Database Develop

[Q] what is swap??

ok.. im a noob at this... bt what is SWAP partition??? how does its size effect the performance??

It's a partition on your device that the system use when the RAM is full.

so if its grater in size.... that means its good... right??
and if so.. then y do devs prefer to keep it as 0mb??

Beceause it's easier to maintain it i suppose ^^

Its because there is no need for swap and it can reduce the life of your sd card, according to most ppl
Sent from my HTC Wildfire using XDA App

pyroblazer said:
ok.. im a noob at this... bt what is SWAP partition??? how does its size effect the performance??
Click to expand...
Click to collapse
But remember, swap partition will never be fast like device ram chip.
And if u want to achieve good performance witch swap partition, buy microsd card class 6 (not 4)
good luck

Or use the stock class 2 card
Sent from my GT-P1000 using XDA App

ok... how do i check the class of by card?? coz here in India they dont provide class info along eith the card... also there is nothing written on it.... my card gives me a decent transfer rate of 4-5 mbps while copying to the card...

Class 4, it give me 10mb writing speed
Sent from my HTC Wildfire using XDA App

then i'd say mine is class 2(4-5 mbps while copying pc to sd, where as 9-10 mbps while copying 4m sd to pc)??? any software that could assure me??

interesting I have 8GB sd card class 4 and writing speed is 2mb max... is anything wrong? ****

jocto said:
interesting I have 8GB sd card class 4 and writing speed is 2mb max... is anything wrong? ****
Click to expand...
Click to collapse
Either u have been fooled, or its a problem with ur Pc(coz my class2 card gives me 4MBPS),
or the number of files is too large
Example :- 1 file of 100MB will copy faster than 100 files of 1MB each...
getting my point??

Which class type sd card shud i buy for my OB??

Hi ppl,
I wanna buy a 16GB SD card for my LG OB bt i dont know wich class type like (4,6,10) will be gud for it..
Pls guys hlp me out to buy a bettr sd card for grt performance...
Sent from my LG-P970 using XDA App

euphorcimoron said:
Hi ppl,
I wanna buy a 16GB SD card for my LG OB bt i dont know wich class type like (4,6,10) will be gud for it..
Pls guys hlp me out to buy a bettr sd card for grt performance...
Sent from my LG-P970 using XDA App
Click to expand...
Click to collapse
The bigger the class, the more performance you get, so you would obviously want to purchase class 10 if you can afford it buy the largest class you can get, though I would suggest *at least* 6

But will a high class type make my.device slow in working??
Sent from my LG-P970 using XDA App

And i have also heard dat larger class type eats lots of power...
Is it true??
Sent from my LG-P970 using XDA App

What will you do with your sdcard?
To save music and document, a class 4 is enough. (this is what I use)
If you want to move most of your application to your sdcard get a higher class.
SanDisk make great sdcard if you don't care about money. Kingston is fine. Adata class 10 are great for the price.
Sent from my HTC Panache / CM7 using xda premium.

Ya i need to transfer apps to sd card and to download movies and music....
Sent from my LG-P970 using XDA App

I Have a Samsumg 8Gb Classe 10 and I have a grate improve in the performance in the applications that I have in the sd.
I don't feel any extra consuming in the battery...

masterthor said:
The bigger the class, the more performance you get, so you would obviously want to purchase class 10 if you can afford it buy the largest class you can get, though I would suggest *at least* 6
Click to expand...
Click to collapse
This is not true! The class says something about the min performance, it says nothing about the max performance. It is possible a class 6 beats a class 10 card.
So my advice check some tests, where they compare each sd.
Greetz
Sent from my LG-P970 using Tapatalk

get a class 4.
There's a reason why most of the Windows Phone 7s uses an internal class 2 microsd card.
For writing many files onto an sdcard at the same time (lets say while using an app) it would be faster the lower the class.
But obviously a higher class would let you write a single file faster, but with a class 4 you could easily record HD video on your Optimus Black with no lag at all.
Save the money and get a class 4.

Thanks guys for ur suggestions..
Waitin for mre replies..
Sent from my LG-P970 using XDA App

I'd prefer the 10 if i were you,and I have a 16gb c10 right now
Higher class = no problem till now
I't classy enough though
Sent from my heart into yours

Never heard about higher class card using more power. Unless you keep allot of apps on the sd there shouldn't be issues. The higher the class the shorter will be the response time and higher the read write speed.
As for video keeping in mind that for full HD 6Mbs is enough. Which means that with luck class 4 might be ok. Likely it won't.
I have good results with hd video class 4 on Bada phone, but my OB hiccups with class 6 ( that's still to be confirmed if it is software or hardware issue).
If price is not a issue get the highest possible 10 is about optimal for phone higher than that is overkill.

yeomond said:
There's a reason why most of the Windows Phone 7s uses an internal class 2 microsd card.
For writing many files onto an sdcard at the same time (lets say while using an app) it would be faster the lower the class.
But obviously a higher class would let you write a single file faster, but with a class 4 you could easily record HD video on your Optimus Black with no lag at all.
.
Click to expand...
Click to collapse
U wrote so many stupid things that I cannot respond em all, so I will respond one: the only reason why W7 phones use class 2 is that those cards are cheap as autumn leaves.
"with a class 4 you could easily record HD " compare the bitrate of full HD stream with recording performance of class 4 card !!!!!!!!!!!!
euphorcimoron - take in mind one straightforward experience which can obviuously can be seen when You start Your OB ( but some x%$#@* here are to blind to see that ): multimedia files are scanned each time You boot the phone. More files -more time, faster card- less time.
So: get the card as fast as possible: better video recording, apps installed on SD work faster, faster copying of multimedia files into Your phone by any connection ( USB,WiFi), faster booting and so on.

Is there a limit ad to what the OB can actually utilize? I didn't buy a 10 because the sales guy didn't think the phone would have the read write speeds to need that high of a class?
Sent from my LG-P970 using XDA App

This is interesting, I will probably buy a c10 SD card for my OB soon.

stellar_d said:
Is there a limit ad to what the OB can actually utilize? I didn't buy a 10 because the sales guy didn't think the phone would have the read write speeds to need that high of a class?
Sent from my LG-P970 using XDA App
Click to expand...
Click to collapse
one thing about this, the guy didn't want your money
just for info, i lurked many time in here and found many members asking these :
a. "i flashed CM ROM build # and i can't install my apps, but when i change the sd card, the problem is solved, help ?"
b. "what class ?"
a. "4"
--beep--
a. "i flashed this ROM yesterday and it can't read the files, but when i change the sd card, the problem is solved, help ?"
b. "what class ?"
a. "4/6"
--beep--
i have no problem like this till now with the 10

Haha, btw if you can afford buying class 10, go for it. CM uses ext4 partition afaik, requires class 6 as minimum to work flawlessly
Sent from my LG-P970 using Tapatalk

I use 16Gb class 4 and my videorecording feels like 15fps instead of 30fps. I don't know if it's a storage class issue or not because the same thing happens even if I use lower resolution. Probably a CM7 issue?

BoyBawang2 said:
I use 16Gb class 4 and my videorecording feels like 15fps instead of 30fps. I don't know if it's a storage class issue or not because the same thing happens even if I use lower resolution. Probably a CM7 issue?
Click to expand...
Click to collapse
Depends on the bitrate bro, class 4 theoritically have 4Mbps so if your video recording has high bitrate it will slowdown the performance.
Also afaik CM7 has a bug about HD recording.
Sent from my LG-P970 using Tapatalk

good to know. ill exchange this one
Sent from my LG-P970 using XDA App

Partitioning

Hi all, I have a couple of questions before I get my new sd-card.
1. I got my eyes on the SanDisk Ultra UHS-1 8gb class 10 sdcard with a write speed of 30mb/s(advertised). I was just wondering if there would be a noticeable speed difference (i.e. App loading time) if I partitioned that sdcard, as compared to my current class 4 Kingston sdcard.
2. Also, I've read from many forums that some devices don't see noticeable increase in speed from class 6 onwards... Is that true for our device too? (SGM)
3. Is ext4 partition better or ext3 partition better?
Sent from my GT-S5570 using xda app-developers app

Hi, any help? It's been here for a few days already and I really want to know some details before I get my new SDcard so that I won't be disappointed or regret anything.

tietganFTW said:
Hi all, I have a couple of questions before I get my new sd-card.
1. I got my eyes on the SanDisk Ultra UHS-1 8gb class 10 sdcard with a write speed of 30mb/s(advertised). I was just wondering if there would be a noticeable speed difference (i.e. App loading time) if I partitioned that sdcard, as compared to my current class 4 Kingston sdcard.
2. Also, I've read from many forums that some devices don't see noticeable increase in speed from class 6 onwards... Is that true for our device too? (SGM)
3. Is ext4 partition better or ext3 partition better?
Sent from my GT-S5570 using xda app-developers app
Click to expand...
Click to collapse
1. Well u surely won't get the advertised mb/s, but it will be a reasonably fast speed, as speed depends on your cable too (for trasnfer). I'm not sure, but yes u will notice that apps load faster (im basing this on what michie said in the swapping section of the performance thread, so its probably the same for loading from external partition)
2. Yes probably little difference between a class 6, 8 and 10. Maybe because most devices can't read beyond a certain speed or even if they do, that threshold speed is enough and lies in the range of class 6 upwards.
3. I don't really know, but i would suggest ext 4 as i see it recommended in many app to sd apps. Someone could clarify this.

kirakun said:
1. Well u surely won't get the advertised mb/s, but it will be a reasonably fast speed, as speed depends on your cable too (for trasnfer). I'm not sure, but yes u will notice that apps load faster (im basing this on what michie said in the swapping section of the performance thread, so its probably the same for loading from external partition)
2. Yes probably little difference between a class 6, 8 and 10. Maybe because most devices can't read beyond a certain speed or even if they do, that threshold speed is enough and lies in the range of class 6 upwards.
3. I don't really know, but i would suggest ext 4 as i see it recommended in many app to sd apps. Someone could clarify this.
Click to expand...
Click to collapse
Alright, I don't really care about what michie said (no offence), i just want to know if it really works as michie said (personal experiences). I don't wanna buy a new sdcard, just to realise there's not much difference...

tietganFTW said:
Alright, I don't really care about what michie said (no offence), i just want to know if it really works as michie said (personal experiences). I don't wanna buy a new sdcard, just to realise there's not much difference...
Click to expand...
Click to collapse
I don't guarantee anything though Just hope it does the trick!

Try Sd tools free on playstore to test your sd speed write/read before partition
(I try Speed Write true normal like sd class : 10Mb/s (class 10)
and test again after partition.
(I Test it & The Result Sd speed write reduce to 8Mb/s after partition but sd read Increase, test on my sd class 10)
If you want to boost more speed you can try free app called sd booster on playstore.
Good app to gain more speed.
Give a try...
Sent from my GT-S5570 using xda app-developers app

Jeffrianz said:
Try Sd tools free on playstore to test your sd speed write/read before partition
(I try Speed Write true normal like sd class : 10Mb/s (class 10)
and test again after partition.
(I Test it & The Result Sd speed write reduce to 8Mb/s after partition but sd read Increase, test on my sd class 10)
Click to expand...
Click to collapse
So buying a class10 sdcard does help increase the apploading speed in a2sd?

Maybe yes maybe no? some sd different so you must try in my case. yes the speed reduce.
From 10 to 8Mb/s
but Read Speed Increase from 23Mb/s to 28Mb/s
if I use sd booster and set it on 6Mb. my sd write reduce to 6.8 mb but Read speed increase to 32,1 Mb/s
and I got more speed read to gain more smooth performance to play game and more.
also speed up booting on your phone.
but decrease performace make a file like recording and take a photo.
but speed app is awesome.
Sent from my GT-S5570 using xda app-developers app

Jeffrianz said:
Maybe yes maybe no? some sd different so you must try in my case. yes the speed reduce.
From 10 to 8Mb/s
but Read Speed Increase from 23Mb/s to 28Mb/s
if I use sd booster and set it on 6Mb. my sd write reduce to 6.8 mb but Read speed increase to 32,1 Mb/s
and I got more speed read to gain more smooth performance to play game and more.
also speed up booting on your phone.
but decrease performace make a file like recording and take a photo.
but speed app is awesome.
Sent from my GT-S5570 using xda app-developers app
Click to expand...
Click to collapse
You didn't get my point. I'm talking about app-reading speeds in app2sd in an ext4 partition. As in app-loading time. Would it decrease?

Yes off course Increase If you boost your memory... more speed you have but low write.
I'm use ext4 partition too as my Internal memory with Internal HACK memory and OC.
Take a look.
Iam using sd class 10 transcend 16GB.
and use ext partition as default memory and now all of my app in ext4.
app speed & booting is great after I use sd class 10 then my old sd card sandisk 4GB class 4.
Sent from my GT-S5570 using xda app-developers app

Jeffrianz said:
Yes off course Increase If you boost your memory... more speed you have but low write.
I'm use ext4 partition too as my Internal memory with Internal HACK memory and OC.
Take a look.
Iam using sd class 10 transcend 16GB.
and use ext partition as default memory and now all of my app in ext4.
app speed & booting is great after I use sd class 10 then my old sd card sandisk 4GB class 4.
Sent from my GT-S5570 using xda app-developers app
Click to expand...
Click to collapse
So the app-loading speed does increase huh... Alrighty then I'll consider getting a new one. Thanks much.

[Q]SD card acting up...

For a while no i've noticed my SD card getting slower when i transfer files.It's also picked up by antutu as well.It's a class 6 8gb Transcend.I don't use Swap or anything like that since i don't feel it neccesary for my needs.
Scores in antiutu went from SD read (110ish) to 30ish.Its performance has come down to that of a class 2.
Should i format it?What method should i use?
Any other suggestions?

Antimony said:
For a while no i've noticed my SD card getting slower when i transfer files.It's also picked up by antutu as well.It's a class 6 8gb Transcend.I don't use Swap or anything like that since i don't feel it neccesary for my needs.
Scores in antiutu went from SD read (110ish) to 30ish.Its performance has come down to that of a class 2.
Should i format it?What method should i use?
Any other suggestions?
Click to expand...
Click to collapse
dont take antutu's score very seriously because they are just BENCHMARK they are just tool to know the average performance . performance still depends on how you use it. but you can try reflash rom/ wipe sd using pc or reinstall antutu

Yes, format it.
Sent from my X8 using xda premium

Go to cyanogenmod settings->performance->scroll down till you see as card cache size.
Set it to 2048 and then reboot.
The read and write speed of your sd card must increase..
sent from my phone using hands and brain...

I don't take antutu seriously,especially since i get about hte same scores with both top GInger Bread ROMs.But there's a huge difference in performance.
Obviously i should format it but which way is better?Through PC or the phone itself?
PS:FFFFFF i have to find 8gb of free memory D:

Memory speed - really so slow?

Hi,
please check you memory speed using AndroBench. The most important is Random Write. At my 4xHD I get only 0,21MB/s (just after trim using LagFix). It is terribly slow! Eg. Galaxy S3 has 3x faster memories. Does LG really put so slow memories into fast phone? It's hard to belive that.
Bye,
sxill

sxill said:
Hi,
please check you memory speed using AndroBench. The most important is Random Write. At my 4xHD I get only 0,21MB/s (just after trim using LagFix). It is terribly slow! Eg. Galaxy S3 has 3x faster memories. Does LG really put so slow memories into fast phone? It's hard to belive that.
Bye,
sxill
Click to expand...
Click to collapse
I get 1014 internal storage speed on 4.4.2 kitkat cm11.It's more than enough while my class 10 sd card have a score of 630.Something is wrong with your device clear some space up and don't use trimming etc. they are for bad chips such as ones in samsung devices.Never felt slowness due to trimming stuff.Also use SIO it's the fastest for our device and I recommend you to change readahead cache to 1 or 4 mb (4 mb more stable) (tested using diff apps)

ottomanhero said:
I get 1014 internal storage speed on 4.4.2 kitkat cm11.It's more than enough while my class 10 sd card have a score of 630.Something is wrong with your device clear some space up and don't use trimming etc. they are for bad chips such as ones in samsung devices.Never felt slowness due to trimming stuff.Also use SIO it's the fastest for our device and I recommend you to change readahead cache to 1 or 4 mb (4 mb more stable) (tested using diff apps)
Click to expand...
Click to collapse
I don't know what you are talking about or what magic cm11 did, but it is a fact that LG used a painfully slow internal sdcard on 4x.
Sent from my Optimus 4X HD using XDA Premium 4 mobile app

[email protected] said:
I don't know what you are talking about or what magic cm11 did, but it is a fact that LG used a painfully slow internal sdcard on 4x.
Sent from my Optimus 4X HD using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Well I've seen slower internal sd cards.But CM11 does improve I/O speeds.I get the worst IO in 4.1.2 and 4.3.2. 4.2.2 is fine too but 4.4.2 have the best speeds.Maybe it's slow but it is enough.Don't tell me about lags in asphalt etc.They are poorly optimized gameloft games so it's their fault.