Re: Boot time with several filesystems on RPXlite DW

Wolfgang Denk [off-list ref] wrote��

quoted

Try trimming down the .config. For example, it doesn't look like you
need IP_PNP enabled as you aren't NFSrooting and can just bring the
interface up later.

This depends. If the application needs network access, it is usually
faster to use IP_PNP instead of loading and running ifconfig and
route. [At least under 2.4; don't know timings for 2.6.]

OK.I tested with no IP_PNP,there was a 2 seconds
decrease on boot time.After setting "verify=no" to
mask CRC32 checksum,the boot time came to 11"78.Then
without IP_PNP,the boot time was 9"69.Close to my
expected 8 seconds.Yeah,there are some special option
in my .config,like framebuffer and USB HOST mode
configuration.

I tried to optimize minimum access times for SDRAM in
U-Boot,almost no obvious improvement.I need time to
optimize SDRAM and FLASH access times.I took
Wolfgang's example to use uncompressed kernel and
ramdisk.

Thanks a lot for your help.

Sam

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