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Hi,
I would like to ask with which file system will the phone last the longest?
RFS, EXT4, JFS or maybe something else? And by the way, which kernel to use to convert (if any)?
94kram01 said:
Hi,
I would like to ask with which file system will the phone last the longest?
RFS, EXT4, JFS or maybe something else? And by the way, which kernel to use to convert (if any)?
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+1 Me too interest...
Fugumod is good if u know what you are doing, ext4 seems slightly better than jfs imho in respect of battery life
Sent from gt i9000 insanity 8.5/fugumod
I beg to differ, RFS uses less battery and it has lower overheads. Ext4 is still a far superior fs though
alcurtis93 said:
I beg to differ, RFS uses less battery and it has lower overheads. Ext4 is still a far superior fs though
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Absolute RFS uses less batt
Rfs uses less battery, but to be honest with the improvements that Samsung has made to the filesystem throughput there is a near as makes no difference in performance levels between it and ext4.
Sent from my GT-I9000 using XDA App
ext 4 is best
ext4 is way better in terms of performance so i dont mind sacrificing battery(its negligible when compared to rfs).. hope this answers ur ques..
ext4 is safe journaling and fast this is usage less battery to because write and read on io exception isnt use any confirmation exception like RFS
ext2 better than ext4 but ext2 not stabil as ext4 and possible making corrup data
Sent from my GT-I9000 using Tapatalk
To be honest, none of us actually know what we are talking about.. However, I will say that in recent ROM's, I don't recall getting the occasional EXTREMELY LONG stalls. But that isn't necessarily due to the filesystem, that could be due to other changes. My advice is to stick to RFS simply for convenience. If you convert the filesystem, upgrading ROMS can be a bit more painful.
If there is strong evidence that the filesystem has a huge impact on battery life, evidence should be posted (with different configurations of EXT4). It is plausible though..
So while reading the Moto X review on Anandtech (http://www.anandtech.com/show/7235/moto-x-review/9 ) I read about the F2F2 (which is developed at Samsung) and this fs seems really promising for performance. I was simply wondering whether any dev has seen this, and has decided whether to implement or not implement this fs and if they would like to maybe explain why they chose to do so...
Of course, I understand us to have the emmc brick bug which complicates things (but so does the GNex: http://forum.xda-developers.com/showthread.php?t=2090108 > the third post), while a dev does seem to be trying to implement this fs (http://forum.xda-developers.com/showthread.php?t=2576085).
Again, I am simply interested in the opinion of a dev about implementing this fs...
This are the disadvantages and advantages I could find:
Disadvantages:
Long mount times of the memory
Bricking of a lot of devices when users are trying to install the wrong combination of ext4 and f2fs
Our faulty emmc chips, which already have a possibilty for the brick bug (but again the GNex also seems to have this problem)
Advantages
A possible enormous increase in memory performance http://www.phoronix.com/scan.php?page=article&item=linux_f2fs_benchmarks&num=1, http://www.phoronix.com/scan.php?page=article&item=linux_f2fs_sdhc&num=1 and http://www.phoronix.com/scan.php?page=article&item=linux_f2fs_usb3&num=1
The implementation of f2fs on the S3: http://lkml.indiana.edu/hypermail/linux/kernel/1210.2/00005.html
Anything new on this?
hi everyone
nowadays everyone are talking about F2FS .. i was interested to experience it and see how good it is
here is a good review as you can see, F2FS wins in term of benchmark.. no doubt about that
but how is it in real life?
i made a comparison for myself and want to share it.. i gave my friend's device and flashed Velocity F2FS
i have HellKat (a cm based rom) on my device.. i must say there isn't "ANY" difference in smoothness and speed
of interface.. (scrolling.. opening and closing apps) .. ANY difference..
maybe F2FS is good for those who want higher benchmarks.. but i don't see a noticeable improvement
in real life..
what do you think? do you agree with me?
Dark Fear said:
hi everyone
nowadays everyone are talking about F2FS .. i was interested to experience it and see how good it is
here is a good review as you can see, F2FS wins in term of benchmark.. no doubt about that
but how is it in real life?
i made a comparison for myself and want to share it.. i gave my friend's device and flashed Velocity F2FS
i have HellKat (a cm based rom) on my device.. i must say there isn't "ANY" difference in smoothness and speed
of interface.. (scrolling.. opening and closing apps) .. ANY difference..
maybe F2FS is good for those who want higher benchmarks.. but i don't see a noticeable improvement
in real life..
what do you think? do you agree with me?
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you should use the same base for testing. btw thread going to be deleted?
http://forum.xda-developers.com/showpost.php?p=46847787&postcount=1
Not a very scientific test as the previous poster has pointed out.
However, here's my 2 cents worth.
On the Nexus 4 I haven't bothered with F2FS because I haven't noticed any perceptible slowdowns on stock firmware/franco kernel to begin with.
However, on my 2012 Nexus 7 I was having a lot of lag issues using stock/Faux123. It was painfully slow at times, even just waking the screen. I converted to F2FS (data only, not system), and the problems evaporated. Did I benchmark? Nope, because anecdotal evidence (my own) was all I needed. It was slow before, then it was fast. I had tried multiple other solutions prior to F2FS that didn't work. Many other users on the N7 2012 have also reported the same experience.
The gist is, if it ain't broke, don't fix it. The N4 filesystem isn't really broken. The N7/2012 seems to have a worse flash memory, and needs this type of fix.
I would love to see this implementation on my transformer tf101. The internal emmc is so slow that our mighty developer found a way to use the external micro sd card as internal memory and tablet became more responsive. But I don't think it's the case with our nexus 4
Sent from my Nexus 4 using XDA Premium HD app
I think it should be the other way around. Velocity is so fast on ext4, that f2fs doesn't make a difference. Maybe you should run hell's on f2fs to appreciate a real world difference. My 2ยข...
I want to know when converting to F2FS, is the home and recents lag still there ?
Sent from my Nexus 4 using Tapatalk
urim225 said:
I want to know when converting to F2FS, is the home and recents lag still there ?
Sent from my Nexus 4 using Tapatalk
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if you ask me, there isn't ANY real life speed improvement.. you can use ART.. it sure has improvement..
The previous benchmarking was conducted on a different model phone, it shouldn't be used to decide if the benchmarks on a nexus 4 will improve or not.
Dark Fear said:
hi everyone
nowadays everyone are talking about F2FS .. i was interested to experience it and see how good it is
here is a good review as you can see, F2FS wins in term of benchmark.. no doubt about that
but how is it in real life?
i made a comparison for myself and want to share it.. i gave my friend's device and flashed Velocity F2FS
i have HellKat (a cm based rom) on my device.. i must say there isn't "ANY" difference in smoothness and speed
of interface.. (scrolling.. opening and closing apps) .. ANY difference..
maybe F2FS is good for those who want higher benchmarks.. but i don't see a noticeable improvement
in real life..
what do you think? do you agree with me?
Click to expand...
Click to collapse
What exactly were u expecting to see?? What tests did u perform. Plz understand that f2fs is a better file system that would prevent ur phn from becoming slower due to filesystem probs in other filesystems. U won't 'notice' anything after few hrs of use.
Also, when u say it's for 'increasing' benchmarks, what do u mean? Benchmark shows how it performs.
Sent from my Nexus 4 using Tapatalk
What version does stock image formats /system F2FS or EXT4?
ngr.hd said:
What version does stock image formats /system F2FS or EXT4?
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Stock is extn4,all defaults are extn4.. You need to convert to f2fs manually.
This is very nice post about comparison between them but i really go with EXT4.
This is simply amazing.
What do you guys think? What are the pros and cons to decrypting?
Thanks
Cons - security if you lose your device is lost. For me a pro is not having encryption. I don't like it tampering with my files. Performance
How much performance difference is there between the 2? Also, is there any difference in battery?
FWIW: I just decrypted 5.1 a couple of hours ago. It feels much more responsive. And the boot time is much shorter.
The encryption uses CPU cycles so obviously it will use battery but I very much doubt it would be enough for you to be able to tell a difference
wasn't their a thread talking about there being a separate chip for encryption in the 805?
and although I haven't taken encryption off, I've never seen any weird performance issues considering I have other phones and have used other phones that don't even utilize it to begin with
Thanks everyone. I decided to decrypt
A2CKilla said:
wasn't their a thread talking about there being a separate chip for encryption in the 805?
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There is hardware encryption but we're not using it yet *unless* 5.1 has introduced this. It's been software encryption til now.
A2CKilla said:
and although I haven't taken encryption off, I've never seen any weird performance issues considering I have other phones and have used other phones that don't even utilize it to begin with
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There is definitely a perceivable difference in performance. If you decrypt, it will seem more responsive. Comparing this device performance against another device in a different encryption state will not yield any reliable results.
I'm running encrypted for the first time. I don't notice really any performance difference, other than thumbnails loading in Google Photos.
What will improve and should I do it? I've seen that booting up takes longer but I can live with that, what bothers me is performance in system and I'm not really worried of someone spying on me
Try it, but you probably won't notice a difference. Other than the difference in boot times they felt the same in performance. I tried both ext4 and f2fs and couldn't see a performance difference either. F2fs uses more of the storage so I switched back to ext4 and got an extra 2 or 3 gigs of storage back.
Theoretically yes but practically no. In newer phones such as the OnePlus 3T you won't really notice the difference.
Yes, but you won't notice it. Performance impact of encryption is negligible.
Encryption (at least fde encryption in Android) is about protecting your data when you lost your phone, not about protecting you from spying. Think about it that way, losing your phone is a bad thing but losing your phone AND your all your data (your contacts, chat, sms, mms, photos, call logs, app data, banking data, browser history..) is much worse. Why would you put your data in such a risk? Don't do it, it is not worth it.
Michalko5896 said:
Yes, but you won't notice it. Performance impact of encryption is negligible.
Encryption (at least fde encryption in Android) is about protecting your data when you lost your phone, not about protecting you from spying. Think about it that way, losing your phone is a bad thing but losing your phone AND your all your data (your contacts, chat, sms, mms, photos, call logs, app data, banking data, browser history..) is much worse. Why would you put your data in such a risk? Don't do it, it is not worth it.
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That's it. Also, a lot of developers keep disabling encryption in their ROMs without a reason. Since encryption has become a standard in Android, CPUs have adopted lot of changes to bring the performance impact almost to zero.
954wrecker said:
Try it, but you probably won't notice a difference. Other than the difference in boot times they felt the same in performance. I tried both ext4 and f2fs and couldn't see a performance difference either. F2fs uses more of the storage so I switched back to ext4 and got an extra 2 or 3 gigs of storage back.
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Just look at that link... For f2fs vs ext4
http://forum.xda-developers.com/showthread.php?t=2697069
Edit: if u write a big file on ur phone it need to be encrypted, so it takes more time. So basically decrypt is way faster, but u will not see any difference.
Gesendet von meinem ONEPLUS A3003 mit Tapatalk
I could care less about benchmarks for speed or performance or anything. I trust my instincts and they tell me the difference is not noticable in my daily usage.
954wrecker said:
I could care less about benchmarks for speed or performance or anything. I trust my instincts and they tell me the difference is not noticable in my daily usage.
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The only reason to decrypt that I can think of is to use MultiROM.
Kk. If u test both, f2fs and ext4 u will see a big difference in app opening or switching apps. F2fs is way faster. but that shouldn't be discussed in that thread.
Gesendet von meinem ONEPLUS A3003 mit Tapatalk
I remember reading somewhere that the SD821 has hardware encryption, unlike any earlier chip. Which means the chip is taking care of it, and not the software... eliminating any slowdown of encrypted vs not encrypted.
Can someone confirm?
Yes, indeed I confirm : I made the comparison on Oxygen 3.5.4 and there's absolutely NO difference neither in day to day usage, neither in benchmarks.
The only reason I took the decision to not encrypt is multirom.
eddymonti said:
I remember reading somewhere that the SD821 has hardware encryption, unlike any earlier chip. Which means the chip is taking care of it, and not the software... eliminating any slowdown of encrypted vs not encrypted.
Can someone confirm?
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I'm not sure about a cryptography ASIC in SD821 (at least I've never heard of it), but ARMv8 has a set of instructions made for cryptography and that makes newer Android phones around 10x faster in software encryption.
Ok thanks for the answers guys.. I remember when I had nexus 5 when I encrypted my phone it did slow down so I thought it was the same on this phone
eddymonti said:
I remember reading somewhere that the SD821 has hardware encryption, unlike any earlier chip. Which means the chip is taking care of it, and not the software... eliminating any slowdown of encrypted vs not encrypted.
Can someone confirm?
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yes but it is not used. HW encryption in Snapdragon is much slower than SW encryption.
Tweet about the crypto-engine on 820/821
eddymonti said:
Tweet about the crypto-engine on 820/821
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Maybe, but most devices are still using software encryption.
Anyone actually spent days comparing both setups or are you all simply giving examples based on benchmarks and not real life usage? My posts are based on real life NOT silly benchmarks.
GioBozza said:
I'm not sure about a cryptography ASIC in SD821 (at least I've never heard of it), but ARMv8 has a set of instructions made for cryptography and that makes newer Android phones around 10x faster in software encryption.
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every cpu cycle take battery life-- what about battery life impact ?
oTeMpLo said:
every cpu cycle take battery life-- what about battery life impact ?
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little to none