|How Fast is JFFS2 in the NAND Flash on K70/K61 System-On-Module?|
Here is some JFFS2 performance numbers using a 150Mhz K61 SOM. In this test, a 120MB partition in the NAND Flash device (128 MB) is allocated to a JFFS2 file system.
Write to a file in a 120MB JFFS2 file system:
~ # dd if=/dev/zero of=/mnt/100m.file bs=1M count=100
Mount of a 120MB JFFS2 partition containing a 100MB file:
~ # busybox time mount -t jffs2 /dev/mtdblock2 /mnt
Read of a 100MB file from a 120MB JFFS2 file system:
~ # dd if=/mnt/100m.file of=/dev/null bs=1M count=100