On Tue, Nov 27, 2012 at 02:39:05PM -0600, Bruce Dubbs wrote: > Bruce Dubbs wrote: > > Just following up on this. > > First, the Intel Atom, at least model D2700, does not have 4 cores. It > has 2 cores, each with hyper threading. This gives the appearance of 4 > cores but not the performance.
I think the problem is the architecture of the atom - hyperthreading on my SandyBridge i3 works well. OTOH, my netbook where I'm typing this has a single atom with hyperthreading : you can probably guess why I'm in no hurry to replace 'buntu with LFS on it :) > > The build of LFS went without problem, but it was slow. SBU was 384 > seconds. My P6 from 2005 has an SBU value of 135! > > I did not build with any testing and the total build time was about 57 > SBU or about 6 hours. I wouldn't recommend this processor for any > demanding tasks. > True - it's targetted at low-power usage. > Building the kernel was a little problematic. I used 'make > x86_64_defconfig' and didn't catch the fact that this didn't have > devtmpfs or ext4 enabled. After fixing those issues, the system booted > just as expected. > > I use a separate /boot partition. Installing grub worked fine, but I > did forget to mount /dev in the chroot environment at first which caused > grub-install to fail. I do like the grub2 boot organization: > > boot/grub/ > boot/grub/i386-pc/ > boot/grub/locale/ > > I generally make this partition 100M, but with a gpt partition table, it > formats out to 93M. It was pretty full with the Debian entries. The > grub directory and config files don't use a lot, but initrd files do: > [...] > -rw-r--r-- 1 root root 1.2M May 6 2012 System.map-2.6.32-5-486 > -rw-r--r-- 1 root root 2.2M Nov 27 13:41 System.map-3.6.7-lfs-20121122 I've never found any reason to install System.map - doesn't save a lot, but it might help. > -rw-r--r-- 1 root root 126K Nov 27 11:03 config-3.2.0-4-amd64 > -rw-r--r-- 1 root root 74K Nov 27 13:41 config-3.6.7-lfs-20121122 Don't you use /proc/config.gz ? Sure, it doesn't take a lot of space, but I either use a good kernel and 'zcat /proc/config.gz >.config' or I have a problem and look at the .config while the build files are still around. > -rw-r--r-- 1 root root 12M Sep 29 02:38 initrd.img-2.6.32-5-486 > -rw-r--r-- 1 root root 12M Sep 29 02:38 initrd.img-2.6.32-5-686 Even if you want the 32-bit system, I doubt that you need a 486 version. > -rw-r--r-- 1 root root 8.9M Nov 27 11:03 initrd.img-2.6.32-5-amd64 > -rw-r--r-- 1 root root 9.7M Nov 27 11:03 initrd.img-3.2.0-4-amd64 > -rw-r--r-- 1 root root 2.1M May 6 2012 vmlinuz-2.6.32-5-486 > -rw-r--r-- 1 root root 2.2M May 6 2012 vmlinuz-2.6.32-5-686 > -rw-r--r-- 1 root root 2.4M Nov 27 11:04 vmlinuz-2.6.32-5-amd64 > -rw-r--r-- 1 root root 2.7M Nov 27 11:04 vmlinuz-3.2.0-4-amd64 > -rw-r--r-- 1 root root 4.2M Nov 27 13:42 vmlinuz-3.6.7-lfs-20121122 > > Compare the LFS kernel size, 4.2M, the the combination of kernel+initrd > or the others. Each is more than 12M. I'll probably delete the > redundant Debian files if I need more room. > My recent desktop kernels are all around 4.0 to 4.2 MB. You don't need to delete very much to get enough space for loads of kernels - as long as you clean out the old rubbish when /boot gets full. > Next I'll start doing some selected BLFS packages but I don't expect any > issues. > > -- Bruce > Good luck with your patience - I'm reminded that when I first came here I was using a K6-2 with 100MHz memory, but the current toolchain really wants fast processors. I think you said you only had 2GB RAM ? - might want a load of swap, depending on what you are building. ĸen -- das eine Mal als Tragödie, das andere Mal als Farce -- http://linuxfromscratch.org/mailman/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
