<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Tiago Marques</b> <span dir="ltr"><<a href="mailto:tiagomnm@gmail.com">tiagomnm@gmail.com</a>></span><br>Date: Sat, May 16, 2009 at 6:18 PM<br>
Subject: Re: The XO-1.5 software plan.<br>To: <a href="mailto:bens@alum.mit.edu">bens@alum.mit.edu</a><br><br><br><div class="gmail_quote"><div class="gmail_quote"><div class="im">On Sat, May 16, 2009 at 5:41 PM, Benjamin M. Schwartz <span dir="ltr"><<a href="mailto:bmschwar@fas.harvard.edu" target="_blank">bmschwar@fas.harvard.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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Chris Ball wrote:<br>
> We have some good news: OLPC has decided to base its software release<br>
> for the new XO-1.5 laptop on Fedora 11. Unlike previous releases, we<br>
> plan to use a full Fedora desktop build, booting into Sugar but giving<br>
> users the option to switch into a standard GNOME install instead.<br>
> (This will mostly be useful for older kids in high school.)<br>
><br>
> I'm particularly happy about this plan because it will allow us to<br>
> catch up with the awesome work present in the Sugar community's most<br>
> recent release, Sugar 0.84, as well as merging the latest Fedora work<br>
> and including GNOME into the mix for the first time. The new machines<br>
> will have 1GB of RAM and 4GB of flash, so we have enough room for both<br>
> environments at once.<br>
</div></blockquote></div><div><br>
Hi,<br>
<br>
Where does rainbow and bitfrost come in all of this?<br>
</div><div class="im"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><br>
</div>This raises an interesting question: should we still be using a compressed<br>
filesystem? On the XO-1, an uncompressed FS was essentially not an<br>
option. There would be almost no space left for users' files after the<br>
uncompressed system files. Unfortunately, this causes tremendous<br>
slowdowns all over the system, as it causes reads from flash to (a) be<br>
CPU-limited, and (b) compete with the rest of the system for CPU time.<br>
Writes are even worse.<br>
<br>
On the 1.5, we will have more space (so less need for compression), but<br>
more system files, and also more CPU to handle it. I think we should<br>
remember to test the final images both with and without compression.<br>
</blockquote></div><div><br>
The 1GHz C7 is still a slow cpu, as it seems from reviews of similar netbooks:<br>
<br>
<a href="http://www.notebookreview.com/default.asp?newsID=4352" target="_blank">http://www.notebookreview.com/default.asp?newsID=4352</a><br>
<br>
For most tasks it is slower than an 600MHz Celeron M and that's not
exactly fast. Does anyone more familiar with the hardware have any idea
of how fast it is when compared to the Geode?<br>
</div><div class="im"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Of course, this equation gets still more complicated depending on whether<br>
we have MTD or FTL flash. Choosing a filesystem will be an interesting<br>
exercise.</blockquote></div><div><br>
Is MTD still up for discussion? Wasn't it going to be FTL?<br>
<br>
Best regards,<br><font color="#888888">
<br>
Tiago Marques<br>
</font></div><div class="im"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
<br>
- --Ben<br>
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