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--- hardware:raspberry_pi:sdcard_overclock:sandisk_128gb_microsdxc_class10_uhs-i_u1_a1 [2022/03/28 10:52] – [設定値割り出し] ともやん
+++ hardware:raspberry_pi:sdcard_overclock:sandisk_128gb_microsdxc_class10_uhs-i_u1_a1 [2022/03/28 12:03] (現在) – ともやん
@@ 行 135: / 行 135: @@
 <WRAP mintbl>
 ^  core_freq (MHz)  ^  dtparam=sd_overclock (MHz)  ^  actual clock (MHz)  ^  judge  ^  benchmark  ^
+|  550 |  110 (=550/5.000) |  <wrap em>boot NG</wrap> |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
+|  525 |  105 (=525/5.000) |  105.000 (=525/5.000) |  **OK**  |  <wrap em>NG\\ checksum error</wrap>  |
+|  520 |  104 (=520/5.000) |  104.000 (=520/5.000) |  **OK**  |  **OK**  |
 |  532 |  100 (=500/5.000) |  88.667 (=532/5.999) |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
 |  515 |  100 (=500/5.000) |  85.833 (=515/6.000) |  <wrap em>NG</wrap>  |  <wrap em>NG</wrap>  |
@@ 行 245: / 行 248: @@
               kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread
        4     2199     2838     5745     5749     5625     2163
+iozone test complete.
+microSD card benchmark complete!
+</code></WRAP>
+==== config.txt の設定 (force_turbo=1,core_freq=520,sd_overclock=104) ====
+<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=520
+##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=104
+#dtparam=sd_overclock=125
+</code></WRAP>
+==== sdbench.sh ====
+<WRAP mincode_long><code>
+$ sudo ./sdbench.sh
+CONFIG: core_freq=520,dtparam=sd_overclock=104
+CLOCK : SD Bus: 104.000 MHz, CPU: 1050.110 MHz, CPU Temp: 43.850 ℃, SDRAM: 533 MHz
+VOLTS : core: 1.4000V, sdram(controller, I/O, physical): 1.2250V, 1.2250V, 1.2250V
+CORE  : 520 MHz(520 MHz), turbo=1
+DATA  : 512 MB, /root/test.dat
+HDPARM:
+======
+ Timing O_DIRECT disk reads: 132 MB in  3.04 seconds =  43.43 MB/sec
+ Timing O_DIRECT disk reads: 130 MB in  3.01 seconds =  43.17 MB/sec
+ Timing O_DIRECT disk reads: 132 MB in  3.03 seconds =  43.60 MB/sec
+WRITE:
+=====
+536870912 bytes (537 MB, 512 MiB) copied, 28.1164 s, 19.1 MB/s
+536870912 bytes (537 MB, 512 MiB) copied, 25.1531 s, 21.3 MB/s
+536870912 bytes (537 MB, 512 MiB) copied, 25.7061 s, 20.9 MB/s
+READ:
+====
+536870912 bytes (537 MB, 512 MiB) copied, 11.7015 s, 45.9 MB/s
+536870912 bytes (537 MB, 512 MiB) copied, 11.4114 s, 47.0 MB/s
+536870912 bytes (537 MB, 512 MiB) copied, 11.4134 s, 47.0 MB/s
+RESULT (AVG):
+============
+core_freq   turbo     sd clock       WRITE        READ        HDPARM
+        1     104.000 MHz   19.50 MB/s   44.50 MB/s   43.39 MB/s
+microSD card benchmark complete!
+CPU Temp: 49.230 ℃
+</code></WRAP>
+==== microsd-benchmarks.sh ====
+<WRAP mincode_long><code>
+$ sudo ./microsd-benchmarks.sh
+Raspberry Pi Dramble microSD benchmarks
+microSD clock: 104.000 MHz
+Running hdparm test...
+/dev/mmcblk0:
+ Timing buffered disk reads: 138 MB in  3.04 seconds =  45.38 MB/sec
+Running dd test...
++0 レコード入力
++0 レコード出力
+419430400 bytes (419 MB, 400 MiB) copied, 17.3536 s, 24.2 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: Mon Mar 28 11:58:39 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
+       4     2502     3183     6179     6185     6043     2372