[Yaffs] YAFFS vs. JFFS2 performance

These tests are with a 64MB Infineon flash, 512 byte pages.

44MB MTD partition: (time in seconds)
            JFFS2        YAFFS
Mount time:    1.8            29.46
Umount time:    0.05            0.10
Write 5.2MB:    29.5            9.82
Read 5.2MB    4.5            3.49

Second mount with files in partition:
            3.75            26.51

In general, YAFFS appears to be significantly faster than JFFS2. Is
there a reason why the mounts are so slow? I thought that this was a
feature of YAFFS.

Thanks
Allen