Develop Bugs

Are there any ways to enhance the speed of APP2SD+

Hi all,
Recently, i have changed to Sandisk Mobile Ultra 16gb Class 4. Did a speed test on it with atto benchmark and it is able to read/write with an maximum of 19mb/14mb per second.
However, when app2sd+ is applied, I found that in certain apps or games, there is still an lag with the applications. (This is most obvious in games). If app2sd+ was not apply, such lags are seldom seen.
Thus, I feel that having app2sd+ is a great incentive for large storage but at the price of speed.
Are there any available tweaks out there that is able to improve the speed of app2sd+?
Pardon my poor english.
Thanks.
BR,
Ruffie

Yes, I suppose. I use a Kingston Class 10 microSDHC and I've never had such problems. I can move whatever I want to that card and cannot find any difference. Also, navigating across 300 images is very smooth.
But sadly, Class 10 cards are still very expensive, especially if you want 32 GB.

Would a Class 6 be good enough you think?

There must be something wrong somewhere.
I've had a Class 2 16gb Sandisk card since back when I had a G1.
I've used APPS2SD+ all the time on the G1 and used it for a while on the Desire until I moved on to Cyanogenmod.
All my apps run as tho they were installed on the phone, regardless of what people used to say about different classes.
I have some big games installed like Fifa 10 and Zenonia and get no lag at all.

brummiesteven said:
There must be something wrong somewhere.
I've had a Class 2 16gb Sandisk card since back when I had a G1.
I've used APPS2SD+ all the time on the G1 and used it for a while on the Desire until I moved on to Cyanogenmod.
All my apps run as tho they were installed on the phone, regardless of what people used to say about different classes.
I have some big games installed like Fifa 10 and Zenonia and get no lag at all.
Click to expand...
Click to collapse
i played caligo chaser on my desire.
this game has some obvious lag when i am using app2sd+. but show no lag when i install them on phone.
not sure is it because, it is writing to both fat32 partition of the SD card and ext 3 partition on the same SD card at the same time when it is running thus causing the lag.

Does anyone know at what speed is the phone capable of read/write to the SD card?
Sent from my HTC Desire using XDA App

Worth upgrading from c6 to c10 sd card

Hi,
i have the problem of not enough memory OR a slow system. Currently im using a class6 16gb microsd with default app2sd from the rom (JB spazedog), but the app data fills up the internal memory nonetheless. If i move everything (not just apps) to the sd the system is getting slow and unresponsive.
It is worth getting a faster sd (class 10) and moving everything to sd or do i have no choice but keeping apps to a minimum?
Thx

drdoomgod said:
It is worth getting a faster sd (class 10)?
Click to expand...
Click to collapse
No, but it would probably be worth to change to some rom which is not in beta and fits in /system small enough to have /data big enough to keep dalvik on nand and give more space for apps.

When using 6class and 10class i feel no significant changes in speed of app2sd area.
running speed test, write speed is usually about the same, read gives little higher results.
attachment below 16gb Transcend 10class vs Adata 8 gb 6class

I'm using ICS Spazedog and DiskManager is working fine. Sometimes I have to switch pages when looking at app storage to get it to work. Maybe it didn't install properly, maybe your partitions need to be aligned, maybe the SD card needs to be reformatted. Could be quite a few things doing it.

Nope

Class 6 -> 10
If you use App2SD, definitely no.
If you use Data2SD, it is possible to see some differences.

oxyg3n89 said:
When using 6class and 10class i feel no significant changes in speed of app2sd area.
running speed test, write speed is usually about the same, read gives little higher results.
attachment below 16gb Transcend 10class vs Adata 8 gb 6class
Click to expand...
Click to collapse
In terms of memory, you have to keep in mind that using a2sd means sending the dalvik (if you choose so) ans the app to the sd-ext. While it allows to more internal space, it still decreases.
The sd-ext partition is practically limited to 1024mb by the desire inter storage size too, meaning that going over 1gb of sd-ext size wouldn't be better.
Now like erklat said, it is better to switch to more stable ROM as JB ROMs offer few space and their behavior have not yet been standardized.
Recap: In terms of memory, it is not necessary to change to an upper class, but it is always a nice harmless improvement.
In terms of speed, I have seen that changing to class 10 gives great speed changes in terms of massive gaming:
Due to the higher read speed and also with the read ahead bumped I was able to increase greatly the loading time of such games as Modern Combat 3 and Nova 3. I was surprised since I thought that it was because of the processor mainly that it was so slow. There is an increase in performance when switching to an upper class, but frankly you cannot notice it unless you benchmark the results by testing with a ressource eater app.
To recap: It is worth the change only for the read speed. I'm not sure but I think that write speed is somewhat limited somehow by the hardware. (I'm thinking about windows here, if someone could confirm that please. )
________________________________
Please press thanks if I helped you in any way.
Sent from my HTC Desire using the xda app.

..

I am using class 10 transcend 8gb for spazedog JB rom and class 6 transcend 8gb for cm7 rom. No issues.
Sent from my HTC Desire using xda app-developers app

Class 10 Micro-SD Card ?!!

I'm thinking of buying Kingston 16 GB - Class 10 ,, As it is recommended for ram swapping..
I've tried ram swapping before on my class 4 ,, and it was too SLOW
So I have a question.. Is it really makes any difference from my Kingston 8 GB - Class 4 ?!!
Does it improve performance and multitasking ?! Or will be near to the slowlyyy swappness of my class 4 ?!!

spider2030 said:
I'm thinking of buying Kingston 16 GB - Class 10 ,, As it is recommended for ram swapping..
I've tried ram swapping before on my class 4 ,, and it was too SLOW
So I have a question.. Is it really makes any difference from my Kingston 8 GB - Class 4 ?!!
Does it improve performance and multitasking ?! Or will be near to the slowlyyy swappness of my class 4 ?!!
Click to expand...
Click to collapse
The higher the class of sdcard the faster apps launch, which are installed on them. It doesn't increase your cpu speed or anything, just opens you app's data faster, so it will improve app launch and its performance.
Sent From My Pac Wonder using xda-Developers app

7amada100 said:
The higher the class of sdcard the faster apps launch, which are installed on them. It doesn't increase your cpu speed or anything, just opens you app's data faster, so it will improve app launch and its performance.
Sent From My Pac Wonder using xda-Developers app
Click to expand...
Click to collapse
Thanks.. but you know that our wonder has 1.4 GHz So it is so fast !! ,, while the most problem we got is the RAM.. Only 352 MB For usage.. So i'm asking if i swapped the RAM For 1GB swap file size.. will i feel the difference ?!! OR it will be slower than usual ?!

spider2030 said:
Thanks.. but you know that our wonder has 1.4 GHz So it is so fast !! ,, while the most problem we got is the RAM.. Only 352 MB For usage.. So i'm asking if i swapped the RAM For 1GB swap file size.. will i feel the difference ?!! OR it will be slower than usual ?!
Click to expand...
Click to collapse
I believe it will be better, if you had a class 10 sdcard. But correct me if i'm wrong, isn't the RAM stored in the internal phone memory? Not an sdcard.
Sent From My Pac Wonder using xda-Developers app

I don't mean the ram itself.. Just if i swap ram using any app. (like Swapper2) ,,and that i can set the swap file location to the External SD-Card ,, and set swap size 1GB

sorry i'm not catching up. Yes if you have a class 10 sdcard and swapped it with your internal sdcard, you're going to see a difference between a class 4 sdcard. but how exactly are you going to swap RAM, i saw that app you mentioned(swapper2), but don't know what it does as they don't say in its description. and if you don't know how to swap use my tutorial here: http://forum.xda-developers.com/showthread.php?t=1994688

I think there's a misunderstanding here...
What the OP meant with 'swap' is 'swapfiles', e.g., that feature of all modern OSes that allow apps more than available memory, a.k.a., 'paging file'.
What 7amada100 is talking about is 'swapping' the mount points of the internal and external SD.
Now, with that misunderstanding behind us...
I once tried to create a swapfile on the 2nd partition of my SD card (ext2 format, Transcend Class 10 16GB). It helps. At first. Up to a point.
I found out the hard way that having a swapfile larger than 64MB will gradually slow down your phone to a crawl; unlike Desktop Linux, it seems the Android kernel has no limitations on what parts of the memory it can swap. When it swapped important parts of the ROM into the swapfile... molasses.
-- xda app / Pristine NoMod CM9b3 / CastagnaIT Kernel / DXKL1 baseband / Samsung GT-I8150 --

[Q] galaxy note 2 N7100 compatible memory card?

hello folks,
I recently bought the samsung galaxy note 2. i want to buy a 32 gb memory card for it. so can you pls. suggest me which type of memory cards are compatible with my note 2.

arunsannigeri said:
hello folks,
I recently bought the samsung galaxy note 2. i want to buy a 32 gb memory card for it. so can you pls. suggest me which type of memory cards are compatible with my note 2.
Click to expand...
Click to collapse
This really should go in the Q&A forum, but ... Samsung makes microSD cards. If those aren't "compatible" I wouldn't know what else could be.
Actually just about any class 10 memory card will do.

Yeah pretty much any Microsd will work on the note2. Choose Samsung, SanDisk, Kingston, Adata etc
Sent from my GT-N7100 using xda premium

I recently bought a 64 gb class 10 san disk micro sd card...it says ...they are the fastest...but hey...i am over happy with it...just installed the ex2sdinternal memory script ...it simply swaps your memory...e.g...my internal memory is now 64 gb...and my sd memory is 16 gb ....nice?
Now i can install any big gameloft and ea games without worring about directory bind and there freezes and force closes...
I really advice you to buy a 64 gb...it is cheap..i bought it with a adapter for 55€..it should be 70-75 $ max.
Sent from my GT-N7100 using xda premium

Is class 10 really important ?
Speed class corresponds to the burst write speed, which is important for devices like high end cameras. Since I have a class 4 and have no problem filming in HD, I suppose it isn't a necessity for the Note2.
Maybe more important are the read speed and IOPS (for small files) but I don't know where to find these data.

aloush5592 said:
..just installed the ex2sdinternal memory script ...it simply swaps your memory...e.g...my internal memory is now 64 gb...and my sd memory is 16 gb ....
Click to expand...
Click to collapse
Will you provide me a link for apk download... I can't find it on play store..
Thanks

[Q] Roehsoft Ram Expander (swap)( How to use)

Please guys , who can explain me how to use this apps, and which SD CARD is good to use this ?
Thanks.:good:

sarres said:
Please guys , who can explain me how to use this apps, and which SD CARD is good to use this ?
Thanks.:good:
Click to expand...
Click to collapse
brother let me tell you something for benefit of your sd card
PLEASE PLEASE DO NOT USE SWAP
it kills your sd card
my 16 gb sd ard class 10 died during swapping
so if you have more money to waste and think you can buy one then go for it otherwise not
please thinks twice before swapping and i dont think 1 gb ram of grand is less then why use this
good luck
:laugh::good::good::good:

sarres said:
Please guys , who can explain me how to use this apps, and which SD CARD is good to use this ?
Thanks.:good:
Click to expand...
Click to collapse
That RAM swapper will not work for our grand duos, mainly because we currently do not have a custom kernel (you need a custom kernel has SWAP support) for this application to work.
I can go into detail and explain how it works anyway if you like but the basic thing is, that application will not work on our sgg.
Try their second application - Memory Swap checker, to confirm what I'm telling you - https://play.google.com/store/apps/details?id=com.roehsoft.meminfo
I disagree with @aditya rathee about the dying sd card due to swap, if done right it works like a charm. I have used swap on several of my phones as well as this particular application on my Xperia J. It simply uses the empty space from your sd card to create swap file and uses it as virtual RAM for your applications to run in the background. Usually it is adviced to use Class 6+ SD card for these kind of things, but minimum requirement is Class 4. Personally I have tested it on Class 6 and currently using it on Class 10 SD card.

iceyhotguy said:
That RAM swapper will not work for our grand duos, mainly because we currently do not have a custom kernel (you need a custom kernel has SWAP support) for this application to work.
I can go into detail and explain how it works anyway if you like but the basic thing is, that application will not work on our sgg.
Try their second application - Memory Swap checker, to confirm what I'm telling you - https://play.google.com/store/apps/details?id=com.roehsoft.meminfo
I disagree with @aditya rathee about the dying sd card due to swap, if done right it works like a charm. I have used swap on several of my phones as well as this particular application on my Xperia J. It simply uses the empty space from your sd card to create swap file and uses it as virtual RAM for your applications to run in the background. Usually it is adviced to use Class 6+ SD card for these kind of things, but minimum requirement is Class 4. Personally I have tested it on Class 6 and currently using it on Class 10 SD card.
Click to expand...
Click to collapse
sir it may have worked good for you but my sd ard was sandisk 16 gb class 10 i can send you its photo if you dont believe
also swapping increases reading writing cycles of sd card which results in damage

aditya rathee said:
sir it may have worked good for you but my sd ard was sandisk 16 gb class 10 i can send you its photo if you dont believe
also swapping increases reading writing cycles of sd card which results in damage
Click to expand...
Click to collapse
I'm not disagreeing with you on the fact that swapping decreases the life of the sd card. Yes, sd cards are made in a way that they have only so many read/write cycles, and using them for swap will essentially allow your system and applications to use that swap file/partition over and over again which would decrease the life of your sd card in the long term but NOT right away. You definitely would need to replace your sd card after a year maybe two depending on your usage but that's the cost you have to pay if you need more virtual RAM.
In your previous post you mentioned that your sd card died "during" swapping. That happening is very very unlikely, unless you had really bad luck or you were using an old SD card that had already been used a lot.

iceyhotguy said:
I'm not disagreeing with you on the fact that swapping decreases the life of the sd card. Yes, sd cards are made in a way that they have only so many read/write cycles, and using them for swap will essentially allow your system and applications to use that swap file/partition over and over again which would decrease the life of your sd card in the long term but NOT right away. You definitely would need to replace your sd card after a year maybe two depending on your usage but that's the cost you have to pay if you need more virtual RAM.
In your previous post you mentioned that your sd card died "during" swapping. That happening is very very unlikely, unless you had really bad luck or you were using an old SD card that had already been used a lot.
Click to expand...
Click to collapse
my class 10 sd card was just one year was that not enough

iceyhotguy said:
That RAM swapper will not work for our grand duos, mainly because we currently do not have a custom kernel (you need a custom kernel has SWAP support) for this application to work.
I can go into detail and explain how it works anyway if you like but the basic thing is, that application will not work on our sgg.
Try their second application - Memory Swap checker, to confirm what I'm telling you - https://play.google.com/store/apps/details?id=com.roehsoft.meminfo
I think the stock kernel does support swap becz if you enter
Cat /proc/cpuinfo you will get the following result and it features it says swp
Sent from my GT-I9082 using XDA Premium 4 mobile app
Click to expand...
Click to collapse

Deleted

Thanx a lot !!!
i will not try this on my sgg.
thanx :good::good::good:

Swap supported kernels for Galaxy Grand Duos?
Are there swap supported Kernels or ROMS for galaxy grand duos? If there are any plz give me a Download link.

Kernel with swap support?
Is there any kernel with swap support for grand?

partition sd card
what if I partition the sd card let say i have a 64gb class 10 sd card and partition 60gb as fat32 and the remaing 4gb as fat32 also and use the separated 4gb for Roehsoft Ram Expander so that it will not affect the remaining storage encase the ram expander really kill sd card, would that be possible?

Frost Kernel Supports the swap
nuhad13320 said:
Are there swap supported Kernels or ROMS for galaxy grand duos? If there are any plz give me a Download link.
Click to expand...
Click to collapse
srlkr said:
Is there any kernel with swap support for grand?
Click to expand...
Click to collapse
The only kernel i found which support the Ram Swap is Frost kernel for our grand duos. it also the stable and smooth. I increased my ram to 1500mb by Roehsoft Ram Expander using frost kernel
link for frost kernel-
http://forum.xda-developers.com/galaxy-grand-duos/development/kernel-frost-beta-1-7-t2927449
:laugh: :good:

Hi,
Thank you very much for addressing the kernel for swap in i9082.
I was tired after wasted effort in search of this kind of stuff. This is working in i9082 with RR 5.1.1 lollipop.
Thanks again.

anyone know about ROMs or kernel that support swap for galaxy tab 2?

About SD Card Speed
I know this is a old thread but the user also asked about which SD card to use. I can't tell you which is best but I can give you the information so you can get what fits your needs. I too was confused about the markings on an SD card and did a bit of research. This is what I came up with:
Default bus speed 12.5MB Sec
High speed bus speed 25MB Sec
UHS-I (HC I, XC I) bus speed 50MB Sec
UHS-II (HC II, XC II) bus speed 312MB Sec
UHS-III (HC III, XC III) bus speed 624MB Sec
No speed markings minimum write <2MB Sec (Maybe SD Video)
Class 2 minimum write 2MB Sec (SD Video)
Class 4 minimum write 4MB Sec (SD, HD Video)
Class 6, V6 minimum write 6MB Sec (SD, HD Video)
Class 10, U1, V10 minimum write 10MB Sec (SD, HD, 4K Video)
U3, V30 minimum write 30MB Sec (HD, 4K Video)
V60 minimum write 60MB Sec (4K, 8k Video)
V90 minimum write 90MB Sec (8K Video)
32MB UHS-1, class 10, U1, V10 are approximately $15 (For a swap file nothing slower than this)
32MB UHS-2, U3, V30 are approximately $35 (For a swap file this is better)
32MB UHS-2, U3, V90 are approximately $75 (For a swap file this is best for under $100)