UBIFS

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With kernel 2.6.32

1) booting 2.6.32 kernel on uSD http://build.shr-project.org/tests/mrmoku/2.6.32/images/om-gta02/ download uImage to /boot download modules and untar it to / update uImage link in /boot

2) flash image flash_eraseall /dev/mtd6 nandwrite -p /dev/mtd6 shr-full-eglibc-ipk--20100105-om-gta02.rootfs.ubi (almost the same ubinized image will finish build in few mins as http://build.shr-project.org/shr-unstable/images/om-gta02/shr-full-eglibc-ipk--20100105-om-gta02.rootfs.ubi)

3) then test if it works ubiattach /dev/ubi_ctrl -O 2048 -m 6 mount -t ubifs ubi0:om-gta02-rootfs /media/om ls /media/om

3) update Qi with dfu-util qi built here http://build.shr-project.org/shr-unstable/images/om-gta02/ is still using jffs2 in kernel params but you can use the binary from here http://jama.homelinux.org/org.openembedded.shr.images/om-gta02/qi-s3c2442-1.0.2+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu or build Qi yourself with bitbake from latest shr/merge branch + this patch: http://jama.homelinux.org/org.openembedded.shr.images/om-gta02/0014-qi-update-kernel-params-for-ubi-rootfs.patch

4) flash 2.6.32 also to NAND

5) boot it, test it, play with it

(Written by Martin Jansa [1])

Performance

How to test: Please run 'bonnie\+\+ -u 0:0 -s 32 -m 16 -r 16' on a fresh filesystem. bonnie++ is now in shr-unstable feeds.

UBIFS

max_posedon provided some bonnie++ results using kernel 2.6.29

=== ubifs ===       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
localhost       32M  1531  78  7594  73  4318  76  2195  98 42904  99  2805  87
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   887  94  2802  99   859  98   914  97 18084  99   659  98
localhost,32M,1531,78,7594,73,4318,76,2195,98,42904,99,2804.8,87,16,887,94,2802,99,859,98,914,97,18084,99,659,98

JFFS2

Latest 2.6.29-andy-tracking with jffs2 and SHR-testing (by Dima Kogan[2], with unknown parameters)

Version 1.03c       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
om-gta02       300M   844  96  1552  92  1550  94  1508  96  4252  92 462.4  94
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   174  68 17360  99   275  92   208  80 18970  99   236  79
om-gta02,300M,844,96,1552,92,1550,94,1508,96,4252,92,462.4,94,16,174,68,17360,99,275,92,208,80,18970,99,236,79

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