目次
KLEVV 128GB microSDXC Class10 UHS-I U3 A1
read_sd_attr.py
$ python3 read_sd_attr.py ===== SD and MMC Block Device Attributes Reader Ver 0.02 ===== device: /sys/block/mmcblk0/device ---------------------------------------- cid: 00000053442020201014a0001a0143dd\n csd: 400e0032db790003a3d77f800a400067\n scr: 0245848700000000\n date: 03/2020\n fwrev: 0x0\n hwrev: 0x1\n manfid: 0x000000\n name: SD \n oemid: 0x0000\n ('') prv: None serial: 0x14a0001a\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 ----------------------------------------
オーバークロック前
sdbench.sh
$ 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: 66 MB in 3.01 seconds = 21.89 MB/sec Timing O_DIRECT disk reads: 66 MB in 3.02 seconds = 21.87 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, 37.3221 s, 14.4 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 33.8646 s, 15.9 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 34.9792 s, 15.3 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 23.5584 s, 22.8 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 23.8614 s, 22.5 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 23.2457 s, 23.1 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 400 0 50.000 MHz 14.49 MB/s 21.74 MB/s 21.88 MB/s
microsd-benchmarks.sh
$ 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, 26.495 s, 15.8 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: Sun Mar 13 10:33:55 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 1385 1648 5437 5437 4621 1615
iozone test complete.
microSD card benchmark complete!
オーバークロック後
設定値割り出し
core_freq (MHz) | dtparam=sd_overclock (MHz) | actual clock (MHz) | judge | benchmark |
---|---|---|---|---|
570 | 125 (=570/4.560) | 71.250 (=570/8.000) | NG | - |
565 | 125 (=565/4.520) | 125.000 (=565/4.520) | OK | OK |
560 | 125 (=560/4.480) | 125.000 (=560/4.480) | OK | OK |
560 | 110 (=560/5.090) | 93.333 (=560/6.000) | NG | OK 100 → 93.333 |
555 | 125 (=555/4.440) | 125.000 (=555/4.440) | OK | OK |
550 | 110 (=550/5.000) | 110.000 (=550/5.000) | OK | OK |
500 | 100 (=500/5.000) | 83.333 (=500/6.000) | NG | OK 100 → 83.333 |
460 | 115 (=460/4.000) | 115.000 (=460/4.000) | OK | NG checksum error |
config.txt の設定 (force_turbo=1,sd_overclock=100)
- /boot/config.txt
$ sudo nano /boot/config.txt force_turbo=1 dtparam=sd_overclock=100 $ sudo reboot
sdbench.sh
$ sudo ./sdbench.sh CONFIG: dtparam=sd_overclock=100 CLOCK : 100.000 MHz CORE : 400 MHz, turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 124 MB in 3.04 seconds = 40.75 MB/sec Timing O_DIRECT disk reads: 124 MB in 3.04 seconds = 40.75 MB/sec Timing O_DIRECT disk reads: 122 MB in 3.01 seconds = 40.60 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 27.7687 s, 19.3 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.8186 s, 20.0 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 28.2073 s, 19.0 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 12.3104 s, 43.6 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 12.2908 s, 43.7 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 12.2976 s, 43.7 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 400 1 100.000 MHz 18.56 MB/s 41.63 MB/s 40.70 MB/s
microsd-benchmarks.sh
$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 100.000 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads: 128 MB in 3.01 seconds = 42.53 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, 21.1011 s, 19.9 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: Sun Mar 13 14:33:06 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 1513 1748 6260 6258 5228 1733
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=565,sd_overclock=125)
- /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=565 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
sdbench.sh
$ sudo ./sdbench.sh CONFIG: core_freq=565,dtparam=sd_overclock=125 CLOCK : SD Bus: 125.000 MHz, CPU: 1050.110 MHz, CPU Temp: 47.078 ℃, SDRAM: 533 MHz VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V CORE : 565 MHz(565 MHz), turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 138 MB in 3.04 seconds = 45.45 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 = 45.79 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 26.2772 s, 20.4 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.0346 s, 20.6 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 24.9115 s, 21.6 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 11.2661 s, 47.7 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 10.9421 s, 49.1 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 10.9409 s, 49.1 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 565 1 125.000 MHz 19.90 MB/s 46.35 MB/s 45.70 MB/s microSD card benchmark complete! CPU Temp: 49.230 ℃
microsd-benchmarks.sh
$ 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 3.02 seconds = 47.74 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, 17.392 s, 24.1 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: Mon Mar 28 15:39:21 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 1588 1826 7038 7044 5771 1812
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=560,sd_overclock=125)
- /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=560 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
sdbench.sh
$ sudo cat /sys/kernel/debug/mmc0/ios clock: 50000000 Hz actual clock: 125000000 Hz vdd: 21 (3.3 ~ 3.4 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) signal voltage: 0 (3.30 V) driver type: 0 (driver type B) dietpi@DietPi-001:~$ sudo ./sdbench.sh CONFIG: core_freq=560,dtparam=sd_overclock=125 CLOCK : SD Bus: 125.000 MHz, CPU: 1050.110 MHz, CPU Temp: 44.926 ℃, SDRAM: 533 MHz VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V CORE : 560 MHz(560 MHz), turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 136 MB in 3.01 seconds = 45.15 MB/sec Timing O_DIRECT disk reads: 136 MB in 3.04 seconds = 44.79 MB/sec Timing O_DIRECT disk reads: 138 MB in 3.04 seconds = 45.33 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 26.8051 s, 20.0 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.2165 s, 20.5 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.0721 s, 20.6 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 11.7183 s, 45.8 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.6128 s, 46.2 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.4111 s, 47.0 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 560 1 125.000 MHz 19.42 MB/s 44.22 MB/s 45.10 MB/s microSD card benchmark complete! CPU Temp: 50.844 ℃
microsd-benchmarks.sh
$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 125.000 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads: 136 MB in 3.01 seconds = 45.25 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, 20.0062 s, 21.0 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: Mon Mar 28 15:30:49 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 1587 1850 7048 7047 5707 1811
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=555,sd_overclock=125)
- /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=555 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
sdbench.sh
$ sudo cat /sys/kernel/debug/mmc0/ios clock: 50000000 Hz actual clock: 125000000 Hz vdd: 21 (3.3 ~ 3.4 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) signal voltage: 0 (3.30 V) driver type: 0 (driver type B) dietpi@DietPi-001:~$ sudo ./sdbench.sh CONFIG: core_freq=555,dtparam=sd_overclock=125 CLOCK : SD Bus: 125.000 MHz, CPU: 1050.108 MHz, CPU Temp: 45.464 ℃, SDRAM: 533 MHz VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V CORE : 555 MHz(555 MHz), turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 136 MB in 3.04 seconds = 44.78 MB/sec Timing O_DIRECT disk reads: 134 MB in 3.02 seconds = 44.30 MB/sec Timing O_DIRECT disk reads: 136 MB in 3.03 seconds = 44.83 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 25.2886 s, 21.2 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.5107 s, 20.3 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 25.691 s, 20.9 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 11.5966 s, 46.3 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.5264 s, 46.6 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.3924 s, 47.1 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 555 1 125.000 MHz 19.83 MB/s 44.50 MB/s 44.66 MB/s microSD card benchmark complete! CPU Temp: 51.920 ℃
microsd-benchmarks.sh
$ 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 = 46.35 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, 18.9856 s, 22.1 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: Mon Mar 28 15:09:10 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 1587 1830 7083 7090 5672 1845
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=550,sd_overclock=110)
- /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=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=110
sdbench.sh
$ sudo ./sdbench.sh CONFIG: core_freq=550,dtparam=sd_overclock=110 CLOCK : SD Bus: 110.000 MHz, CPU: 1050.108 MHz, CPU Temp: 47.078 ℃, SDRAM: 533 MHz VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V CORE : 550 MHz(550 MHz), turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 136 MB in 3.02 seconds = 45.04 MB/sec Timing O_DIRECT disk reads: 136 MB in 3.02 seconds = 45.04 MB/sec Timing O_DIRECT disk reads: 136 MB in 3.02 seconds = 44.99 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 26.3988 s, 20.3 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 25.0628 s, 21.4 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.3085 s, 20.4 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 11.4274 s, 47.0 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.4761 s, 46.8 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.5336 s, 46.5 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 550 1 110.000 MHz 19.76 MB/s 44.60 MB/s 45.03 MB/s microSD card benchmark complete! CPU Temp: 51.920 ℃
microsd-benchmarks.sh
$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 110.000 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads: 140 MB in 3.04 seconds = 46.02 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, 18.6275 s, 22.5 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: Mon Mar 28 14:49:54 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 1588 1848 6973 6981 5650 1811
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=515,sd_overclock=100)
- /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=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=100
sdbench.sh
$ 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: 110 MB in 3.03 seconds = 36.25 MB/sec Timing O_DIRECT disk reads: 110 MB in 3.04 seconds = 36.18 MB/sec Timing O_DIRECT disk reads: 110 MB in 3.05 seconds = 36.12 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 29.2167 s, 18.4 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.6671 s, 20.1 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 26.8017 s, 20.0 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 14.4077 s, 37.3 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 14.0616 s, 38.2 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 13.9808 s, 38.4 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 515 1 85.833 MHz 18.61 MB/s 36.19 MB/s 36.18 MB/s
microsd-benchmarks.sh
$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 85.833 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads: 114 MB in 3.05 seconds = 37.36 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, 19.2661 s, 21.8 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: Sun Mar 13 15:50:17 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 1570 1844 6661 6666 5529 1801
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=500,sd_overclock=100)
- /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=500 #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=100
sdbench.sh
$ sudo ./sdbench.sh CONFIG: core_freq=500,dtparam=sd_overclock=100 CLOCK : SD Bus: 100.000 MHz, CPU: 1050.110 MHz, CPU Temp: 47.616 ℃, SDRAM: 533 MHz VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2000V, 1.2000V, 1.2250V CORE : 500 MHz(500 MHz), turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 126 MB in 3.04 seconds = 41.44 MB/sec Timing O_DIRECT disk reads: 124 MB in 3.02 seconds = 41.12 MB/sec Timing O_DIRECT disk reads: 124 MB in 3.01 seconds = 41.18 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 36.6261 s, 14.7 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 25.4952 s, 21.1 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 24.817 s, 21.6 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 14.4337 s, 37.2 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 14.429 s, 37.2 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 14.4466 s, 37.2 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 500 1 83.333 MHz 18.23 MB/s 35.46 MB/s 41.24 MB/s microSD card benchmark complete! CPU Temp: 48.692 ℃
microsd-benchmarks.sh
$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 83.333 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads: 110 MB in 3.01 seconds = 36.49 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, 19.2509 s, 21.8 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: Mon Mar 28 14:30:18 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 1564 1806 6514 6509 5386 1821
iozone test complete.
microSD card benchmark complete!
config.txt の設定 (force_turbo=1,core_freq=460,sd_overclock=115)
- /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=500 #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=100
sdbench.sh
$ sudo ./sdbench.sh CONFIG: dtparam=sd_overclock=115 CLOCK : 115.000 MHz CORE : 460 MHz, turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 138 MB in 3.01 seconds = 45.84 MB/sec Timing O_DIRECT disk reads: 138 MB in 3.00 seconds = 45.93 MB/sec Timing O_DIRECT disk reads: 138 MB in 3.00 seconds = 45.99 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 28.8835 s, 18.6 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 25.83 s, 20.8 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 25.7494 s, 20.8 MB/s READ: ==== 512+0 records in 512+0 records out 536870912 bytes (537 MB, 512 MiB) copied, 11.0588 s, 48.5 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.0572 s, 48.6 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 11.0776 s, 48.5 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 460 1 115.000 MHz 19.14 MB/s inf MB/s 45.95 MB/s
microsd-benchmarks.sh
$ sudo ./microsd-benchmarks.sh
Raspberry Pi Dramble microSD benchmarks
microSD clock: 115.000 MHz
Running hdparm test...
/dev/mmcblk0:
Timing buffered disk reads: 146 MB in 3.01 seconds = 48.48 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, 19.1859 s, 21.9 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: Mon Mar 14 03:31:39 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 1549 1797 6771 6613 5443 1803
iozone test complete.
microSD card benchmark complete!
ベンチは回るがエラーを吐いててご臨終はしない😅💦
$ sudo ./sdbench.sh CONFIG: dtparam=sd_overclock=115 CLOCK : 115.000 MHz CORE : 460 MHz, turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 140 MB in 3.04 seconds = 46.02 MB/sec Timing O_DIRECT disk reads: 138 MB in 3.02 seconds = 45.64 MB/sec Timing O_DIRECT disk reads: 138 MB in 3.03 seconds = 45.58 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 24.7525 s, 21.7 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 25.5118 s, 21.0 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 24.3477 s, 22.1 MB/s READ: ==== 536870912 bytes (537 MB, 512 MiB) copied, 10.8801 s, 49.3 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 10.8713 s, 49.4 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 10.8793 s, 49.3 MB/s RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 460 1 115.000 MHz 20.59 MB/s 47.07 MB/s 45.76 MB/s dietpi@DietPi-001:~$ sudo ./sdbench.sh CONFIG: dtparam=sd_overclock=115 CLOCK : 115.000 MHz CORE : 460 MHz, turbo=1 DATA : 512 MB, /root/test.dat HDPARM: ====== Timing O_DIRECT disk reads: 136 MB in 3.00 seconds = 45.33 MB/sec Timing O_DIRECT disk reads: 136 MB in 3.01 seconds = 45.25 MB/sec Timing O_DIRECT disk reads: 136 MB in 3.01 seconds = 45.20 MB/sec WRITE: ===== 536870912 bytes (537 MB, 512 MiB) copied, 25.7259 s, 20.9 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 24.8151 s, 21.6 MB/s 536870912 bytes (537 MB, 512 MiB) copied, 24.8374 s, 21.6 MB/s READ: ==== grep: error while loading shared libraries: libpcre.so.3: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 grep: error while loading shared libraries: libpcre.so.3: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 grep: error while loading shared libraries: libpcre.so.3: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 awk: error while loading shared libraries: libm.so.6: cannot open shared object file: Error 74 RESULT (AVG): ============ core_freq turbo sd clock WRITE READ HDPARM 460 1 115.000 MHz 20.38 MB/s 45.23 MB/s
$ dmesg
... [ 138.150177 sdbench.sh (655): drop_caches: 3 [ 149.756570 sdbench.sh (669): drop_caches: 3 [ 160.741658 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #237: block 2: comm sdbench.sh: Directory block failed checksum [ 160.784112 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #237: block 2: comm sdbench.sh: Directory block failed checksum [ 160.809519 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #237: block 2: comm sdbench.sh: Directory block failed checksum [ 161.342185 sdbench.sh (683): drop_caches: 3 [ 161.399670 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #237: block 2: comm sdbench.sh: Directory block failed checksum [ 302.593936 sdbench.sh (818): drop_caches: 3 [ 302.693838 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm grep: Directory block failed checksum [ 302.700784 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm grep: Directory block failed checksum [ 302.703488 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm grep: Directory block failed checksum [ 302.705453 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm grep: Directory block failed checksum [ 302.707803 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm grep: Directory block failed checksum [ 302.720530 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm grep: Directory block failed checksum [ 313.566938 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.569360 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.571238 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.575190 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.577114 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.578975 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.604228 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.606354 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.608187 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 313.610002 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 314.179210 sdbench.sh (832): drop_caches: 3 [ 325.116012 EXT4-fs error: 15 callbacks suppressed [ 325.116033 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.118397 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.120213 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.126643 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.128513 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.130438 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.150076 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.156440 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.158320 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.160740 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 325.719642 sdbench.sh (846): drop_caches: 3 [ 336.660946 EXT4-fs error: 14 callbacks suppressed [ 336.660967 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.663699 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.665557 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.667376 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.669185 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.671025 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.691567 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.697726 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.699877 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum [ 336.703806 EXT4-fs error (device mmcblk0p2): ext4_dx_find_entry:1646: inode #1432: block 4: comm awk: Directory block failed checksum