On Wed, Apr 25, 2012 at 06:17:48PM -0700, Eric Nelson wrote: > On 03/28/2012 07:37 AM, Jason Cooper wrote: > >This patch dramatically drops the amount of time u-boot needs to read a > >file from an ext2 partition. On a typical 2 to 5 MB file (kernels and > >initrds) it goes from tens of seconds to a couple seconds. > > > >All we are doing here is grouping contiguous blocks into one read. > > > >Boot tested on Globalscale Technologies Dreamplug (Kirkwood ARM SoC) > >with three different files. sha1sums were calculated in Linux > >userspace, and then confirmed after ext2load. > > > >Signed-off-by: Jason Cooper<u-b...@lakedaemon.net> > > Tested-by: Eric Nelson <eric.nel...@boundarydevices.com>
Thanks for testing! I've copied your results into the commit and will be doing a pull request shortly. thx, Jason. > > Tested on i.MX6 Sabre Lite board loading a file of ~900k: > > Without patch: > > MX6QSABRELITE U-Boot > time ext2load sata 0:1 12000000 > /usr/lib/libperl.so.5.12.4 && crc32 12000000 $filesize > Loading file "/usr/lib/libperl.so.5.12.4" from sata device 0:1 (hda1) > 958032 bytes read > > time: 0.414 seconds, 414 ticks > CRC32 for 12000000 ... 120e9e4f ==> 550deec9 > > With patch: > MX6QSABRELITE U-Boot > time ext2load sata 0:1 12000000 > /usr/lib/libperl.so.5.12.4 && crc32 12000000 $filesize > Loading file "/usr/lib/libperl.so.5.12.4" from sata device 0:1 (hda1) > 958032 bytes read > > time: 0.205 seconds, 205 ticks > CRC32 for 12000000 ... 120e9e4f ==> 550deec9 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
