UBIFS

Latest revision as of 10:07, 10 February 2012

[edit] With kernel 2.6.34

1) booting 2.6.34 kernel on uSD

http://build.shr-project.org/tests/mrmoku/2.6.34/images/om-gta02/

(Please note as of July 2010 unstable is 2.6.32+: http://build.shr-project.org/shr-unstable/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

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

4) Setup bootloader U-boot, U-boot-gena2x or Qi:

4.1) configure U-boot U-Boot_commands#Environment

change kernel parameters from:

rootfstype=jffs2 root=/dev/mtdblock6

to:

rootfstype=ubifs ubi.mtd=6,2048 root=ubi0:om-gta02-rootfs

4.2) update Qi with dfu-util

http://build.shr-project.org/shr-unstable/images/om-gta02/

qi-s3c* expects jffs2 as rootfs

qi-ubi-s3c* expects ubifs as rootfs (with rootfs name om-gta02-rootfs which corresponds to name in ubinized image)

it is now in OE repository as qi_git.bb and qi-ubi_git.bb.

5) flash 2.6.32 also to NAND

6) boot it, test it, play with it

(Written by Martin JaMa Jansa [1])

[edit] Alternative

( using slower but always available dfu-util )

update Qi with dfu-util

dfu-util -a u-boot -R -D /qi-ubi-s3c2442-1.0.2-r1+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu # for gta02

install kernel

dfu-util -a kernel -R -D ./uImage-2.6.29-oe11+gitr119862+a15608f241a40b41fed5bffe511355c2067c4e88-r8-om-gta02.bin

install rootfs

dfu-util -a rootfs -R -D  /home/ew/Desktop/shr-full-eglibc-ipk--20100507-om-gta02.rootfs.ubi #  not the rootfs.ubifs image use rootfs.ubi file!

make shure that Qi is booting the NAND ( remove sd card or touch /boot/noboot-GTA02 )
boot GTA02 with Qi ( switch it on )

(Written by pwgen )

[edit] 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. (Note that this example uses only a 32MiB file, which easily fits in the GTA02's RAM and does not provide accurate speeds due to Linux's disk cache. For good results, use at least '-s 300').

[edit] 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

qi-ubi booting 2.6.29-oe11 with shr-lite-rootfs.ubi (parameters as indicated above, boot to desktop in 90sec):

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
16              32M  1416  69  6874  67  4271  54  2126  97 42582  98  3129  93
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   936  97  2525  97   853  95   926  96 17800  98   638  95
16,32M,1416,69,6874,67,4271,54,2126,97,42582,98,3128.9,93,16,936,97,2525,97,853,95,926,96,17800,98,638,95

qi-ubi booting 2.6.31-oe1 with shr-lite-rootfs.ubi (parameters as indicated above, boot to desktop in 51sec):

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
16              32M  2046  86 21393  21  8687  36  2231  94 52556 100  5118  99
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16  1924  94 12296  99  1966  96  1888  93 +++++ +++  1492  95
16,32M,2046,86,21393,21,8687,36,2231,94,52556,100,5117.9,99,16,1924,94,12296,99,1966,96,1888,93,+++++,+++,1492,95

qi-ubi booting 2.6.34-r7-oe17 with shr-lite-rootfs.ubi (parameters as indicated above):

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
16              32M  2089  88 20845   8  9938  27  2341  98 53687  99  4661  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  2189  96 13423  99  2142  94  2125  93 +++++ +++  1681  97
16,32M,2089,88,20845,8,9938,27,2341,98,53687,99,4660.5,87,16,2189,96,13423,99,2142,94,2125,93,+++++,+++,1681,97

[edit] 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

Kernel 2.6.32, parameters as indicated above.

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
16              32M   614  97  1802  96  1776  97  1155  97 33702  98  1282  97
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   197  96 +++++ +++   209  95   196  95 +++++ +++   207  95
16,32M,614,97,1802,96,1776,97,1155,97,33702,98,1282.2,97,16,197,96,+++++,+++,209,95,196,95,+++++,+++,207,95

[edit] Comparsion with ext on uSD

[edit] ext3, async

=== ext3, async === ------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  1122  69  1911  40  2288  28  1832  82 43012  99  2923  98
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   111  96 18460  95  1315  85   111  95 20824  99   258  75
localhost,32M,1122,69,1911,40,2288,28,1832,82,43012,99,2923.0,98,16,111,96,18460,95,1315,85,111,95,20824,99,258,75

[edit] ext2, sync

=== ext2, sync ===  ------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    70   5   122   3   970  11  2196  98 42969  99  56.1   1
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16    18  12 17609  89    14   2    18  12 20165  98     6   1
localhost,32M,70,5,122,3,970,11,2196,98,42969,99,56.1,1,16,18,12,17609,89,14,2,18,12,20165,98,6,1

[edit] ext2, async

=== ext2, async === ------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  1319  70  2637  29  1997  16  1904  86 42504  99  3151  98
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16   166  95 19707  98  2588  97   170  96 20644  99   321  63
localhost,32M,1319,70,2637,29,1997,16,1904,86,42504,99,3151.4,98,16,166,95,19707,98,2588,97,170,96,20644,99,321,63

[edit] Status

[edit] 12.5.2010

dfu-util confirmed to work too (by pwgen), but will be slower than nandwrite.

UBIFS

From Openmoko

Latest revision as of 10:07, 10 February 2012

Contents

[edit] With kernel 2.6.34

[edit] Alternative

[edit] Performance

[edit] UBIFS

[edit] JFFS2

[edit] Comparsion with ext on uSD

[edit] ext3, async

[edit] ext2, sync

[edit] ext2, async

[edit] Status

[edit] 12.5.2010

Views

Personal tools

With kernel 2.6.32

Performance

UBIFS

JFFS2

Search

Tools

@@ Line 1: / Line 1: @@
-== With kernel 2.6.32 ==
+== With kernel 2.6.34 ==
+) booting 2.6.34 kernel on uSD
+http://build.shr-project.org/tests/mrmoku/2.6.34/images/om-gta02/
+(Please note as of July 2010 unstable is 2.6.32+: http://build.shr-project.org/shr-unstable/images/om-gta02/ )
-) 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
 ) 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)
 ) 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
-) update Qi with dfu-util
-qi built here
+) Setup bootloader [[U-boot]], [[U-boot-gena2x]] or [[Qi]]:
+.1) configure U-boot [[U-Boot_commands#Environment]]
+change kernel parameters from:
+<pre>
+rootfstype=jffs2 root=/dev/mtdblock6
+</pre>
+to:
+<pre>
+rootfstype=ubifs ubi.mtd=6,2048 root=ubi0:om-gta02-rootfs
+</pre>
+.2) update Qi with dfu-util
 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
-) flash 2.6.32 also to NAND
+qi-s3c* expects jffs2 as rootfs
-) boot it, test it, play with it
+qi-ubi-s3c* expects ubifs as rootfs (with rootfs name om-gta02-rootfs which corresponds to name in ubinized image)
-(Written by Martin Jansa [http://www.mail-archive.com/community@lists.openmoko.org/msg56825.html])
+it is now in OE repository as qi_git.bb and qi-ubi_git.bb.
+) flash 2.6.32 also to NAND
+) boot it, test it, play with it
+(Written by Martin JaMa Jansa [http://www.mail-archive.com/community@lists.openmoko.org/msg56825.html])
+=== Alternative ===
+( using slower but always available dfu-util )
+# update Qi with dfu-util
+#: <pre>dfu-util -a u-boot -R -D /qi-ubi-s3c2442-1.0.2-r1+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu # for gta02</pre>
+# install kernel
+#: <pre>dfu-util -a kernel -R -D ./uImage-2.6.29-oe11+gitr119862+a15608f241a40b41fed5bffe511355c2067c4e88-r8-om-gta02.bin </pre>
+# install rootfs
+#: <pre>dfu-util -a rootfs -R -D  /home/ew/Desktop/shr-full-eglibc-ipk--20100507-om-gta02.rootfs.ubi #  not the rootfs.ubifs image use rootfs.ubi file!</pre>
+# make shure that Qi is booting the NAND ( remove sd card or touch /boot/noboot-GTA02 )
+#: boot GTA02 with Qi (  switch it on )
+(Written by pwgen )
 == Performance ==
-=== UBIFS ===
+How to test:
-max_posedon provided some bonnie++ results from UBI (http://pastebin.ca/1739342) using kernel 2.6.29
+Please run 'bonnie++ -u 0:0 -s 32 -m 16 -r 16' on a fresh filesystem. bonnie++ is now in shr-unstable feeds.  (Note that this example uses only a 32MiB file, which easily fits in the GTA02's RAM and does not provide accurate speeds due to Linux's disk cache. For good results, use at least '-s 300').
+=== [http://en.wikipedia.org/wiki/UBIFS UBIFS] ===
+max_posedon provided some bonnie++ results using kernel 2.6.29
+<pre>
+=== 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
+   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
+</pre>
+[http://build.shr-project.org/shr-unstable/images/om-gta02/qi-ubi-s3c2442-1.0.2-r0+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu qi-ubi] booting [http://build.shr-project.org/shr-unstable/images/om-gta02/uImage-2.6.29-oe11+gitr119862+a15608f241a40b41fed5bffe511355c2067c4e88-r7-om-gta02.bin 2.6.29-oe11] with [http://build.shr-project.org/shr-unstable/images/om-gta02/shr-lite-eglibc-ipk--20100115-om-gta02.rootfs.ubi shr-lite-rootfs.ubi] (parameters as indicated above, boot to desktop in 90sec):
 <pre>
-root@localhost / $ bonnie\+\+ -u 0:0
-Using uid:0, gid:0.
-Writing with putc()...done
-Writing intelligently...done
-Rewriting...done
-Reading with getc()...done
-Reading intelligently...done
-start 'em...done...done...done...
-Create files in sequential order...done.
-Stat files in sequential order...done.
-Delete files in sequential order...done.
-Create files in random order...done.
-Stat files in random order...done.
-Delete files in random order...done.
 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
-localhost      300M  1512  72  4878  60  2696  58  1587  98  5519  96 640.6  96
+              32M  1416  69  6874  67  4271  54  2126  97 42582  98  3129  93
                      ------Sequential Create------ --------Random Create--------
                      -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
                files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
-   889  98  2619  99   802  95   883  97 15728  87   640  98
+   936  97  2525  97   853  95   926  96 17800  98   638  95
-localhost,300M,1512,72,4878,60,2696,58,1587,98,5519,96,640.6,96,16,889,98,2619,99,802,95,883,97,15728,87,640,98
+,32M,1416,69,6874,67,4271,54,2126,97,42582,98,3128.9,93,16,936,97,2525,97,853,95,926,96,17800,98,638,95
 </pre>
+[http://build.shr-project.org/shr-unstable/images/om-gta02/qi-ubi-s3c2442-1.0.2-r0+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu qi-ubi] booting [http://build.shr-project.org/tests/mrmoku/2.6.32/images/om-gta02/uImage-2.6.31-oe1+gitr157549+dd32737aa524e09c1d141a0e735dd58674552244-r6-om-gta02.bin 2.6.31-oe1] with [http://build.shr-project.org/shr-unstable/images/om-gta02/shr-lite-eglibc-ipk--20100115-om-gta02.rootfs.ubi shr-lite-rootfs.ubi] (parameters as indicated above, boot to desktop in 51sec):
+<pre>
+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
+              32M  2046  86 21393  21  8687  36  2231  94 52556 100  5118  99
+                    ------Sequential Create------ --------Random Create--------
+                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
+              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
+  1924  94 12296  99  1966  96  1888  93 +++++ +++  1492  95
+,32M,2046,86,21393,21,8687,36,2231,94,52556,100,5117.9,99,16,1924,94,12296,99,1966,96,1888,93,+++++,+++,1492,95
+</pre>
-=== JFFS2 ===
+[http://build.shr-project.org/shr-unstable/images/om-gta02/old/qi-ubi-s3c2442-1.0.2-r5+gitr0+c38b062a609f1442e6a9e13005cfbdfd59a5ac0d.udfu qi-ubi] booting [http://build.shr-project.org/shr-unstable/images/om-gta02/old/uImage-2.6.34-r7-oe17-om-gta02.bin 2.6.34-r7-oe17] with [http://build.shr-project.org/shr-unstable/images/om-gta02/old/shr-lite-eglibc-ipk--20110404-om-gta02.rootfs.ubi shr-lite-rootfs.ubi] (parameters as indicated above):
-Latest 2.6.29-andy-tracking with jffs2 and SHR-testing (by  Dima Kogan[http://www.mail-archive.com/shr-user@lists.shr-project.org/msg02761.html])
+<pre>
+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
+              32M  2089  88 20845   8  9938  27  2341  98 53687  99  4661  87
+                    ------Sequential Create------ --------Random Create--------
+                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
+              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
+  2189  96 13423  99  2142  94  2125  93 +++++ +++  1681  97
+,32M,2089,88,20845,8,9938,27,2341,98,53687,99,4660.5,87,16,2189,96,13423,99,2142,94,2125,93,+++++,+++,1681,97
+</pre>
+=== [[JFFS2]] ===
+Latest 2.6.29-andy-tracking with jffs2 and SHR-testing (by  Dima Kogan[http://www.mail-archive.com/shr-user@lists.shr-project.org/msg02761.html], with unknown parameters)
 <pre>
-Using uid:0, gid:0.
-Writing with putc()...done
-Writing intelligently...done
-Rewriting...done
-Reading with getc()...done
-Reading intelligently...done
-start 'em...done...done...done...
-Create files in sequential order...done.
-Stat files in sequential order...done.
-Delete files in sequential order...done.
-Create files in random order...done.
-Stat files in random order...done.
-Delete files in random order...done.
 Version 1.03c       ------Sequential Output------ --Sequential Input- --Random-
                      -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
@@ Line 92: / Line 147: @@
 </pre>
-Please run bonnie++ on jffs2 if you have jffs2 partition (bonnie++ is now in shr-unstable feeds).
+Kernel 2.6.32, parameters as indicated above.
+<pre>
+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
+              32M   614  97  1802  96  1776  97  1155  97 33702  98  1282  97
+                    ------Sequential Create------ --------Random Create--------
+                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
+              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
+   197  96 +++++ +++   209  95   196  95 +++++ +++   207  95
+,32M,614,97,1802,96,1776,97,1155,97,33702,98,1282.2,97,16,197,96,+++++,+++,209,95,196,95,+++++,+++,207,95
+</pre>
+=== Comparsion with ext on uSD ===
+==== [http://en.wikipedia.org/wiki/Ext3 ext3], async ====
+<pre>
+=== ext3, async === ------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  1122  69  1911  40  2288  28  1832  82 43012  99  2923  98
+                    ------Sequential Create------ --------Random Create--------
+                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
+              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
+   111  96 18460  95  1315  85   111  95 20824  99   258  75
+localhost,32M,1122,69,1911,40,2288,28,1832,82,43012,99,2923.0,98,16,111,96,18460,95,1315,85,111,95,20824,99,258,75
+</pre>
+==== [http://en.wikipedia.org/wiki/Ext2 ext2], sync ====
+<pre>
+=== ext2, sync ===  ------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    70   5   122   3   970  11  2196  98 42969  99  56.1   1
+                    ------Sequential Create------ --------Random Create--------
+                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
+              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
+    18  12 17609  89    14   2    18  12 20165  98     6   1
+localhost,32M,70,5,122,3,970,11,2196,98,42969,99,56.1,1,16,18,12,17609,89,14,2,18,12,20165,98,6,1
+</pre>
+==== ext2, async ====
+<pre>
+=== ext2, async === ------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  1319  70  2637  29  1997  16  1904  86 42504  99  3151  98
+                    ------Sequential Create------ --------Random Create--------
+                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
+              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
+   166  95 19707  98  2588  97   170  96 20644  99   321  63
+localhost,32M,1319,70,2637,29,1997,16,1904,86,42504,99,3151.4,98,16,166,95,19707,98,2588,97,170,96,20644,99,321,63
+</pre>
+== Status ==
+=== 12.5.2010 ===
+dfu-util confirmed to work too (by pwgen), but will be slower than nandwrite.
+[[Category:Flashing SHR]]