OLPC upgrades

Martin Langhoff martin.langhoff at gmail.com
Tue Feb 3 18:34:57 EST 2009

On Wed, Feb 4, 2009 at 1:03 PM,  <david at lang.hm> wrote:
> Ok, what tools can I use to satisfy you of this 'opinion' that
> applications start faster on either KDE or GNOME than on Sugar on the same
> hardware.
> by the way, you are the first person I have heard dispute this.

Erik has done a few things lately that made me change perspective.
Most comparisons have been made against stuff running off the SD-card,
and made our Sugar/Fedora look very slow in comparison. Everyone
jumped on Python/Sugar.

However, our NAND is *slow*, it busy-waits, JFFS2 is slow, and Linux
under a bit of mem pressure (and having no swap) starts discarding
pages, assuming that disk reads are reasonably fast and
non-cpu-blocking. But reading pages from the NAND turns out to be slow
and most importantly it pegs the CPU hard.

Get the debxo or the vanilla fedoras running on the NAND. The
performance delta is not what we thought it would be.


 martin.langhoff at gmail.com
 martin at laptop.org -- School Server Architect
 - ask interesting questions
 - don't get distracted with shiny stuff  - working code first
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