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Nexus 9 uses F2FS filesystem by default!

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By edgarf28, Senior Member on 5th November 2014, 04:32 PM
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The Nexus 9 uses the F2FS (flash-friendly) filesystem as default, instead of EXT4! (see attached screenshot)

Also notice the 508 MB Swap partition in the screenshot...
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5th November 2014, 06:40 PM |#2  
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Quote:
Originally Posted by edgarf28

The Nexus 9 uses the F2FS (flash-friendly) filesystem as default, instead of EXT4! (see attached screenshot)

Also notice the 508 MB Swap partition in the screenshot...

Can you do a androbench benchmark please i want to know the storage performance

---------- Post added at 06:03 PM ---------- Previous post was at 05:48 PM ----------

Quote:
Originally Posted by edgarf28

The Nexus 9 uses the F2FS (flash-friendly) filesystem as default, instead of EXT4! (see attached screenshot)

Also notice the 508 MB Swap partition in the screenshot...

What is the swap file used for, is it for the cpu, does it use the ram?

The thing has the fastest set up it should be the most smoothest device ever made.

64 bit tegra k1 with geekbench single core performance of 2000 almost double that snapdragon 801.
Fastest internal storage chip. 15MB random write and 38MB random read.
Android lollipop
F2fs filesystem
2gb ram

---------- Post added at 06:40 PM ---------- Previous post was at 06:03 PM ----------

Quote:
Originally Posted by bushgreen

Can you do a androbench benchmark please i want to know the storage performance

---------- Post added at 06:03 PM ---------- Previous post was at 05:48 PM ----------



What is the swap file used for, is it for the cpu, does it use the ram?

The thing has the fastest set up it should be the most smoothest device ever made.

64 bit tegra k1 with geekbench single core performance of 2000 almost double that snapdragon 801.
Fastest internal storage chip. 15MB random write and 38MB random read.
Android lollipop
F2fs filesystem
2gb ram

.

..
5th November 2014, 07:24 PM |#3  
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Quote:
Originally Posted by bushgreen

Can you do a androbench benchmark please i want to know the storage performance

---------- Post added at 06:03 PM ---------- Previous post was at 05:48 PM ----------



What is the swap file used for, is it for the cpu, does it use the ram?

The thing has the fastest set up it should be the most smoothest device ever made.

64 bit tegra k1 with geekbench single core performance of 2000 almost double that snapdragon 801.
Fastest internal storage chip. 15MB random write and 38MB random read.
Android lollipop
F2fs filesystem
2gb ram

---------- Post added at 06:40 PM ---------- Previous post was at 06:03 PM ----------

.

..

The 508 MB Swap partition do not use any RAM, I think it's just an partition on the internal memory to extent the RAM with 508 MB (so basically you have 1.8 Gb RAM + 508 MB Swap)

And see attached screenshot for the AndroBench results.
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5th November 2014, 07:34 PM |#4  
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it is just plain stupid putting only 2GB ram on a 64Bit device and then helping out with 500MB swap. They could have easily add 3GB ram without any significant costs..

Funny thing is that the nexus 6 has 3GB ram and has a variant with 64GB disk.
5th November 2014, 07:48 PM |#5  
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Looks like f2fs is only used on the encrypted /data partition, /system and /cache still use ext4.

Also, the Nexus 9 actually has zram enabled, which explains the swap "partition". Having 2GB of memory with 0.5GB of zram is an interesting alternative to just using 3GB of memory instead.
5th November 2014, 08:28 PM |#6  
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Quote:
Originally Posted by farmerbb

Looks like f2fs is only used on the encrypted /data partition, /system and /cache still use ext4.

Also, the Nexus 9 actually has zram enabled, which explains the swap "partition". Having 2GB of memory with 0.5GB of zram is an interesting alternative to just using 3GB of memory instead.

no, it is not an interesting alternative, it is a stupid one in every way. the nexus 9 is already quite expensive. 1GB ram just costs a couple of dollars and room is more than enough within. and considering it is 64Bit it will bloat up ram usage anyway, not to forget that this high screen resolution eats up a lot of ram, too.
5th November 2014, 10:15 PM |#7  
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Originally Posted by a user

no, it is not an interesting alternative, it is a stupid one in every way. the nexus 9 is already quite expensive. 1GB ram just costs a couple of dollars and room is more than enough within. and considering it is 64Bit it will bloat up ram usage anyway, not to forget that this high screen resolution eats up a lot of ram, too.

It's stupid until you realize how channeling works. The option to user zram is a very interesting one and it might be a better solution. So far benchmarks of the tablet agree with HTC/Google.

EDIT: also, in a serialized "queue" architecture like the this 64bit K1 with 2 cores, multitasking is not the priority. 2GB + zRam or 3GB should not make much difference.
Google opted for this kind of CPU in the N9 to make it as fast as an ipad air2 on your active task. You don't have multiple windows, you won't do true multitasking in this tablet. This is an ipad alternative, and even these architectural details show it.
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6th November 2014, 01:47 AM |#8  
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Quote:
Originally Posted by FrankBullitt

It's stupid until you realize how channeling works. The option to user zram is a very interesting one and it might be a better solution. So far benchmarks of the tablet agree with HTC/Google.

EDIT: also, in a serialized "queue" architecture like the this 64bit K1 with 2 cores, multitasking is not the priority. 2GB + zRam or 3GB should not make much difference.
Google opted for this kind of CPU in the N9 to make it as fast as an ipad air2 on your active task. You don't have multiple windows, you won't do true multitasking in this tablet. This is an ipad alternative, and even these architectural details show it.

a lot of unrelated stuff in your post. there is no need for zram or swap (regarding the first posts its swap and not compressed ram, but i do not know myself what it is) if you get an extra 1GB of ram. 1 GB of ram is ALWAYS better than zram or swap. zram is a nice option when you cannot extend the memory for various reasons and swap may be used for heigh memory use cases when you have some not too slow alternate memory. n9 internal memory is still damn slow for swapping (if it is indeed a swap faile on disk at all).

but actually there seems to be no good reason to not add an extra GB as we can see the nexus 6 has it, the nexus 9 ha definetly room for it (it is not like pc dram module) and it is damn cheap also.

secondly, i'm not talking about multitasking when i pointed out 64bit, so why the hell are you bringing this in? beside of that on a tablet multitasking it meanwhile not so uncommen. the point is that a 64 bit os has a MUCH larger memory footprint. also such high screen resolutions add a decent amount of memory either. and finally, your argument about benchmarks proving anything related to my comment is unrelated at best. it doesn't prove anything related to my statement.

there is aboluelty no reason to prefere zram or swap over an extra GB of ram, and it seems that there is nothing that would made it difficult for htc to add it. i can only assume that they added this just collect some experience on it and nothing more.

i really don't get it. what's the purpose of your statement? showing of your lack of knowledge or celebrating fanboyship "oh cool, they skipped a 5$ GB ram but gave us zram hurayyyyy".

sounds totally sound to give a smartphone 1GB ram more, same high resoltion on a smaller screen and twice as much disk space


EDIT: but please finally tell us WHAT exactly is so "interessting" adding zram or swap instead of one GB ram? you post has no information except this little claim. one might find this decision interesting of course due to its stupidity but it doesn't look that this is the source of your interest.
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6th November 2014, 01:53 AM |#9  
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Any conjecture or theoretical analysis is ultimately pretty meaningless. Just let the performance speak for itself.
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6th November 2014, 02:11 AM |#10  
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@mkygod hallelujah !! 😁😂
6th November 2014, 06:22 AM |#11  
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Quote:
Originally Posted by a user

a lot of unrelated stuff in your post. there is no need for zram or swap (regarding the first posts its swap and not compressed ram, but i do not know myself what it is) if you get an extra 1GB of ram. 1 GB of ram is ALWAYS better than zram or swap. zram is a nice option when you cannot extend the memory for various reasons and swap may be used for heigh memory use cases when you have some not too slow alternate memory. n9 internal memory is still damn slow for swapping (if it is indeed a swap faile on disk at all).

but actually there seems to be no good reason to not add an extra GB as we can see the nexus 6 has it, the nexus 9 ha definetly room for it (it is not like pc dram module) and it is damn cheap also.

secondly, i'm not talking about multitasking when i pointed out 64bit, so why the hell are you bringing this in? beside of that on a tablet multitasking it meanwhile not so uncommen. the point is that a 64 bit os has a MUCH larger memory footprint. also such high screen resolutions add a decent amount of memory either. and finally, your argument about benchmarks proving anything related to my comment is unrelated at best. it doesn't prove anything related to my statement.

there is aboluelty no reason to prefere zram or swap over an extra GB of ram, and it seems that there is nothing that would made it difficult for htc to add it. i can only assume that they added this just collect some experience on it and nothing more.

i really don't get it. what's the purpose of your statement? showing of your lack of knowledge or celebrating fanboyship "oh cool, they skipped a 5$ GB ram but gave us zram hurayyyyy".

sounds totally sound to give a smartphone 1GB ram more, same high resoltion on a smaller screen and twice as much disk space


EDIT: but please finally tell us WHAT exactly is so "interessting" adding zram or swap instead of one GB ram? you post has no information except this little claim. one might find this decision interesting of course due to its stupidity but it doesn't look that this is the source of your interest.

No...you would understand what he was talking about if you understood what he meant by "architecture". The Tegra K1 chip employed by the N9, aka Project Denver, is the first in order execution CPU since...like, 1990.......This device was never designed to multitask, as the CPU itself was designed to finish tasks in order, and be damn fast at that.
Here, read up on this: http://hothardware.com/News/Nvidias-...a-Rides-Again/
Adding 1GB of RAM is useless, since 64bit really needs 4 & up to shine, it doesn't make a difference whether or not you tack on another GB.....
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