I'll definitely give this a try. I'm thinking this will be the last gasp for my family and friend's G1G1 XO-1. With a more uptodate linux, more memory and performance (because of the uncompressed file system), and ability to have swap, this brings the XO-1 back to usability.
I have been using an SD card install but with the latest release the support for SD card boot/install was not provided and I hadn't been able to work through the fixes needed myself. --Chris On Fri, Jun 20, 2014 at 9:49 PM, James Cameron <qu...@laptop.org> wrote: > On Fri, Jun 20, 2014 at 09:39:32AM +1000, James Cameron wrote: >> Therefore using an SD card instead of NAND flash should increase I/O >> performance, decrease processor time, and increase available memory. > > I've measured the increase in available memory. > > With the laptop freshly booted at the activity view and the journal > icon coloured, a program is run that consumes memory in order to > determine how much is available; > > - moving the root filesystem from NAND to SDIO is a 7% gain, from 146 > MB to 156 MB, > > - leaving the root filesystem on NAND and adding 64 MB swap on SDIO is > a 31% gain, from 146 MB to 191 MB, > > - moving the root filesystem from NAND to SDIO and adding 64 MB swap > on SDIO is a 41% gain, from 146 MB to 206 MB. > > A visualisation of the results: > > https://plot.ly/~quozl/7/xo-1-256-mb-usable-memory-1321-nand-vs-sdio-as-root/ > > The test program: > > http://dev.laptop.org/~quozl/z/1WyA0M.txt (oom.c) > > Measurement was the anon-rss in the kernel OOM message, e.g. > > [ 761.307460] Killed process 937 (oom) total-vm:197692kB, anon-rss:183048kB, > file-rss:4kB > > -- > James Cameron > http://quozl.linux.org.au/ > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel