On Feb 4, 2009, at 12:47 AM, Bobby Powers wrote: > On Tue, Feb 3, 2009 at 7:55 PM, <da...@lang.hm> wrote: >> On Wed, 4 Feb 2009, Martin Langhoff wrote: >> >>> On Wed, Feb 4, 2009 at 1:03 PM, <da...@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. >> >> I know that debxo will install on the NAND. I haven't done so on my >> systems yet as I wanted to leave the NAND intact to test the official >> builds. I'll go ahead and do this on one of my boxes. >> >> most of my testing has been via USB, do you have any idea how it >> compares >> performance wise to the NAND and SD card? SD >> USB > NAND
>> is there any ability to not use JFFS2 on the NAND? > > I believe UBIFS is the up and coming JFFS2 killer: > http://www.linux-mtd.infradead.org/doc/ubifs_whitepaper.pdf > I don't know the status of it tho, I believe there was some testing at > 1CC recently with mixed results. Testing of UBIFS at 1CC ran into a bug which was patched and has now been running for months without problems. See: http://wiki.laptop.org/go/UBIFS_on_XO Cheers, wad _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
