[dundee] laptop mode power saving

Sun Oct 18 17:48:24 UTC 2009

My netbook does run like it's on speed with Arch & Openbox :) Battery life
great. SRIron runs nice & quick, although not very configurable it does the
job for just a bit of general browsing.

Ant

2009/10/18 Nicholas Walker <tel0seh at googlemail.com>

> remove those bloated UI's and run openbox instead :D
>
>
> On Sun, Oct 18, 2009 at 4:44 PM, Lee Hughes <toxicnaan at yahoo.co.uk> wrote:
>
>> hehe.. i suppose i could, just trying to get extended battery life. tee
>> hee..
>>
>> it's seems to be working a little better now.... looks like gnome is full
>> a fsync's
>>
>> fsync's seem to wake my system up!!!
>>
>> how do i get rid of them.
>>
>>
>> --- On *Sun, 18/10/09, Jennifer higgins <
>> sauntering.with.scissors at gmail.com>* wrote:
>>
>>
>> From: Jennifer higgins <sauntering.with.scissors at gmail.com>
>> Subject: Re: [dundee] laptop mode power saving
>> To: "Tayside Linux User Group" <dundee at lists.lug.org.uk>
>> Date: Sunday, 18 October, 2009, 3:20 PM
>>
>>
>> oh just power the laptop down you big geek ;)
>>
>> 2009/10/18 Lee Hughes <toxicnaan at yahoo.co.uk<http://mc/compose?to=toxicnaan@yahoo.co.uk>
>> >
>>
>>>  hmm. well it seems that firefox writes one more file which is not to
>>> it's cache or
>>> it's profile...it's...
>>>
>>> lsof | grep firefox | grep tmp
>>>
>>> firefox   27357       user   72u      REG        8,1        0  6177091
>>> /var/tmp/etilqs_2SWFrJKOPJgPeet (deleted)
>>>
>>> etilqs seemed to be sqlite backwards?
>>>
>>> bizzare.... any idea's what that is or how to relocated it to my ramdisk?
>>>
>>> Cheers,
>>> Lee
>>>
>>>
>>>
>>> --- On *Sun, 18/10/09, Lee Hughes <toxicnaan at yahoo.co.uk<http://mc/compose?to=toxicnaan@yahoo.co.uk>
>>> >* wrote:
>>>
>>>
>>> From: Lee Hughes <toxicnaan at yahoo.co.uk<http://mc/compose?to=toxicnaan@yahoo.co.uk>
>>> >
>>> Subject: [dundee] laptop mode power saving
>>> To: "Tayside Linux User Group" <dundee at lists.lug.org.uk<http://mc/compose?to=dundee@lists.lug.org.uk>
>>> >
>>> Date: Sunday, 18 October, 2009, 3:06 PM
>>>
>>>
>>> Right,
>>>
>>> has any got laptop mode working successfully , i'm trying to get my hard
>>> disk to spin down as long as possible,
>>>
>>> i've been using a combination of lm-profile, iotop -o -d 10 -b
>>>
>>> now,  i've nailed fire fox from fsyncing all the time, that's improved
>>> things some what,
>>>
>>> http://www.dslreports.com/forum/r23159573-Re-Make-Firefox-3x-more-responsive-with-a-simple-trick
>>>
>>> it's also faster too boot!
>>>
>>> however,  my hard disk sleeps for about 2mins, i've zapped syslog and
>>> klog for testing,
>>> so there should be nothing on the system that should need to wake the
>>> disk for writing.
>>>
>>> however, kkjournald is waking the disk up, (presumable to write the
>>> journal to disk)
>>> but the file system is mounted with
>>>
>>> /dev/sda1 on / type ext3 (rw,relatime,errors=remount-ro,commit=600)
>>>
>>> so, it should only commit every 10 mins, or when we run low on memory.
>>>
>>>   PID USER      DISK READ  DISK WRITE   SWAPIN    IO    COMMAND
>>>   807 root           0 B/s    5.54 K/s  0.00 %  0.00 % [kjournald]
>>>  3911 user           0 B/s    0.40 K/s  0.00 %  0.00 %
>>> gnome-power-manager
>>>
>>>
>>> oh,actually i wonder  if it's the gnome power manager, how ironic.. looks
>>> like
>>> the gnome power manager might be forcing a sync...
>>>
>>> yes, it seems that a lot of gnome componets are doing a fsync, thus
>>> waking my disk
>>> up.. :-(
>>>
>>> all i want is, while i'm not reading new data(i.e uncached data from
>>> disk) , i want
>>> applications to write (but delay that write until I say, or a timeout
>>> value).
>>>
>>> i think over use of the fsync call may be answer, but i think there's
>>> more to it than that.
>>>
>>> my harddrives now been dormant for 10mins....  spin down nirvarna has
>>> been reached.
>>>
>>> looks like killing the gnome power meter has stopped the spin ups... now
>>> that's
>>> ironic..  any replacements? or shall i go and hack it.
>>>
>>> i wonder if this would do ssd's good too.
>>>
>>> thoughts?
>>>
>>> Cheers,
>>>
>>> Lee
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>>
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>
>
>
> --
>
>
> Nick Walker
> Vice President : The Linux Society
> UAD Ethical Hacker
>
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