[SFOS][1.1.0.27][OOM] The death of multitasking? - maemo.org

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	BluesLee	2014-12-25 , 09:30
	Posts: 411 \| Thanked: 1,105 times \| Joined on Jan 2010 @ Europe	#1

My thoughts are not yours and I and I do not like anti-features.

It is me, myself and I not you, yourself and you and if you decide to kill me than please kill me softly.

We are the world, we are the sailing children. Please swapon.

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m4r0v3r	2014-12-25 , 09:54
Posts: 1,746 \| Thanked: 1,832 times \| Joined on Dec 2010	#2

i havent experienced it yet. but am sure one day itll happen and ill be disappointed.

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	ste-phan	2014-12-25 , 10:27
	Posts: 1,197 \| Thanked: 2,710 times \| Joined on Jan 2010 @ Hanoi	#3

Been very busy, just using the device as phone, not too heavy as I don't have interesting enough soft on Jolla to demand heavy.multitasking in my ussage pattern but I was already wondering: where did those open windows go.

I did not close them!

If I d want to have an over zealous house maid I d move to Android.

At this point I'd expect a slider for OOM operation behaviour.

Sure stuff is fluent but so is my N900 with more work at hands.

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Makeclick	2014-12-25 , 11:03
Posts: 586 \| Thanked: 471 times \| Joined on Jan 2010 @ Finland	#4

I wonder if Maemo core be the best for multitasking? Hmm.. N900 and N9 has very good multitasking, Jolla.. Ok, but not that good. Other than that, Jolla is the best now

. I still have them all

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llelectronics	2014-12-25 , 11:28
Posts: 426 \| Thanked: 1,812 times \| Joined on Dec 2013	#5

I think the problem with this killer is that it starts killing even if swap is still free. So just a configuration that needs to be changed. Still searching for that config though as I am not sure if its a jolla made killer or the global inbuilt linux kernel oom killer.

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	ste-phan	2014-12-25 , 11:52
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Originally Posted by llelectronics

I think the problem with this killer is that it starts killing even if swap is still free. So just a configuration that needs to be changed. Still searching for that config though as I am not sure if its a jolla made killer or the global inbuilt linux kernel oom killer.

The problem?
OOM has been optimized in update 10.. it's surprising Jolla considers this the fruit of months of hard labour.

It would be great if the config could be tweaked but if it is really so hard to balance it I 'd expect Jolla to share the previous config and the new 'Android one'

Did not test the opt in update, but I suppose it worked still like the old Sailfish release for what concerns OOM?

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	nthn	2014-12-25 , 11:58
	Posts: 764 \| Thanked: 2,889 times \| Joined on Jun 2014	#7

Originally Posted by ste-phan

Did not test the opt in update, but I suppose it worked still like the old Sailfish release for what concerns OOM?

Yes, but in case memory was full, there could be some pretty heavy lags. I'm not sure what I'd rather read complaints about on TJC: lag when doing anything, or closing applications automatically. Hopefully this behaviour can be edited somewhere to allow for a bit more time before applications close themselves.

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	BluesLee	2014-12-25 , 12:10
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Originally Posted by llelectronics

I think the problem with this killer is that it starts killing even if swap is still free.

Code:

cd /media/sdcard/*/swapfile
dd if=/dev/zero of=swapfile bs=1M count=1024
mkswap swapfile
swapon swapfile

With this additional swap i don't have any issues since 24 hours. I will probably add a line to fstab.

Last edited by BluesLee; 2014-12-25 at 12:49.

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llelectronics	2014-12-25 , 12:34
Posts: 426 \| Thanked: 1,812 times \| Joined on Dec 2013	#9

Digged around a little bit and found the config to tweak the OOMKiller behavior.
At least for my workflow it now allows opening up more apps than before before OOMKiller kicks in and kills some.

Made a thread on together jolla open for discussion: https://together.jolla.com/question/...t_ratio-value/

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	nthn	2014-12-25 , 12:37
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Originally Posted by llelectronics

Digged around a little bit and found the config to tweak the OOMKiller behavior.
At least for my workflow it now allows opening up more apps than before before OOMKiller kicks in and kills some.

Made a thread on together jolla open for discussion: https://together.jolla.com/question/...t_ratio-value/

Thanks for this!