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slender is offline slender
2010-09-16 , 08:09
Posts: 2,829 | Thanked: 1,459 times | Joined on Dec 2009 @ Finland
#41
Oh facepalm
"swapoff/swapon/swapoff via a temporary swapfile"
Thatīs why I could not swapoff. Stupid me!
 
Bingley Joe is offline Bingley Joe
2010-09-16 , 12:56
Posts: 356 | Thanked: 172 times | Joined on Jan 2010 @ Canada
#42
Originally Posted by debernardis View Post
Concerning this issue, I want to implement the small memory-freeing command that Simon describes in his blog post, saying he runs it as a cron job.

Code:
I run a cronjob that drops buffer cache containing pagecache, dentries and inodes, to clear out unused dirty pages (sync; echo 3 > /proc/sys/vm/drop_caches).
This might take some time and resources to run, since there's a sync command which writes down to the flash memory.
Given that we haven't cron by default on our devices, and I don't know how to mess with the alarmd daemon (and I'm not sure I'll ever do), I would then add an icon to run the command and free memory when the user likes to, i.e. when the device isn't going to do critical things like answering a call or shooting a video.

What do you think? Button or alarmd?
I definitely like the idea of a button if I have to choose one, but I can see both being the most useful
 

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P@t is offline P@t
2010-09-16 , 13:27
Posts: 343 | Thanked: 819 times | Joined on Jan 2010 @ Paris, France
#43
Adding my thanks too

But I have noticed that at least some of the parameters do not survive a reboot?! While it seems that it should.
 
kaos_king is offline kaos_king
2010-09-16 , 14:10
Posts: 284 | Thanked: 74 times | Joined on Mar 2010 @ Wigan, UK
#44
This certainly seems to have speeded things up.

Not rebooted as of yet though.
 
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debernardis is offline debernardis
2010-09-16 , 14:15
Posts: 2,142 | Thanked: 2,054 times | Joined on Dec 2006 @ Sicily
#45
Originally Posted by P@t View Post
Adding my thanks too

But I have noticed that at least some of the parameters do not survive a reboot?! While it seems that it should.
Please control that it has installed a /etc/event.d/tuning file
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Ernesto de Bernardis
 
gazza_d is offline gazza_d
2010-09-16 , 14:20
Posts: 961 | Thanked: 565 times | Joined on Jul 2007 @ Tyneside, North East England
#46
Originally Posted by debernardis;817524
Concerning this issue, I want to implement the small memory-freeing command that Simon describes in his blog post, saying he runs it as a cron job.

[code
I run a cronjob that drops buffer cache containing pagecache, dentries and inodes, to clear out unused dirty pages (sync; echo 3 > /proc/sys/vm/drop_caches).[/code]

This might take some time and resources to run, since there's a sync command which writes down to the flash memory.
Given that we haven't cron by default on our devices, and I don't know how to mess with the alarmd daemon (and I'm not sure I'll ever do), I would then add an icon to run the command and free memory when the user likes to, i.e. when the device isn't going to do critical things like answering a call or shooting a video.

What do you think? Button or alarmd?
I'm greedy, and would like to see both! The ability to have a "garbage collector" running automatically would be great.

Would an good idea be to spin this off and merge with the optimizeN900 thread.

There does seem to be a multitude of different threads each offering different parts of the jigsaw which is N900 optimisation.
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Nokia N800 (32gb) since Dec 2007
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Nokia N900 (64gb) since Aug 2010 ______________________________
 
P@t is offline P@t
2010-09-16 , 14:29
Posts: 343 | Thanked: 819 times | Joined on Jan 2010 @ Paris, France
#47
Originally Posted by debernardis View Post
Please control that it has installed a /etc/event.d/tuning file
I have the file 'tuning' and I can read the same values as in your first post.
However when I reboot, I can read for example:
40 for for the parameter dirty_ratio
while it should be 95

If I launch again the DEB, then the parameters turn to be at the correct values.

PS: some weeks ago I had modified the rcS file and did change the parameters of swappiness and page-cluster directly in the file. Could that be related? (I have serious doubt but...)
 

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kaos_king is offline kaos_king
2010-09-16 , 14:40
Posts: 284 | Thanked: 74 times | Joined on Mar 2010 @ Wigan, UK
#48
Originally Posted by P@t View Post
I have the file 'tuning' and I can read the same values as in your first post.
However when I reboot, I can read for example:
40 for for the parameter dirty_ratio
while it should be 95

If I launch again the DEB, then the parameters turn to be at the correct values.

PS: some weeks ago I had modified the rcS file and did change the parameters of swappiness and page-cluster directly in the file. Could that be related? (I have serious doubt but...)
I can confirm this too, and it doesnt seem to matter what method reboot is used it always resets. Ive not tested any other figures than the dirty_ratio one as im at work (and supposed to be doing just that).

I doubt you manually changing the swappiness and page cluster made a difference, as I never have changed them and im getting it. I'd expect everyone would be the same?
 

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debernardis is offline debernardis
2010-09-16 , 14:43
Posts: 2,142 | Thanked: 2,054 times | Joined on Dec 2006 @ Sicily
#49
@P@t: you're right. Both dirty_ratio and dirty_background_ratio don't get saved. I'm going to try to see why
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kaos_king is offline kaos_king
2010-09-16 , 14:48
Posts: 284 | Thanked: 74 times | Joined on Mar 2010 @ Wigan, UK
#50
Originally Posted by debernardis View Post
@P@t: you're right. Both dirty_ratio and dirty_background_ratio don't get saved. I'm going to try to see why
Thanks for packaging it together. Really does seem snappier, and that was before I OC'd it after a reboot. It was so snappy, i thought i HAD OC'd it!

Would be good to get it to survive a reboot
 
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