430400 bytes (419 MB, 400 MiB) copied, 39.2872 s, 10.7 MB/s

Running iozone test...
        Iozone: Performance Test of File I/O
                Version $Revision: 3.492 $
                Compiled for 32 bit mode.
                Build: linux-arm

        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,
                     Alexey Skidanov, Sudhir Kumar.

        Run began: Fri Mar 11 07:23:21 2022

        Include fsync in write timing
        O_DIRECT feature enabled
        Auto Mode
        File size set to 102400 kB
        Record Size 4 kB
        Command line used: ./iozone -e -I -a -s 100M -r 4k -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     1730     2259     5503     5491     4419     1967


iozone test complete.

microSD card benchmark complete!

/boot/config.txt

$ sudo nano /boot/config.txt
 
#fake_vsync_isr=1
#framebuffer_swap=0
#gpu_mem=48
#init_emmc_clock=100000000
 
#arm_freq=1150
#arm_freq=1085
arm_freq=1050
#arm_freq=1095 for my other unit with heatsink
 
over_voltage=2
 
#gpu_freq=530
gpu_freq=520
#gpu_freq=300
#gpu_freq=550 for the unit with a heatsink
 
core_freq=515
 
sdram_freq=533
over_voltage_sdram=1
#over_voltage_sdram_c=7
#over_voltage_sdram_i=7
#over_voltage_sdram_p=8
 
dtparam=sd_overclock=100
force_turbo=1

$ sudo ./sdbench.sh
CONFIG: dtparam=sd_overclock=100
CLOCK : 85.833 MHz
CORE  : 515 MHz, turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 104 MB in  3.00 seconds =  34.66 MB/sec
 Timing O_DIRECT disk reads: 104 MB in  3.00 seconds =  34.63 MB/sec
 Timing O_DIRECT disk reads: 104 MB in  3.01 seconds =  34.59 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 67.4483 s, 8.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 53.7587 s, 10.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 51.4308 s, 10.4 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 13.7502 s, 39.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 13.7579 s, 39.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 13.7725 s, 39.0 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   515        1      85.833 MHz    9.02 MB/s   37.21 MB/s   34.63 MB/s

$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 85.833 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads:   8 MB in  4.28 seconds =   1.87 MB/sec

Running dd test...

51200+0 レコード入力

51200+0 レコード出力
419430400 bytes (419 MB, 400 MiB) copied, 46.1464 s, 9.1 MB/s

Running iozone test...
        Iozone: Performance Test of File I/O
                Version $Revision: 3.492 $
                Compiled for 32 bit mode.
                Build: linux-arm

        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,
                     Alexey Skidanov, Sudhir Kumar.

        Run began: Fri Mar 11 10:50:48 2022

        Include fsync in write timing
        O_DIRECT feature enabled
        Auto Mode
        File size set to 102400 kB
        Record Size 4 kB
        Command line used: ./iozone -e -I -a -s 100M -r 4k -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     1797     2682     5382     5407     4638      880

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目次

SAMSUNG EVO Plus 128GB microSDXC UHS-I U3

read_sd_attr.py

オーバークロック前

sdbench.sh

microsd-benchmarks.sh

オーバークロック後

設定値割り出し

config.txt の設定 (core_freq=470, sd_overclock=94)

sdbench.sh

microsd-benchmarks.sh

config.txt の設定 (core_freq=466, sd_overclock=93)

sdbench.sh

microsd-benchmarks.sh

config.txt の設定 (force_turbo=1, sd_overclock=100)

sdbench.sh

microsd-benchmarks.sh

config.txt の設定 (core_freq=515, sd_overclock=100)

sdbench.sh

microsd-benchmarks.sh

ともやん・どっと・ねっと