F9 for Eeepc
orion at cora.nwra.com
Tue Jan 29 00:20:07 UTC 2008
Jonathan Underwood wrote:
> On 25/01/2008, John (J5) Palmieri <johnp at redhat.com> wrote:
>> On Fri, 2008-01-25 at 15:39 -0700, Orion Poplawski wrote:
>>> - Flash drive. Want to minimize writes. One attempt (eeedora) uses the
>>> ext2 filesystem rather than ext3. Does that help? Are there things to
>>> take from stateless projects for minimizing writes to /var?
>> jffs2 is what we use on the OLPC, there is another FS in the works that
>> is a lot better for large flash though. I forget the name. On modern
>> flash you don't have to worry about rewrites as much though since the
>> hardware randomizes writes. What kills the disk on older flash drives
>> is writing to the journal in Ext3 and writing to the FAT on Fat disks.
>> Both of those are fixed locations which stress out a small portion of
>> the disk. Each flash device has only so many writes per bit before that
>> bit dies. By distributing it over the whole disk it takes a lot longer
>> to destroy. I would check the specs on the flash drive that came with
>> the Eee. Another thing you might want to do is not have a swap
>> partition. Apps run fine without swap, you just might run into OOM more
> The eeepc drive has a FTL, so these drives don't appear as flash
> drives to the OS, so jffs, yaffs, logfs and the like aren't applicable
> to the eeepc, as I understand it.
The drive appears as a standard IDE drive. dmesg reports the drive as a
"SILICONMOTION SM223AC". Google doesn't seem to turn up much other
than users' reports on their eeePC :-).
Technical Manager 303-415-9701 x222
NWRA/CoRA Division FAX: 303-415-9702
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