I have heard a lot that YAFFS garbage collection is faster, but I need to write a test to get some numbers. I wonder if we have some test problem to collect garbage collection numbers. By the way, "mount /dev/mtdblock4 /mnt -t yaffs" works for me, but "mount /dev/mtdblock4 /mnt -t yaffs2" does not. I received something like this for yaffs2: # flash_eraseall /dev/mtd4 Erasing 16 Kibyte @ 2b04000 -- 70 % complete. Skipping bad block at 0x02b08000 Erasing 16 Kibyte @ 2bf0000 -- 71 % complete. Skipping bad block at 0x02bf4000 Erasing 16 Kibyte @ 2c54000 -- 72 % complete. Skipping bad block at 0x02c58000 Erasing 16 Kibyte @ 2cdc000 -- 73 % complete. Skipping bad block at 0x02ce0000 Erasing 16 Kibyte @ 3d4c000 -- 99 % complete. # mount /dev/mtdblock4 /mnt -t yaffs2 mount: wrong fs type, bad option, bad superblock on /dev/mtdblock4, or too many mounted file systems Ceco Vitaly Wool wrote: On 9/5/06, goog long wrote: > Could someone tell me how to characterize YAFFS garbage collection? How can > we tell YAFFS garbabe collection is faster or slower than JFFS2? As YAFFS is a purely NAND filesystem and is not to deal with NOR flashes with longer erase times as opposed to JFFS2, its GC is simpler/faster. Vitaly --------------------------------- How low will we go? Check out Yahoo! Messenger’s low PC-to-Phone call rates.