hardware:raspberry_pi:sdcard_overclock:toshiba_exceria_32gb_microsdhc_class10_uhs-i_u3 [ともやん・どっと・ねっと]

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====== TOSHIBA EXCERIA 32GB microSDHC Class10 UHS-I U3 ======
{{:hardware:sdcard_bench_toshiba_exceria_32gb_uhs3_micro_sdhc_001.jpg?100|TOSHIBA EXCERIA 32GB microSDHC Class10 UHS-I U3}}\\

===== read_sd_attr.py =====
<WRAP mincode_long><code>
$ python3 read_sd_attr.py

===== SD and MMC Block Device Attributes Reader Ver 0.02 =====
device: /sys/block/mmcblk0/device
----------------------------------------
cid: 02544d554330443320e834cba100f2fb\n
csd: 400e00325b590000e8ff7f800a4000af\n
scr: 02b5840332022902\n
date: 02/2015\n
fwrev: 0x0\n
hwrev: 0x2\n
manfid: 0x000002\n
name: UC0D3\n
oemid: 0x544d\n ('TM')
prv: None
serial: 0xe834cba1\n
erase_size: 512\n
preferred_erase_size: 4194304\n
raw_rpmb_size_mult: None
rel_sectors: None
ocr: 0x00200000\n
dsr: 0x404\n
cmdq_en: None
----------------------------------------
</code></WRAP>

===== オーバークロック前 =====

==== sdbench.sh ====
<WRAP mincode_long><code>
$ sudo ./sdbench.sh

CONFIG: default
CLOCK : SD Bus: 50.000 MHz, CPU: 1000.002 MHz, CPU Temp: 36.856 ℃, SDRAM: 450 MHz
VOLTS : core: 1.3500V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V
CORE  : 400 MHz(400 MHz), turbo=0
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads:  66 MB in  3.01 seconds =  21.90 MB/sec
 Timing O_DIRECT disk reads:  66 MB in  3.02 seconds =  21.86 MB/sec
 Timing O_DIRECT disk reads:  66 MB in  3.02 seconds =  21.85 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 85.1029 s, 6.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 79.3622 s, 6.8 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 86.9324 s, 6.2 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 23.116 s, 23.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 23.108 s, 23.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 23.1199 s, 23.2 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   400        0      50.000 MHz    6.12 MB/s   22.15 MB/s   21.88 MB/s

microSD card benchmark complete!
CPU Temp: 42.774 ℃

</code></WRAP>

==== microsd-benchmarks.sh ====
<WRAP mincode_long><code>
$ 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 =  22.21 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, 43.6287 s, 9.6 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: Tue Mar 15 12:23:08 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      779      813     6018     5980     5872      309


iozone test complete.

microSD card benchmark complete!

</code></WRAP>

===== オーバークロック後 =====

==== 設定値割り出し ====
<WRAP mintbl>
^  core_freq (MHz)  ^  dtparam=sd_overclock (MHz)  ^  actual clock (MHz)  ^  judge  ^  benchmark  ^
|  560 |  133 (=560/4.210) |  125.000 (=560/4.480) |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
|  558(557.999) |  133 (=558/4.210) |  125.000 (=558/4.480) |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
|  557 |  133 (=557/4.210) |  125.000 (=557/4.480) |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
|  556 |  133 (=556/4.210) |  125.000 (=556/4.480) |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
|  555 |  133 (=555/4.172) |  125.000 (=555/4.440) |  <wrap em>NG</wrap>  |  **OK**  |
|  555 |  125 (=555/4.440) |  125.000 (=555/4.440) |  **OK**  |  **OK**  |
|  550 |  133 (=550/4.135) |  125.000 (=550/4.400) |  <wrap em>NG</wrap>  |  **OK**  |
|  550 |  110 (=550/5.000) |  110.000 (=550/5.000) |  **OK**  |  **OK**  |
|  532 |  133 (=532/4.000) |  125.000 (=532/4.256) |  <wrap em>NG</wrap>  |  **OK**  |
|  500 |  125 (=500/4.000) |  100.000 (=500/5.000) |  <wrap em>NG</wrap>  |  **OK**  |
|  480 |  120 (=480/4.000) |  96.000 (=480/5.000) |  <wrap em>NG</wrap>  |  **OK**  |
|  480 |  96 (=480/5.000) |  96.000 (=480/5.000) |  **OK**  |  **OK**  |
|  400 |  100 (=400/4.000) |  100.000 (=400/4.000) |  **OK**  |  **OK**  |
</WRAP>

==== config.txt の設定 (force_turbo=1,sd_overclock=100) ====
<WRAP mincode><code autoconf /boot/config.txt>
$ sudo nano /boot/config.txt

force_turbo=1
dtparam=sd_overclock=100

$ sudo reboot
</code></WRAP>

==== sdbench.sh ====
<WRAP mincode_long><code>
$ sudo ./sdbench.sh

CONFIG: dtparam=sd_overclock=100
CLOCK : SD Bus: 100.000 MHz, CPU: 1000.000 MHz, CPU Temp: 43.312 ℃, SDRAM: 450 MHz
VOLTS : core: 1.3500V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V
CORE  : 400 MHz(400 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 126 MB in  3.03 seconds =  41.65 MB/sec
 Timing O_DIRECT disk reads: 126 MB in  3.03 seconds =  41.65 MB/sec
 Timing O_DIRECT disk reads: 126 MB in  3.03 seconds =  41.59 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 79.4532 s, 6.8 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 69.8294 s, 7.7 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 75.2594 s, 7.1 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 11.8353 s, 45.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 11.8332 s, 45.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 11.8372 s, 45.4 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   400        1     100.000 MHz    6.86 MB/s   43.26 MB/s   41.58 MB/s

microSD card benchmark complete!
CPU Temp: 45.464 ℃

</code></WRAP>

==== microsd-benchmarks.sh ====
<WRAP mincode_long><code>
$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 100.000 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 132 MB in  3.04 seconds =  43.47 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, 42.5475 s, 9.9 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 12:47:09 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      809      870     6998     6998     6761      189


iozone test complete.

microSD card benchmark complete!

</code></WRAP>

==== config.txt の設定 (force_turbo=1,core_freq=555,sd_overclock=125) ====
<WRAP mincode><code autoconf /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=1100
##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=560
core_freq=555
#core_freq=532
#core_freq=500
#core_freq=440
over_voltage=3

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=125
</code></WRAP>

==== sdbench.sh ====
<WRAP mincode_long><code>
$ sudo ./sdbench.sh

CONFIG: core_freq=555,dtparam=sd_overclock=125
CLOCK : SD Bus: 125.000 MHz, CPU: 1050.108 MHz, CPU Temp: 34.704 ℃, SDRAM: 533 MHz
VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
CORE  : 555 MHz(555 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 142 MB in  3.04 seconds =  46.68 MB/sec
 Timing O_DIRECT disk reads: 140 MB in  3.01 seconds =  46.56 MB/sec
 Timing O_DIRECT disk reads: 138 MB in  3.02 seconds =  45.63 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 75.0018 s, 7.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 74.7103 s, 7.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 73.3767 s, 7.3 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 10.9022 s, 49.2 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 10.6658 s, 50.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 10.6644 s, 50.3 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   555        1     125.000 MHz    6.89 MB/s   47.66 MB/s   46.31 MB/s

microSD card benchmark complete!
CPU Temp: 46.540 ℃

</code></WRAP>

==== microsd-benchmarks.sh ====
<WRAP mincode_long><code>
$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 125.000 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 146 MB in  3.03 seconds =  48.26 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, 39.592 s, 10.6 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: Wed Mar 16 01:46:40 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      827      877     7940     7948     7729      307


iozone test complete.

microSD card benchmark complete!

</code></WRAP>

==== config.txt の設定 (force_turbo=1,core_freq=550,sd_overclock=133) ====
<WRAP mincode><code autoconf /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=550
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=133
</code></WRAP>

==== sdbench.sh ====
<WRAP mincode_long><code>
$ sudo ./sdbench.sh

CONFIG: core_freq=550,dtparam=sd_overclock=133
CLOCK : SD Bus: 125.000 MHz, CPU: 1050.108 MHz, CPU Temp: 46.540 ℃, SDRAM: 533 MHz
VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
CORE  : 550 MHz(550 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 138 MB in  3.05 seconds =  45.32 MB/sec
 Timing O_DIRECT disk reads: 136 MB in  3.00 seconds =  45.29 MB/sec
 Timing O_DIRECT disk reads: 138 MB in  3.01 seconds =  45.79 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 77.1025 s, 7.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 73.325 s, 7.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 76.304 s, 7.0 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 10.7562 s, 49.9 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 10.7478 s, 50.0 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 10.7498 s, 49.9 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   550        1     125.000 MHz    6.78 MB/s   47.62 MB/s   45.48 MB/s

microSD card benchmark complete!
CPU Temp: 50.844 ℃

</code></WRAP>

==== microsd-benchmarks.sh ====
<WRAP mincode_long><code>
$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 125.000 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 144 MB in  3.01 seconds =  47.86 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, 35.8538 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 16:07:42 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      796      863     7891     7881     6827      188


iozone test complete.

microSD card benchmark complete!

</code></WRAP>

==== config.txt の設定 (force_turbo=1,core_freq=550,sd_overclock=110) ====
<WRAP mincode><code autoconf /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=550
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=110
</code></WRAP>

==== sdbench.sh ====
<WRAP mincode_long><code>
$ sudo ./sdbench.sh

CONFIG: core_freq=550,dtparam=sd_overclock=110
CLOCK : SD Bus: 110.000 MHz, CPU: 1050.108 MHz, CPU Temp: 36.856 ℃, SDRAM: 533 MHz
VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
CORE  : 550 MHz(550 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 140 MB in  3.04 seconds =  46.04 MB/sec
 Timing O_DIRECT disk reads: 138 MB in  3.01 seconds =  45.88 MB/sec
 Timing O_DIRECT disk reads: 138 MB in  3.01 seconds =  45.85 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 72.9741 s, 7.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 78.228 s, 6.9 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 81.2838 s, 6.6 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 10.7835 s, 49.8 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 10.7872 s, 49.8 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 10.7841 s, 49.8 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   550        1     110.000 MHz    6.62 MB/s   47.47 MB/s   45.92 MB/s

microSD card benchmark complete!
CPU Temp: 47.616 ℃
</code></WRAP>

==== microsd-benchmarks.sh ====
<WRAP mincode_long><code>
$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 110.000 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 144 MB in  3.01 seconds =  47.85 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, 42.182 s, 9.9 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 13:15:05 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      826      868     7878     7883     7628      314


iozone test complete.

microSD card benchmark complete!

</code></WRAP>

==== config.txt の設定 (force_turbo=1,core_freq=532,sd_overclock=133) ====
<WRAP mincode><code autoconf /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=532
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=133
</code></WRAP>

==== sdbench.sh ====
<WRAP mincode_long><code>
$ sudo ./sdbench.sh

CONFIG: core_freq=532,dtparam=sd_overclock=133
CLOCK : SD Bus: 125.000 MHz, CPU: 1050.110 MHz, CPU Temp: 47.616 ℃, SDRAM: 533 MHz
VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
CORE  : 532 MHz(532 MHz), turbo=1
DATA  : 512 MB, /root/test.dat

HDPARM:
======
 Timing O_DIRECT disk reads: 134 MB in  3.01 seconds =  44.55 MB/sec
 Timing O_DIRECT disk reads: 134 MB in  3.00 seconds =  44.61 MB/sec
 Timing O_DIRECT disk reads: 134 MB in  3.01 seconds =  44.51 MB/sec

WRITE:
=====
536870912 bytes (537 MB, 512 MiB) copied, 75.599 s, 7.1 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 73.9234 s, 7.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 75.2662 s, 7.1 MB/s

READ:
====
536870912 bytes (537 MB, 512 MiB) copied, 11.1092 s, 48.3 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 11.1037 s, 48.4 MB/s
536870912 bytes (537 MB, 512 MiB) copied, 11.0987 s, 48.4 MB/s

RESULT (AVG):
============
core_freq   turbo     sd clock       WRITE        READ        HDPARM
   532        1     125.000 MHz    6.83 MB/s   46.11 MB/s   44.57 MB/s

microSD card benchmark complete!
CPU Temp: 49.768 ℃

</code></WRAP>

==== microsd-benchmarks.sh ====
<WRAP mincode_long><code>
$ sudo ./microsd-benchmarks.sh

Raspberry Pi Dramble microSD benchmarks
microSD clock: 125.000 MHz

Running hdparm test...

/dev/mmcblk0:
 Timing buffered disk reads: 140 MB in  3.02 seconds =  46.37 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, 41.1053 s, 10.2 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 15:43:02 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      792      855     7791     7793     6761      184


iozone test complete.

microSD card benchmark complete!

</code></WRAP>