Wer mich kennt weiß das es, wenn möglich, das erste ist was ausprobiert wird
Als Image habe ich das Build System vom Peter benutzt. Das installiert ein Debian auf der SD-Karte.
Hardware
root@debian:/mnt/nvme# lspci
00:00.0 PCI bridge: Fuzhou Rockchip Electronics Co., Ltd Device 3566 (rev 01)
01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981
root@debian:/mnt/nvme# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 58G 4.7G 51G 9% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 2.0G 0 2.0G 0% /dev/shm
tmpfs 2.0G 9.0M 1.9G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup
tmpfs 391M 0 391M 0% /run/user/1000
/dev/nvme0n1p1 458G 4.1G 431G 1% /mnt/nvme
Software
Kernel
root@debian:/mnt/nvme# uname -a
Linux debian 5.17.0 #1 SMP PREEMPT Thu Apr 7 13:38:56 UTC 2022 aarch64 GNU/Linux
iozone
root@debian:/mnt/nvme# 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: Thu Jun 2 18:53:42 2022
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 46839 71505 73664 72884 44939 69729
102400 16 119646 171084 172574 174223 126924 169845
102400 512 348734 358564 354061 357485 347061 358381
102400 1024 366048 368023 367023 374548 368630 370873
102400 16384 388125 387154 391752 397082 396637 378393
dd
root@debian:/mnt/nvme# dd if=/dev/zero of=sd.img bs=1M count=4096 conv=fdatasync
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB, 4.0 GiB) copied, 23.8028 s, 180 MB/s
root@debian:/mnt/nvme# dd if=/dev/zero of=sd.img bs=4M count=4096 oflag=direct
4096+0 records in
4096+0 records out
17179869184 bytes (17 GB, 16 GiB) copied, 58.4993 s, 294 MB/s