i.MX ProcessorsのトピックRe: mmc loading time reduction

mmc loading time reduction

sachusanal — Mon, 18 May 2015 10:54:01 GMT

Dear Sir ,

when i am measuring my boot log of kernel i found that 8 seonds time is using for the mmcblk0p1 mount

i am using MFG tool for flashing purpose.

Board:MX6qsabresd board

[ 8.405572] mmc3: new high speed SDIO card at address 0001

Auto-mount of [/media/mmcblk0p1] successful

[ 16.782057] EXT3-fs: barriers not enabled

could you please help me to reduce the time for create the partition.

i hereby attach the full kernel log here please find out.

Original Attachment has been moved to: printk-log.txt.zip

jamesbone — Wed, 27 May 2015 14:52:50 GMT

As Victor told you in another post that you submit

Actually ext3 filesystem is quite complex and mounting it takes some time.

It may take some significant time even on PC:

root@tecno:~# time mount /dev/sdb1 /mnt/sd

real 0m0.402s

user 0m0.008s

sys 0m0.016s

root@tecno:~#

Here /dev/sdb1 is quite small and fast SD card (4GB class 10 one).

If mounting time is very critical for you you can use other filesystem instead.

However it may cause some compatibility issues.

sachusanal — Thu, 04 Jun 2015 05:42:05 GMT

hi ,

Thanks for your response..

i cant change my file system.It should .ext3 because we are the finalstage o0f our project