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 Sony Xperia Z & Xperia ZL offcial thread V7, jelly 4.2 update arrived

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pikachu01
post Jun 9 2013, 09:21 PM

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QUOTE(chikuera @ Jun 9 2013, 09:17 PM)
hey guys. Somehow my gallery is empty, all the songs, photos, videos are gone. I was prompted by a popup message that my phone has a virus and i need to download something for a price, then i decline it. the next day i woke up, all the items in the gallery are gone! help me  rclxub.gif  icon_question.gif  cry.gif  cry.gif  cry.gif
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Let me guess, you installed some "free" apps/games that were meant to be paid for?

This post has been edited by pikachu01: Jun 9 2013, 09:21 PM
pikachu01
post Jun 9 2013, 10:19 PM

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QUOTE(chikuera @ Jun 9 2013, 10:04 PM)
i don't even remember but i can confirm that all the apps i have downloaded is all free, unless there are extra charge with i don't know
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What I meant was, did you download any shady apps from shady websites?
pikachu01
post Jun 21 2013, 05:12 PM

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QUOTE(droidtrix @ Jun 21 2013, 04:16 PM)
No charging at all..
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Try repairing using Sony Update Service?
pikachu01
post Jun 22 2013, 03:12 AM

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One thing about RAM usage, it's not the amount of RAM that is used that causes the slowdowns in the Galaxy series. It's the services that are running i.e. the Air Gestures etc that slows it down considerably.

In Linux, free RAM is generally wasted RAM.
pikachu01
post Jun 22 2013, 04:04 AM

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QUOTE(Andrewtst @ Jun 22 2013, 03:30 AM)
This is only people though as theory.

How you gonna said about Nexus 10 where I own before? Nexus 10 is 2GB RAM and as usual it reserve same amount of RAM as all 2GB RAM device in market but this make the device hang every day.

After that, new release firmware had occupied more around 800MB reserved for GPU usage to prevent the device hang up everyday, but due to this reserved it had generally make the device behave like 1GB RAM device, and the device will badly slowdown once it touch the limit full usage of RAM and it will sometimes till hang up the device.

Nexus 10 is pure android and don't have any air gestures features at all.

So in practical for me, too many RAM extra is do waste but not enough extra of RAM is some sort making the system instability and lag as well.
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There are different devices with different configurations. I can only speak with the example of Galaxy devices. Some devices can slow down for plenty of other reasons, nowithstanding the RAM issue.

If you're using a pretty recent Android OS (4.x++) and the device usable RAM is more than 1GB plus the manufacturer doesn't tweak the RAM management with unwanted stuff, I can safely say that your slowdown is not attributed to free RAM.
pikachu01
post Jun 22 2013, 04:09 AM

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QUOTE(ChuanHong @ Jun 22 2013, 03:35 AM)
right. hmm.. if ur phone consume 90-95% of RAM. then u will feel laggy or some apps will closed by android OS. more extra RAM is just preserved for future use.

example: A phone with left 700mb free RAM, and B phone left 1.4gb free RAM. I believe future proof here is the B phone.
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As mentioned, free RAM does not mean better performance. RAM is only part of the equation. You'd have to define what free RAM also means. Do you mean, dirty memory/caches + unused memory = free RAM? Or just unused memory = free RAM?
pikachu01
post Jun 22 2013, 04:33 AM

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QUOTE(Andrewtst @ Jun 22 2013, 04:26 AM)
S III international v/s LTE practically same device. Why LTE - 2GB run smoothly but not the international - 1GB edition.

RAM forever important, never extra too many means wasted, this apply to Android, iOS, Windows, MacOS and Linux.

More RAM always helping the performance.
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Kernel configurations? Or they messed with RAM management in both of the devices to not favour cache (maintain a few hundred MB of unused memory leading to lower performance).

Which Galaxy S3 LTE do you mean?

This: http://www.gsmarena.com/samsung_galaxy_s_iii_i747-4803.php
Or This: http://www.gsmarena.com/samsung_i9305_galaxy_s_iii-5001.php

This post has been edited by pikachu01: Jun 22 2013, 04:36 AM
pikachu01
post Jun 22 2013, 04:42 AM

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QUOTE(Andrewtst @ Jun 22 2013, 04:39 AM)
Then you just use 512MB RAM device enough as it enough for you since you mindset more RAM is wasted and RAM never help on performance.

Sincered said reply you is just wasting my time.
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Man, I've been compiling kernels and working on the Android RAM management for a few years. smile.gif

I know what I'm talking about.

As I've said, if you're using 1GB+ devices with Android 4.xx+, you should be fine.

512MB (even with full 512MB usable RAM) with an Android 4.x+ isn't cutting it as Android system basically takes ~ 200MB++. Running Angry Birds would consume ~ 60-100MB at different times.

With that, you'd be hard pressed if you have services/launcher/widgets.
pikachu01
post Jun 22 2013, 04:44 AM

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QUOTE(Andrewtst @ Jun 22 2013, 04:39 AM)
Also everyone know S III LTE is i9305. That i747 is different processor for one of the carrier in USA only.
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No, Galaxy S3 LTE can be i747 also. They do sell those here in Malaysia before the Exynos LTE chip was released.

Besides, it was a ~ 2months + delta when the i9305 got released, the SOC is probably a newer stepping that increased its performance.
pikachu01
post Jun 22 2013, 04:48 AM

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QUOTE(Andrewtst @ Jun 22 2013, 04:46 AM)
What the point if you cannot use this or that, what the point keep worried and reduce the widget to remain you so call 1GB RAM is enough. Pure nonsense as it still never show RAM never help in performance.
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That's the thing, if you have 1GB of usable RAM, Android has a mechanism called the LowMemoryKiller to kill off apps/services at stages when your RAM is low.

If Android is only using ~200-300MB of RAM at boot time, you have around 500MB or so memory (excluding dirty memory) to play around with. At the current generation of apps, that should suffice for most day to day usage.
pikachu01
post Jun 22 2013, 04:50 AM

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QUOTE(Andrewtst @ Jun 22 2013, 04:48 AM)
It is not official and never mean to be sold here.

You are truly want to win anything, this you also can argue, this proof your personality.

No point responds you.
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I'm not actually arguing. I only meant to ask which LTE Galaxy S3 you're talking about so that I can make a conclusion based on it (since I've never owned the device myself). If I'm wrong in anything (and I can be), please point out where I am wrong. If not, please reserve your judgment for a better perspective of what I'm talking about.
pikachu01
post Jun 22 2013, 04:54 AM

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Just to give you a perspective, I've been an Android kernel hacker for around 2 years, worked in Android SOC products for a year or so. I definitely know what I'm talking about here. smile.gif

No offense or anything, I just dislike people making sweeping statements about things that are not true.
pikachu01
post Jun 22 2013, 10:44 AM

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I thought the point of contention is that "free RAM constitutes performance"?

And I have pointed out, free RAM does not consitute performance. Even if you have 2GB of RAM, if most of it is left fee, performance should be similar if you have a 1GB Android 4.x++.

More RAM doesn't hurt, but having it free bears no performance improvement.
pikachu01
post Jun 22 2013, 10:51 AM

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QUOTE(Andrewtst @ Jun 22 2013, 10:46 AM)
I always talk to you 1GB vs 2GB. Minimum RAM is impact the performance.

1GB only working ok for ICS but never for JB.
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And as I said, if you're talking 1GB vs 2GB, the bottleneck isn't the amount of RAM. It's the services/processes running in the background (i.e. the bloat that some manufacturers introduce) as well as how they optimize the kernel in temrs of RAM management.
pikachu01
post Jun 22 2013, 10:57 AM

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QUOTE(Andrewtst @ Jun 22 2013, 10:53 AM)
Because got people like you, that why market still flooded with bad performance and impression to first time android user as 1GB Jellybean device only beginning ok, once load with a lot of things where most people do, and not much people know on customize will disappointed with android at the end.

All this get no issue when the device is 2GB or more, not only user love a lot of things, even manufacturer also. Samsung pushing more and more now as it is a selling point, no point if you buy it and later remove all of the features just for let it performing smooth.
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Eh, please don't get emotional on things we discuss in here. We're not pointing fingers on anyone or putting the blame on anyone.

And to make sure you know what I'm talking about, I'm not working on ARM based SOCs. I'm an Intel engineer. Do you see any Intel based phones that have bad performance?

Actually, scratch that. Even iOS laden with apps slows down the phone considerably. There're no amount of hardware in this world that can withstand a lot of running services and bloat. Give it enough time and even the most powerful computing device will cripple under a lot of apps.

This post has been edited by pikachu01: Jun 22 2013, 11:03 AM
pikachu01
post Jun 22 2013, 11:02 AM

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QUOTE(Andrewtst @ Jun 22 2013, 10:56 AM)
If new phone never came with more useful service, no point upgrading also right?

At the end, having more RAM is better and needed.
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There is a point where software surpasses the hardware momentum. As I've said, at this point the current apps that we have now have not surpassed the RAM that we have now.

Also, one point I want to make. Do you know that Android periodically kill off background apps according to the number of background apps that you have and the time it is idle?

You almost never get to fill up the total amount of RAM (even if it's 1GB of usable RAM). You can check the amount of free RAM through /proc/meminfo.
pikachu01
post Jun 22 2013, 11:07 AM

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QUOTE(Andrewtst @ Jun 22 2013, 11:04 AM)
Because you keep show off you are android engineer, and you know much better, you are not means you better if you never stand in customer usage.

Not much Intel base phone, it is too rare and not mainstream now, no one knows how it perform.
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I'm not showing off that I'm an Android engineer (I'm not an Android Engineer btw), I'm a design engineer. I don't know much better and I can be wrong, but the things I've mentioned before this, I know what I'm talking about.

I don't appreciate the mollycoddling that I've been given here, hence why I'm explaining my experience lest you think I'm talking about things I don't understand.

The point I'm giving here is that, RAM is not the only bottleneck if it's (1GB vs 2GB). A lot of things can be the bottleneck. Making sweeping statements about RAM being the bottleneck (for 1GB vs 2GB devices) is wrong.
pikachu01
post Jun 22 2013, 11:17 AM

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QUOTE(Andrewtst @ Jun 22 2013, 11:13 AM)
I know that also not possible any device fill up all the RAM. You also notice the RAM occupied is more base on increasing resolution and it behave different in different bundle RAM.

Without talking technically, obvious higher RAM device perform better and smoother.

Android itself already not that efficiency on RAM control, at least not until recent version 4.2, so for now, extra RAM is benefits.
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I am talking about RAM in terms of usable RAM. Though, if the higher resolution device reserves the RAM for graphics, and your usable RAM is 1GB. I don't think the bottleneck is within the RAM itself. Could be bloat or optimization problems, or worse the apps that the user itself installed.
pikachu01
post Jun 22 2013, 11:21 AM

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QUOTE(Andrewtst @ Jun 22 2013, 11:17 AM)
I also only mention RAM is one part of it. Many others thing do impact as well. smile.gif

But  I still hold my point, extra RAM is benefits and more future proof as things is getting more and more features where more RAM is required.
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Oops, what I mean in 1GB vs 2GB, RAM is not the bottleneck. Sorry for the typo.
pikachu01
post Jun 22 2013, 01:36 PM

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QUOTE(ChuanHong @ Jun 22 2013, 01:32 PM)
Waa above fire in hole from yesterday midnight till this afternoon.. Cheers.

Both are correct.. Just feel got more free ram is better for future. We know android so will auto kill the memory when there is low memory. What for if we buy 2gb ram phone, and not enough free ram to use and android keep auto kill some apps in background for us. This is what I'm actual wish to say in early post..

We didnt mean free ram=better performance. Free ram is better future proof. I don't want my Hp keep closing my apps due to I need to open heavy apps. That's all.. All are right..
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Actually, even without the RAM getting low, Android will periodically kill off background apps/idling background apps. Hence, even if you have 2GBs of memory, your experience won't differ much from the 1GB user experience.

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