JollaMobile : Jolla continues Nokia's excellent work on #MeeGo based smartphones - Page 56 - maemo.org

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	aironeous	2012-07-13 , 17:24
	Posts: 819 \| Thanked: 806 times \| Joined on Jun 2009 @ Oxnard, Ca.	#551

Sometime next year I want to see one of the Jolla staff give a Ted Talk on their incredible journey and success and the power of open source.

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mariusmssj	2012-07-13 , 17:27
Posts: 951 \| Thanked: 2,344 times \| Joined on Jan 2012 @ UK	#552

Originally Posted by Petteri

I think this is really bad desing. You should not force applications to do anything. There should be nice APIs and instructions for that kind of stuff so that developers themselves can make the call when needed and proper quality assurance to see that applications are working as they should. There is no need to cripple our nice Linux OS.

These are points I like.

About the battery saving issue I want to propose more of a hardware solution:

Dual core = 1 proper arm based core 1.5Ghz and slave core low spec.

To deal with background tasks and other simple things have main core turned off and use slave core.

This has been proven to work really well with Tegra 3 chips having 4 main cores and 1 slave(companion core)

more info here

Video here

Last edited by mariusmssj; 2012-07-13 at 17:30.

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TheLongshot	2012-07-13 , 17:37
Posts: 234 \| Thanked: 160 times \| Joined on Oct 2009	#553

Something with my experience with the N900 is that if you want this OS to be functional as the phone, the phone app needs to be able to respond to human input quickly. At times, because something in the background was eating processing cycles, I haven't been able to answer a call because the phone app wasn't coming up and allowing me to respond.

Now, we can talk about how everyone should be well behaved, but the customer doesn't care about that. They care if the device is responsive.

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gerbick	2012-07-13 , 17:47
Guest \| Posts: n/a \| Thanked: 0 times \| Joined on	#554

Originally Posted by qwazix

That is precisely the point of a device like the N900 and that's why we love it. The ability to do things that are not popular.

But if you were a small company, would you put out a device that could only do what a very small percentage of folks that own phones/mobile devices could do?

You're creating a niche within a niche that way. Not saying that the esoteric things such as a torrent file on your mobile is the only thing it can do, but refining the main mobile device usage will invariably take precedence or they (Jolla) will release a rather specialized device that may sell in even less numbers than the N900.

That could spell disaster for a startup.

The rest of the things you're talking about... I get what you're saying. I just wish to discuss my concern over creating a device that only serves a minor portion of what people actually use it for versus trying to hit a larger, sweet spot.

Given that it's made on MeeGo, I'm sure it'll be geeky enough - as long as they don't bring Aegis along - to satisfy the N900 user as long as they can do the torrents + other usages that made it popular within that crowd.

I just have to question that those things might have made it popular here... it didn't make it popular as a device outside of this group.

It's not popular to want to drop cellular functionality altogether when wifi is available but it prolongs my battery life significantly and my usage pattern fits perfectly to it.

Wait. Isn't this just airplane mode?

I have seen all kinds of weird "features" people have implemented on this board that for 99% is a "who would want that" feature.

Quite. But those one-offs are mainly due to the flexible nature of Maemo 5. That flexibility is the key, not the features imho.

And by the way torrents are something I use 5 or 6 times a year on the N900. All those little things that you know you can do on the N900 are the reason I never carry a laptop with me unless I'm pretty sure I'll have to sit on a desk and work for a couple of hours. Everything else I may need to do can be done on the NIT. Having it in my pocket along with two japods makes me feel it's alright to leave the laptop at home.

Okay... cool to hear that. Despite not being a personal need of mine, thank you for sharing how/why you use that. Makes more sense to me.

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mikecomputing	2012-07-13 , 17:48
Posts: 3,464 \| Thanked: 5,107 times \| Joined on Feb 2010 @ Gothenburg in Sweden	#555

Originally Posted by mariusmssj

About the battery saving issue I want to propose more of a hardware solution:

Dual core = 1 proper arm based core 1.5Ghz and slave core low spec.

To deal with background tasks and other simple things have main core turned off and use slave core.

This has been proven to work really well with Tegra 3 chips having 4 main cores and 1 slave(companion core)

more info here

Video here

Its just marketing campaign from Nvidia and proves nothing. Btw. if you really want to use Nvidia chipset we for sure will have more closed drivers also... look on the Linux desktop and NVidia... And as we know Linus says **** NVidia

However I thinks its better for coders to "learn" powersafe our apps instead.

And if we make more apps (and backends) "opensource" we can also help each other to kill those "buggy" apps. Just an example the one that was reported on some blog for some week ago about search/tracker db that did wakeup because battery app did change desktop file on Harmattan. There is probadly more example of similar stuff that can be improved if as much as possible is open sourced.

http://pvanhoof.be/blog/index.php/20...nd-smartsearch

For me its important the OS gives us as much freedom as possible. But that also means: coders have responsibilities powersafe theyr apps and optimize our code. Some examples:

If app is minimized turn of timers or other stuf that is not used. When the app is "inactive"

If using NFC diconnect from NFC bus when minimized (Then the probadly closed nfc backend daemon should fully turn off NFC if no apps is connected to it for xx seconds (this is not the case on N9 but hopefully could be implemented in JollaMobile's (because I take it for granted that JollaMobile's will have NFC

Do not use python or similar for critical apps/daemons etc.

Last edited by mikecomputing; 2012-07-13 at 18:37.

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mariusmssj	2012-07-13 , 18:03
Posts: 951 \| Thanked: 2,344 times \| Joined on Jan 2012 @ UK	#556

Originally Posted by mikecomputing

Its just marketing campaign from Nvidia and proves nothing. Btw. if you really want to use Nvidia chipset we for sure will have more closed drivers also... ATleast this how it looks on the Linux desktop... And as we know Linus says **** NVidia

However I thinks its better to learn "lazy" coders to powersafe theyr apps instead.

And if we make more apps (and backends) "opensource" we can also help each other to kill those failing apps. Just an example the one that was reported on some blog for some week ago about search/tracker db that did wakeup because battery app did change desktop file on Harmattan. There is probadly more example of similar stuff that can be improved if as much as possible is open source.

That's true, from what they say Jolla's MeeGo should be much more open source and if your making a free app might as well provide the source code.

Last edited by mariusmssj; 2012-07-13 at 18:06.

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mikecomputing	2012-07-13 , 18:52
Posts: 3,464 \| Thanked: 5,107 times \| Joined on Feb 2010 @ Gothenburg in Sweden	#557

I hope this is not a repost But didnt se this before but related to Jolla

http://pvanhoof.be/blog/index.php/20...a-should-do-it

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	www.rzr.online.fr	2012-07-13 , 19:05
	Posts: 1,348 \| Thanked: 1,863 times \| Joined on Jan 2009 @ fr/35/rennes	#558

http://nokiainnovation.com/2012/07/n...olla-on-monday

__________________
Current obsession:

https://purl.org/rzr/abandonware

Please help to list all maemo existing apps :

https://github.com/abandonware/aband...ment-578143760

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I am looking for " 4 inch TFT LCD display screen " for Nokia n950 HandSet

http://rzr.online.fr/q/lcd

Also, I need online storage to archive files :

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https://my.pcloud.com/#page=register...e=g8ikZmcfEJy#

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MartinK	2012-07-13 , 19:36
Posts: 1,548 \| Thanked: 7,510 times \| Joined on Apr 2010 @ Czech Republic	#559

Another interesting powersafe concept: Woodchuck

Originally Posted by neal

Woodchuck is a scheduler for the transmission of delay-tolerant data, such as RSS feeds, email and software updates. Woodchuck improves battery use, reduces cellular network use and hides spotty network coverage by scheduling data transfers when conditions are good, e.g., when attached to power and WiFi is available.

Might be interesting to also group the requests, so that the radio is woken just once, the requests are quickly processed so that it can quickly go back to sleep.

Other "powersaving best-practices":
* make the application event driven
* don't use busy waiting unless it is absolutely necessary
* don't redraw the screen if the application window is not visible

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Last edited by MartinK; 2012-07-13 at 19:42.