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<DIV><FONT size=2 face=Arial>Try Puppy linux it works from ram - remove the HDD,
boot from usb :)</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Paul</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=toxicnaan@yahoo.co.uk href="mailto:toxicnaan@yahoo.co.uk">Lee
Hughes</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=dundee@lists.lug.org.uk
href="mailto:dundee@lists.lug.org.uk">Tayside Linux User Group</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, October 18, 2009 2:06
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [dundee] laptop mode power
saving</DIV>
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<TD vAlign=top>Right,<BR><BR>has any got laptop mode working
successfully , i'm trying to get my hard disk to spin down as long as
possible, <BR><BR>i've been using a combination of lm-profile, iotop -o
-d 10 -b<BR><BR>now, i've nailed fire fox from fsyncing all the
time, that's improved things some what,<BR><A
href="http://www.dslreports.com/forum/r23159573-Re-Make-Firefox-3x-more-responsive-with-a-simple-trick">http://www.dslreports.com/forum/r23159573-Re-Make-Firefox-3x-more-responsive-with-a-simple-trick</A><BR><BR>it's
also faster too boot!<BR><BR>however, my hard disk sleeps for
about 2mins, i've zapped syslog and klog for testing,<BR>so there should
be nothing on the system that should need to wake the disk for
writing.<BR><BR>however, kkjournald is waking the disk up, (presumable
to write the journal to disk)<BR>but the file system is mounted with
<BR><BR>/dev/sda1 on / type ext3
(rw,relatime,errors=remount-ro,commit=600)<BR><BR>so, it should only
commit every 10 mins, or when we run low on memory.<BR><BR> PID
USER DISK READ DISK
WRITE SWAPIN IO
COMMAND<BR> 807
root 0
B/s 5.54 K/s 0.00 % 0.00 %
[kjournald]<BR> 3911
user 0
B/s 0.40 K/s 0.00 % 0.00 %
gnome-power-manager<BR><BR><BR>oh,actually i wonder if it's the
gnome power manager, how ironic.. looks like<BR>the gnome power manager
might be forcing a sync...<BR><BR>yes, it seems that a lot of gnome
componets are doing a fsync, thus waking my disk<BR>up.. :-(<BR><BR>all
i want is, while i'm not reading new data(i.e uncached data from disk) ,
i want<BR>applications to write (but delay that write until I say, or a
timeout value).<BR><BR>i think over use of the fsync call may be answer,
but i think there's more to it than that.<BR><BR>my harddrives now been
dormant for 10mins.... spin down nirvarna has been
reached.<BR><BR>looks like killing the gnome power meter has stopped the
spin ups... now that's<BR>ironic.. any replacements? or shall i go
and hack it.<BR><BR>i wonder if this would do ssd's good
too.<BR><BR>thoughts?<BR><BR>Cheers,<BR><BR>Lee<BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR></TD></TR></TBODY></TABLE><BR>
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<P></P>_______________________________________________<BR>dundee GNU/Linux
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