After reading the paper in the link below: https://lwn.net/Articles/428584/
I think the slow writing to my sd card is not strange, see below: - my card is a kingston class 4 card, not a "high speed" card - writing to sd card is a slow action because of storage feature of sd card, also optimization inside card is often done as assumption of fat fs, see both details in the link above - the partition for rootfs is not segment aligned, which is also pointed by the paper (had observed the unalignement before, almost the start sector number in each access is odd number) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/784421 Title: natty slow boot on pandaboard(rev A1) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-ti-omap4/+bug/784421/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs