ubifs, ubiblk(formatted with vfat) and yaffs2 test.

[KeunO Park]

>
> [test board]
> cpu:s3c2448 400MHz sdram:64MB nand:128MB
>
> the copying file is 10MB size and created with /dev/urandom.
> so I think that there may be some disadvantage to ubifs using compressor.
>
> [write test]
>
> yaffs2
> write: 10.20s, 12.09s, 12.24s avg:11.51s (868KB/s)
> load avg right after copy&sync: 0.03 -> 0.11
>
> ubifs (LZO)
> write: 14.45s, 14.40s, 14.45s avg:14.43s (693KB/s)
> load avg right after copy&sync: 0.03 -> 0.53
>
> ubifs (ZLIB)
> write : 27.17s, 27.18s, 27.21s avg:27.18 (367KB/s)
> load avg right after copy&sync: 0.03 -> 0.80
>
> ubifs (No Compression)
> write: 6.69s, 10.90s, 10.98s avg:9.52s (1050KB/s)
> load avg right after copy&sync: 0.03 -> 0.43
>
> ubiblk(vfat mount)
> read: 0.46s, 0.47s, 0.46s avg: 0.463s (21.5MB/s)
> write: 12.13s, 14.95s, 12.61s avg:13.23s (755KB/s)
> load avg right after copy&sync: 0.02 -> 0.31
>
> With above result, it seems that there is some overload in ubi.
>

with the same device, I did the same test on micro SD.
write: 4.98s, 5.43s, 6.34s avg:5.58s (1792KB/s)
load avg right after copy&sync: 0.03 -> 0.33

It seems that there may be no meaning about comparing with ubifs and
microSD. but, I think that is helpful to someone in this mailing list.


regards,
KeunO Park.