Encrypted vs decrypted - Nexus 9 Q&A, Help & Troubleshooting

So since the tablet has been out I haven't seen any definitive answers on decrypted vs encrypted tablet data. From what I've read, half say it's great, the other half says it won't make a difference. So I'm hoping I can get a thread going on proof that decryption is the way to go. I'd like a list of pros and cons for both types of data if I may..
Heres what I have so far that needs answered.
Decrypted:
1. Faster read/write speeds for memory?
2. Faster read/write speeds for disk storage?
3. Less CPU usage since it's not encrypting data?
4. Less power consumption since the core that does the encryption is no longer in use?
5. Still able to create a lock screen and/or password for your device?
6. Better all around benchmark scores?
7. Better real world performance in apps or browsing the Web?
It'd be nice to get these answered with proof. Maybe screenshots of before/after?
Thanks guys. Hopefully this can be a one stop shop for this answer for other people also.

Philaphlous said:
So since the tablet has been out I haven't seen any definitive answers on decrypted vs encrypted tablet data. From what I've read, half say it's great, the other half says it won't make a difference. So I'm hoping I can get a thread going on proof that decryption is the way to go. I'd like a list of pros and cons for both types of data if I may..
Heres what I have so far that needs answered.
Decrypted:
1. Faster read/write speeds for memory?
2. Faster read/write speeds for disk storage?
3. Less CPU usage since it's not encrypting data?
4. Less power consumption since the core that does the encryption is no longer in use?
5. Still able to create a lock screen and/or password for your device?
6. Better all around benchmark scores?
7. Better real world performance in apps or browsing the Web?
It'd be nice to get these answered with proof. Maybe screenshots of before/after?
Thanks guys. Hopefully this can be a one stop shop for this answer for other people also.
Click to expand...
Click to collapse
Anandtech did a test on the Nexus 5 and Nexus 6 with Lollipop that pretty much sums it up. The result will be different on the Nexus 9 but encrypted has to be slower than decrypted. The question would be how much does the 64bit K1 minimize the penalty.
http://www.anandtech.com/show/8725/encryption-and-storage-performance-in-android-50-lollipop

nrage23 said:
Anandtech did a test on the Nexus 5 and Nexus 6 with Lollipop that pretty much sums it up. The result will be different on the Nexus 9 but encrypted has to be slower than decrypted. The question would be how much does the 64bit K1 minimize the penalty.
http://www.anandtech.com/show/8725/encryption-and-storage-performance-in-android-50-lollipop
Click to expand...
Click to collapse
I've seen that also. However, I'm looking for an apples to apples comparison using the nexus 9. I have yet to find one or any user posting the before/after.

Related

{RANT} Am I the only one thats findings the scrolling not smooth

I've made a thread similar to this before but people assured me it was something i was doing wrong but despite trying everything thats been suggested to me nothing seems to work. ive had this ****ty tablet that i paid £400 for about 3 months now and im sick of it. My galaxy siii is as smooth as i can ask for, its perfect. This tablet however is a different story. the scrolling is truely horrid, i mean its so janky and stuttery and even when it dosent stutter the screen has a sort of deforming effect. I feel like either google really need to spend some time optimising this tablet or the hardware just cannot support this screen resolution. I love android and even back on my older phones with ics and froyo i found their scrolling often smoother than this ****TY TABLET. I've tried about 15 roms, 4 kernels and even tried over-clocking to about 2.0ghz, nothing. made a difference. does anyone know if gooogle is optimising this tablet? because if i see no improvements within the next month im selling this piece of junk. I dont understand how a tablet that can maintain 60 fps on a 3D game can't even manage to scroll a webpage or app drawer page without dropping frames and having janky and stuttery scrolling. I am also very sure this isnt a problem with android. as i said my phone i9300 galaxy siii handles scrolling super smooth on stock and cm10.1 so it can't be an android problem.
My main question is; Does anyone else find this tablets scrolling performance to be stuttery and janky? or do i have a dud?
Another thing i would like to say is that, the animations are perfectly smooth and in terms of app open speed and gaming performance this tablet is great. however i tend to use tablets for mostly web browsing and other 2D applications which is something that this tablet cant handle for some reason. (oh btw i have tried about 5 different browsers and i know chrome is utter **** this isnt chrome that im tlaking about)
My N10 is stock and not rooted, the only application that behaves anything like that is Firefox which can be really bad. No other issues like that at all. If your looking to resolve the problem I'd go back to basics. It's much more likely to be a software issue than anything else.
Sent from my Nexus 10 using XDA Premium HD app
Perhaps checking the Force GPU rendering in the developers options will help remedy the issue you are having with scrolling.
I do not have this issue when scrolling through a website =\ I do have Force GPU rendering enabled as well as Disable HW overlays checked.
before I returned my two through the play store I noticed a horrible amount of scroll "waving" while in portrait. If you have it in portrait and scroll up and down really fast you can see it big time. Even on daily normal scrolling I could see it. It really bothered me. Its too many pixles. I'd rather have uniform scrolling then the last line of pixels be a half second late compared to the first line. It's hard to explain but it is very annoying.
1920 X 1200 is probably the sweet spot right now. Anything over that is overkill and the GPU/CPU cant keep up.
Sorry to disappoint you but if you want a silky smooth performance go check out the iPad.
Android is just not made that way, it cannot be. iOS is always running on a device it is perfectly optimized for whereas Android has to run on no less then 4 different CPU manufacturers, not to even mention the differences within that particular chip set, then GPU, ram and screen. There are thousands of configurations Android has to support. That said, having so much support means you support the lowest and the highest of the bunch, offering a sub par experience on both.
You mention your GS3 often, just recall that the N10 is pushing over twice the resolution on a next-gen chip (read: android isn't optimized for it yet). For every 10 images on a web page loading on your GS3 there are 20 in higher resolution. You can see the issue.
Its no different then the age old battle of Winblows vs OSX. OSX is built for one architecture, one series of chips. Windows has to be run on thousands of configurations. A Windows PC will never be as smooth as a OSX device, even though the OSX device may have lower specs. On a OS level thats what you will always battle against. Windows and Android share the same issue. Also that's why Windows Mobile is so buttery, they only support a small chip set base.
Games are a little different, they can neglect the lower rung of devices and shoot for the Tegra or high end Snapdragons and Exynos. Hence why the N10 is so spectacular on this level.
So to sum it all up, if you want smoothness throughout the OS you need full optimization. Android in its base state cannot offer that and unless Android changes it will never. Samsung optimizes its Touchwiz systems to a large extent and that gives better performance. But in the flip side, the time it takes to optimize it is taken by delaying releases and not being current on the builds of Android.
Sent from my Nexus 10 using Tapatalk HD
altimax98 said:
Sorry to disappoint you but if you want a silky smooth performance go check out the iPad.
Android is just not made that way, it cannot be. iOS is always running on a device it is perfectly optimized for whereas Android has to run on no less then 4 different CPU manufacturers, not to even mention the differences within that particular chip set, then GPU, ram and screen. There are thousands of configurations Android has to support. That said, having so much support means you support the lowest and the highest of the bunch, offering a sub par experience on both.
You mention your GS3 often, just recall that the N10 is pushing over twice the resolution on a next-gen chip (read: android isn't optimized for it yet). For every 10 images on a web page loading on your GS3 there are 20 in higher resolution. You can see the issue.
Its no different then the age old battle of Winblows vs OSX. OSX is built for one architecture, one series of chips. Windows has to be run on thousands of configurations. A Windows PC will never be as smooth as a OSX device, even though the OSX device may have lower specs. On a OS level thats what you will always battle against. Windows and Android share the same issue. Also that's why Windows Mobile is so buttery, they only support a small chip set base.
Games are a little different, they can neglect the lower rung of devices and shoot for the Tegra or high end Snapdragons and Exynos. Hence why the N10 is so spectacular on this level.
So to sum it all up, if you want smoothness throughout the OS you need full optimization. Android in its base state cannot offer that and unless Android changes it will never. Samsung optimizes its Touchwiz systems to a large extent and that gives better performance. But in the flip side, the time it takes to optimize it is taken by delaying releases and not being current on the builds of Android.
Sent from my Nexus 10 using Tapatalk HD
Click to expand...
Click to collapse
Except I have a Galaxy Note 2 which is just as smooth as my iPad 3 was. This is nowhere close to as smooth as either device.
try the eos rom, i think it smooth, stable.... it also keeps running smooth after days of use.
http://forum.xda-developers.com/showthread.php?t=2178128
also in developer options there are 3 things i change on every rom down to. 5:
window animation scale
transition animation scale
animation duration scale
only web pg that doesnt seem to be smooth is 9 gag.
i keep my browser in desktop mode always.
bummer u have a bad taste from it, i find it to be a great hardware, but i like to tweak on it alot.
You are not the only one, check this video, N10 is not as smooth as the ipad or surface, go to min 5.00 http://www.youtube.com/watch?v=cI53tTXcPY8&feature=youtube_gdata_player
stock and boat browser made things much better for me, never use chrome.
NickTheMajin said:
Except I have a Galaxy Note 2 which is just as smooth as my iPad 3 was. This is nowhere close to as smooth as either device.
Click to expand...
Click to collapse
Again, this is an A15 w/2x the pixels to push
Sent from my Nexus 10 using Tapatalk HD
altimax98 said:
snip
Sent from my Nexus 10 using Tapatalk HD
Click to expand...
Click to collapse
That would be an excuse if this tablet wasn't designed by Google. Google was in charge of optimizing. They had to do it.
Sent from my A100 using xda app-developers app
I'm using the Ocean browser and scrolling is very smooth. So, maybe its inefficient apps?
plznote said:
That would be an excuse if this tablet wasn't designed by Google. Google was in charge of optimizing. They had to do it.
Sent from my A100 using xda app-developers app
Click to expand...
Click to collapse
Thaz the thing about software it can always be edited with new optimization and thus improve it. Its still a work in progress. Android always has been
Sent from my Galaxy Nexus
Settings -> developer options -> ( check ) force GPU rendering
Little more batt life drain I think ...
If you want good browsers :
(Smoothest)
Naked browser
AOKP browser
Sent from my Nexus 10 using xda app-developers app
Like every android device out there you just need to tweak the min free values to make it smoother. A good ROM/kernel combo helps too.
Add these lines to an init.d file:
chmod 775 /sys/module/lowmemorykiller/parameters/minfree
chmod 775 /sys/module/lowmemorykiller/parameters/adj
echo "0,1,3,7,11,15" > /sys/module/lowmemorykiller/parameters/adj;
echo "16384,20480,25600,51200,76800,102400" > /sys/module/lowmemorykiller/parameters/minfree;
chmod 644 /sys/module/lowmemorykiller/parameters/adj
chmod 644 /sys/module/lowmemorykiller/parameters/minfree
Where do I find the init.d file?
Sent from my Nexus 10 using xda premium
215alexdx said:
Where do I find the init.d file?
Sent from my Nexus 10 using xda premium
Click to expand...
Click to collapse
System/etc/init.d
Web browsing mostly also, here's...
the steps which have my n10 scrolling smoothly...
1. Start with tablet stock, locked, and setup complete.
2. Unlock and root tablet by preferred method and create nandroid backup. (May require understanding/knowledge of how to get out of bootloop)
3. Go to Play Store and update SuperSu (if required) and install Quick Boot.
4. Install preferred custom Recovery (TWRP is mine)
5. Download preferred custom ROM, gapps ( I prefer a minimum package like Rascarlo's), and kernel. (See mine in signature).
6. Use Quick Boot to boot into recovery, wipe cache, factory reset, then system. I just do...
7. Install ROM, wipe cache and dalvik, install kernel, then gapps. Again, I just do...
8. Reboot system.
9. Set up tablet then go to Play Store and update SuperSu (if needed).
10. Download and install BusyBox.
11. Update, install, and setup required/preferred apps from Play Store (AdAway and Naked Browser required for my tablet!)
12. Go into Settings and clean/disable everything under each setting I don't require or need for my tablet to web browse.
13. Boot into Recovery and "fix permissions".
14. Reboot system, set governor parameters, and enjoy!
This has worked for me without issue, can't/won't guaranty my results for others so use at own risk! :laugh:
My scrolling is good. I'm just on rooted stock 4.2.2. But then again, I may just not be as picky as other people.
Sent from my Nexus 10 using xda app-developers app
No problem here, my Nexus10 is running fast and smooth. CM10.1 no mods, with Dolphin as browser.
Paranoid Android + KToonsez kernel = silky smooth scrolling.
One flick will scroll top to bottom ANY page I have came across and it is VERY smooth.
Try one of the custom roms / kernels for this device and you will change your mind.

[Q] Anyone tried swap on this device?

So has anyone tried swap on this device?
I was thinking that we might be able to increase ram operation if there was a swap partition.
I'm not exactly sure if it will work....
If anyone see's this thread and has a class 10 micro sd card and they want to try it please let me know how it affects the benchmarking results.
(I'd do it, but I have a crappy class 4)
Darin_Ram said:
So has anyone tried swap on this device?
I was thinking that we might be able to increase ram operation if there was a swap partition.
I'm not exactly sure if it will work....
If anyone see's this thread and has a class 10 micro sd card and they want to try it please let me know how it affects the benchmarking results.
(I'd do it, but I have a crappy class 4)
Click to expand...
Click to collapse
I tried using swap for awhile on my old HD2 which only had .5gb, but not here. The question I have to ask is why? In most of the current ROMs developers have already added scripts that kill dormant processes to free up real memory. Even when I've got a dozen apps open I've got plenty of RAM available. What kind of out of memory issues are you experiencing where you think swap would help?
Odysseus1962 said:
I tried using swap for awhile on my old HD2 which only had .5gb, but not here. The question I have to ask is why? In most of the current ROMs developers have already added scripts that kill dormant processes to free up real memory. Even when I've got a dozen apps open I've got plenty of RAM available. What kind of out of memory issues are you experiencing where you think swap would help?
Click to expand...
Click to collapse
Well it's not exactly a out of memory problem. I just wanted to see if the performance would be affected if a linux swap partition for ram would increase or decrease the ram operation.
I know we don't have the most high end device out there, but the specs are supposed to be better than an S2, yet it surpasses ours. It has a slower processor and less 3d graphics than the amaze and still it beats it.
Ram operation on the S2 according to Antutu: 705
Ram operation on the Amaze according to Antutu: 356
That's about half!!!!!
And I'm pretty sure if we found a way to increase the ram operation it'd help with all the other results.
I don't know why this is the case, but probably has more to do with the software running on the devices than the components. Sense is a lot of things most of which are good, but one thing for sure is it's s resource hog.
Odysseus1962 said:
I don't know why this is the case, but probably has more to do with the software running on the devices than the components. Sense is a lot of things most of which are good, but one thing for sure is it's s resource hog.
Click to expand...
Click to collapse
I believe my rom is senseless, cause I'm on the Xperia Z Ultra by shubham211995

Overall speed

Would you say that the Samsung Galaxy Note 9 is "fast" in day-to-day use? A higher rating indicates that you think the Samsung Galaxy Note 9 exhibits fantastic performance. Like, is it as fast as your tears when you watch The Titanic?
Then, drop a comment if you have anything to add!
The 8GB model is blazing fast! Note8 stays far behind.
Amazing
Insane. Way better than my Note8 and that phone was quick!
xMadMike said:
Insane. Way better than my Note8 and that phone was quick!
Click to expand...
Click to collapse
This!
Blazing fast!! No lag in sight. And I'm not even in performance mode, which I always was in with the Note8.
I would say it's significantly faster than any other Android device I've owned. Apps load much faster, network performance is about 4x faster on average than my prior phone, even system updates are faster.
tntoak said:
I would say it's significantly faster than any other Android device I've owned. Apps load much faster, network performance is about 4x faster on average than my prior phone, even system updates are faster.
Click to expand...
Click to collapse
Restart time is insanely fast too!
How is the 6gb vs the 8gb in speed of opening apps, etc? I don't play games
sruel3216 said:
How is the 6gb vs the 8gb in speed of opening apps, etc? I don't play games
Click to expand...
Click to collapse
I have the 8GB model and my partner has the 6GB and we did some testing the other day and there was no real difference. Had 30 apps open as well as Spotify streaming whilst downloading a torrent via uTorrent and neither model showed any signs of lag/delay. I'm starting to think that the 8GB version is a bit over kill, maybe in the future we could utilise it when playing game's or what not.
TLDR, if you looking at buying the Note9 and don't the need the extra storage space just get the 6GB version, can always get an SD card.
6gb is same as 8 gb.... Just get 6gb it is cheaper.
This is great info. Im coming from the S9 and at time this thing is slow.
Was stunned to get 100Mbps deep in a building
Definitely faster than any other android device I've had. Coming from s7 edge. All specs and day to day use so far blows everything else out the water. Just got mines Saturday. 128gb with 6gb of ram
tntoak said:
I would say it's significantly faster than any other Android device I've owned. Apps load much faster, network performance is about 4x faster on average than my prior phone, even system updates are faster.
Click to expand...
Click to collapse
The Galaxy Speed is really huge
I'm a Note 4 & S7 user previously... and I bought Note 9 Exynos 128gb and BAM! I was shocked how fast & quick & smoothie it is... I began to miss the old days when I switch between Apps or multitasking it would lag AF!
Da-BOSS said:
I'm a Note 4 & S7 user previously... and I bought Note 9 Exynos 128gb and BAM! I was shocked how fast & quick & smoothie it is... I began to miss the old days when I switch between Apps or multitasking it would lag AF!
Click to expand...
Click to collapse
So far you haven’t experienced any lag or any little hiccups?
drmodify said:
So far you haven’t experienced any lag or any little hiccups?
Click to expand...
Click to collapse
I can assure you that... not at all
Da-BOSS said:
I can assure you that... not at all
Click to expand...
Click to collapse
Amen!
Just switched from the Note 3, and got the Exynos 6/128, definitely a fast and snappy phone. Very glad I got it

encrypting on new android devices,cause slow performance ?

I wanted to find out if the encrypting on a entirely new android device with 4gb ram or higher will cause significant performance issue. When I was looking similar topics, It seems to me a lot of people has experienced hindrance on the performance. I was reading the article written by Faiz Malkani, it seems to give a clear idea on the impact of Ui experience. However, I would like to know if this is the case with new phones now.

Question Laggy UI and bad real world performance

I recently went from a oneplus 5 to the nord 200 when I switched to t-mobile because of the free promotion. Before I got it I did a little bit of research on the processor and storage speed and didn't expect much of a difference in performance because the snapdragon 480 seems to be fairly powerful and the nord has the same UFS 2.1 storage as my old phone.
I was pretty disappointed to find in my use the phone about 1/2 the time the phone was pretty sluggish in the general user experience and app launch times were significantly longer. May be placebo, but I disabled digital wellbeing, and all the tmobile bloatware and it may have helped a little. I remember reading oneplus heavily throttled some of their phones in recent history. I may switch back to my old phone.
I know the device is relatively new, do you guys think it will get better with software updates or is this just how it is?
I found turning on "Mobile data always active" in the developer options massively improved performance in my apps (at least where online load times and download speeds in-game were concerned)
Did you just get your phone recently? After setting up this phone for the first time, I also noticed the device was extremely slow, with all the app and software updates happening in the background. After all the updates were installed, I turned the phone off for about a day, and performance went to normal. It's not as fast as a flagship and there are minor hiccups here and there, but that's about what I expected from a 400 series SoC.
My original report was the day after I set everything up, I disabled the permissions for the launcher which did improve the responsiveness of the launcher, but application performance and launch times are still slow compared to my old device and not what I would expect from a phone of this spec.
I'm pretty confident this phone is a victim of oneplus' recently reported throttling for battery life. I was curious and compared geekbench scores (which aren't throttled under oneplus' list) and both the nord and my oneplus 5 got fairly similar scores for both cpu and compute. I tried out a browser benchmark motionmark which benches graphics performance. The nord got a 25 and the oneplus 5 got a 189... I ran the test again to make sure but got similar results.
That graphics should be coming from gpu and not cpu though....
I tested cpu and compute on geekbench, compute is a measure of gpu performance. The nord scored a little higher than the 5 in that.
I would assume oneplus' throttling would effect cpu and gpu but even if not, my oneplus 5 scoring almost 8x as high does not seem anywhere near normal
T1Coreon said:
I recently went from a oneplus 5 to the nord 200 when I switched to t-mobile because of the free promotion. Before I got it I did a little bit of research on the processor and storage speed and didn't expect much of a difference in performance because the snapdragon 480 seems to be fairly powerful and the nord has the same UFS 2.1 storage as my old phone.
I was pretty disappointed to find in my use the phone about 1/2 the time the phone was pretty sluggish in the general user experience and app launch times were significantly longer. May be placebo, but I disabled digital wellbeing, and all the tmobile bloatware and it may have helped a little. I remember reading oneplus heavily throttled some of their phones in recent history. I may switch back to my old phone.
I know the device is relatively new, do you guys think it will get better with software updates or is this just how it is?
Click to expand...
Click to collapse
Same experience here, i picked up this phone expecting at least a decent experience but still get bad slow not usable for everyday tasks sometimes.
Im not expecting a flagship performance of course but this is far from decent in my experience.
I hope android 12 will solve many performance issues. Or custom fw
I'm about to throw away this phone into trash. Did not expect so weak dev community activity. The laggy interface is almost unusable if you constantly swap between apps and find them unloaded from RAM. All my text or uploaded content just disappear. It is very frustrating experience. I never had this behaviour with my 2/32 gb xiaomi.
zaooza said:
I'm about to throw away this phone into trash. The laggy interface is almost unusable if you constantly swap between apps and find them unloaded from RAM. All my text or uploaded content just disappear. It is very frustrating experience. I never had this behaviour with my 2/32 gb xiaomi.
Click to expand...
Click to collapse
If you're really at your wit's end, have you considered installing a GSI? I've tried Phh's AOSP w/ gapps, and once you register your device with Google, it works flawlessly (except safetynet/drm) and is a million times faster than stock. Or I'd be more than happy to take your device off your hands.
zaooza said:
Did not expect so weak dev community activity.
Click to expand...
Click to collapse
You know, custom ROMs don't just appear out of thin air. Someone has to take the time to bring up a device and make it stable, and it's not an easy task. I would say to be patient and just accept the fact that there's no guarantee that this device will get custom ROMs.
lzgmc said:
If you're really at your wit's end, have you considered installing a GSI? I've tried Phh's AOSP w/ gapps, and once you register your device with Google, it works flawlessly (except safetynet/drm) and is a million times faster than stock. Or I'd be more than happy to take your device off your hands.
You know, custom ROMs don't just appear out of thin air. Someone has to take the time to bring up a device and make it stable, and it's not an easy task. I would say to be patient and just accept the fact that there's no guarantee that this device will get custom ROMs.
Click to expand...
Click to collapse
Any disadvantages with gsi besides safety net drm? Want to try gsi but this is new to me
Metconnect2000 said:
Any disadvantages with gsi besides safety net drm? Want to try gsi but this is new to me
Click to expand...
Click to collapse
Other than pictures from the camera being degraded compared to stock and having to install apps from the Play Store/changing a few settings in the Settings app, everything seems to work fine

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