I havnt seen this talked about, remember it back in the og epic forums though.
This will allow you to change the cache set for read and write on the sdcard.
The first app SD Booster will allow you to make the change, it is set to 128 stock, I have found that 2048 (2mb) or 3072 (3mb) are the best settings.
The next app SD Tools will let you see the speed increase SD Booster has allowed.
Ill also inclue an update.zip if you dont want the SD Booster app, the script is set to 3mb.
Update.zip
SD Booster
SD Tools
ROM Toolbox Pro also has the SD Boost on performance settings. There are the 2048 and 3072 options. Thanks for the test app info
Sent from my SPH-D710 using xda premium
One more size option is available and that is 4096 KB on Rom Toobox.
kobridge said:
One more size option is available and that is 4096 KB on Rom Toobox.
Click to expand...
Click to collapse
But the best is the 20...
Sent from my SPH-D710 using Tapatalk
iSaint said:
But the best is the 20...
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
That's what I applied for my Samsung 32GB Class 10 SDHC.
kobridge said:
That's what I applied for my Samsung 32GB Class 10 SDHC.
Click to expand...
Click to collapse
I need that 64 gig now man porn collection getting too huge ...
Haha jk
Sent from my SPH-D710 using Tapatalk
iSaint said:
I need that 64 gig now man porn collection getting too huge ...
Haha jk
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
Good one! +1
Can't wait for manufacturers to start releasing phones with 2 microSD slots! Would be badass
Sent from my SPH-D710 using xda premium
Brilliant idea!
Or able to attach the usb hub on it!
at 0128kb: write: 18.1 mb/s, read: 7.6 mb/s
at 2048kb: write: 20.1 mb/s, read: 7.7 mb/s
at 3072kb: write: 18.5 mb/s, read: 7.5 mb/s
kingston 16gb class 10
vikramjatt11 said:
at 0128kb: write: 18.1 mb/s, read: 7.6 mb/s
at 2048kb: write: 20.1 mb/s, read: 7.7 mb/s
at 3072kb: write: 18.5 mb/s, read: 7.5 mb/s
kingston 16gb class 10
Click to expand...
Click to collapse
Must be something wrong with my phone. SD Tools tells me ~5 MB/s read and write with class 10 cards. I've tried 2 separate cards and a few different read ahead settings. This has been the same for ICS and GB on stock and repacked (GB) kernels.
Definitely test your speeds after using. Decreased mine for some reason
Sent from my Samsung Galaxy SII using Tapatalk 2 Beta 5
vikramjatt11 said:
at 0128kb: write: 18.1 mb/s, read: 7.6 mb/s
at 2048kb: write: 20.1 mb/s, read: 7.7 mb/s
at 3072kb: write: 18.5 mb/s, read: 7.5 mb/s
kingston 16gb class 10
Click to expand...
Click to collapse
Try to see at 1024kb ...
Just as a side note, class 10 should have a minimum of 10 mb/s of write speed... which you're clearly getting, but the read speed should've been equal or higher !! It doesn't make sense because to write, the card does 2 operations but to read it only performs one operation... so in theory, the card should get twice the speed when reading vs writing !!
Look at the bottom of this page, to see an example ... http://www.frys.com/product/6786695
Type
SD Card
Class:10
High Speed Series
Storage
32GB Capacity
Features
24MB Sequential Read Speed
13MB Sequential Write Speed
My read speeds are always 2.5-3x my write speeds, write is usually 10-12mbps and read is 25-33mbps
Sent from my SPH-D710 using xda premium
My read speed is 80.5 mb usually it's right around there.... why is mine so high?
Sent from my SPH-D710 using xda premium
dtr145r said:
My read speed is 80.5 mb usually it's right around there.... why is mine so high?
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Because you're testing the internal memory, not the external SD. If I pull out my SD card, I get the same read speeds.
Here is my SDcard statistics -
32GB Samsung Class 10
(Speed testing app - Antutu benchmark v2.7.3)
2048kb - write 5.1MB/s Read 43.1 MB/s
128kb - write 5.4 MB/s Read 18.3 MB/s
1024kb - write 5.5MB/s Read >50MB/s
3072kb - write 5.7MB/s Read >50MB/s
4096kb - write 5.6MB/s Read >50MB/s
(SD Tools - is this useless app? I can't believe this result. It seems like it doesn't care the buffer size)
4096kb - write 5.1MB/s Read 7.9 MB/s
3072kb - write 4.8MB/s Read 7.9MB/s
2048kb - write 5.1MB/s Read 8.2 MB/s
1024kb - write 5.0MB/s Read 8.0 MB/s
128kbkb - write 5.1MB/s Read 8.0MB/s
SD Card Tester
1024kb - write 5.54MB/s read 27.89MB/s
2048kb - write 5.67MB/s read 27.74MB/s
3072kb - write 5.43MB/s read 27.7MB/s
4096kb - write 5.49MB/s read 28.48MB/s
128kb - write 5.58MB/s read 29.58MB/s
I'll find out more tools to measure the speed.
- it seems like that's it. I couldn't find any more reliable apps to test SDcard speed.
peryp9 said:
Try to see at 1024kb ...
Just as a side note, class 10 should have a minimum of 10 mb/s of write speed... which you're clearly getting, but the read speed should've been equal or higher !! It doesn't make sense because to write, the card does 2 operations but to read it only performs one operation... so in theory, the card should get twice the speed when reading vs writing !!
Look at the bottom of this page, to see an example ... http://www.frys.com/product/6786695
Type
SD Card
Class:10
High Speed Series
Storage
32GB Capacity
Features
24MB Sequential Read Speed
13MB Sequential Write Speed
Click to expand...
Click to collapse
You are correct. Something has been wrong with my sd card ever since I got it. The speeds it gives are not accurate for a class 10.
Sent from my SPH-D710 using xda premium
Related
Yeah. So obviously other benchmarks for MicroSDHC cards on other phones won't be suitable due to hardware differences. The speed also can't be based on the cards class either, because again there are hardware differences and card manufacture quality differences. So I'm going to start by posting my card and results with SD Card Speed Tester from the market. I thought it would better to test the card on the phone itself, as that's where we will be using the phone the most.
I have not rooted or altered my Evo software in any way, if it matters.
Hardware revision 003.
Sofware 3.29.651.5
My card is a Kingston 4GB Class 4 MicroSDHC Model SDC4/4GB Amazon
SD Card Speed Tester Results 6 Tests(1-3MB Buffer) 2 each buffer size.:
1MB buffer:
Test 1: ------
Write 4MB/s
Read 10MB/s
Test 2: ------
Write 5MB/s
Read 10MB/s
2MB buffer:
Test 1: -----
Write 5MB/s
Read 10MB/s
Test 2: -----
Write 5MB/s
Read 10MB/s
3MB buffer:
Test 1: -----
Write 4MB/s
Read 10MB/s
Test 2:-----
Write 5MB/s
Read 11MB/s
Consistent speeds, but I want faster. Post your card model and results with SD Card Speed Tester app on the Evo 4G.
weehooherod said:
KOMPUTERBAY 16gb Class 6 Card
Write: 7 MB/s consistent
Read: 11 MB/s consistent
Testing with "h2testw" on my computer through a micro sd to sd adapter.
Only $47 with shipping too!
http://www.amazon.com/KOMPUTERBAY-m...dapter/dp/B003O996G8/ref=cm_cr_pr_product_top
Edit: Just tested with the SD Card Speed Test app on my Evo and got 4 MB/s Write and 13 MB/s Read. I don't trust that app though because there are too many factors affecting the results. I ALWAYS get higher scores right after a reboot, on airplane mode, all apps killed, super overclocked. Testing from a computer will give you more accurate results.
Click to expand...
Click to collapse
computer speed might also be a factor.
Try doing this test on difference computers if you can, I can test on 3 computers of varying speeds.
Hey gang,
This was a post from n2locarz that I found interesting and I wanted to post it in this forum
I personally have no education on the subject.
Talk amongst yourselves :fingers-crossed:
n2locarz said:
Hey guys, found this interesting article on slashdot about the "lag" of Android ICS. Looks like it may be a bigger issue than just our Inc2s. Anyway, read it over.
http://news.slashdot.org/story/13/01/12/1332204/the-android-lag-fix-that-really-wasnt
There is one comment I found very interesting. They are talking about faster "class 10" sd cards being better, which may not be the case:
This is a common misconception. The class of the SD card is a rating for sequential write speed, nothing more. It's important for cameras and camcorders - in fact it was developed for camcorders because some memory cards simply couldn't write the video data as quickly as the device was sending it to the card.
For an Android device you're more interested in its 4k random read/write performance. It's basically a computer reading/writing lots of small files, so it'll be most impacted by 4k read/write speeds.
As it turns out, manufacturers can tune a flash card for a certain type of performance. If you tune it for faster sequential speeds, random speeds suffer. Likewise if you tune it for random speed, sequential speeds suffer. The class 10 cards I've benchmarked typically hit 10-20 MB/s on sequential writes, but will bog down to as slow as 0.004 MB/s on random writes (yes, 4 kB/s - it was the card I bought before I learned all this. It took 4 hours to copy 4 GB of sheet music and MP3s to that class 10 card - a blissful 0.28 MB/s). Here are the CrystalDiskMark scores I got for a 32 GB class 4 card I have:
seq: 22.9 MB/s read, 4.3 MB/s write
512k: 22.0 MB/s read, 1.3 MB/s write
4k: 3.3 MB/s read, 1.3 MB/s write
Yikes! Only 4.3 MB/s write speed. Who would ever want that? Well look at the benchmarks for a 16 GB class 10 card I have:
seq: 21.8 MB/s read, 12.0 MB/s write
512k: 21.5 MB/s read, 0.9 MB/s write
4k: 5.7 MB/s read, 0.008 MB/s write (not a typo)
So yeah it's 3x faster at sequential writes. But it's slower at 512k writes, and more than 160x slower at 4k writes. It's definitely a very bad choice for an Android device despite being class 10.
The sweet spot for Android is around class 4 or 6. That gets you good 4k write speeds without punishingly poor sequential write speeds (which are important if you're doing something like copying a movie to the card). That said, not all cards are created equal. The "class 2" Samsung card which came with my phone is hands down the best card I've tested overall. It peaked at 11 MB/s sequential writes (meaning it could've been rated class 10), while 4k random writes were still above 1 MB/s. Sandisk is another company which seems to underrate their cards (and their class 10 cards have better if not stellar 4k random write speeds), which is why they're usually highly recommended for Android devices.
tl;dr - You want a class 4 or 6 card, or a good class 2 card for your Android device. Not a class 10 card.
Click to expand...
Click to collapse
CalvinAMi said:
Hey gang,
This was a post from n2locarz that I found interesting and I wanted to post it in this forum
I personally have no education on the subject.
Talk amongst yourselves :fingers-crossed:
Click to expand...
Click to collapse
I don't have a class 10 and I still got the lag while using CM10. After 5+ times of getting it, wiping, and reflashing back to CM10 I finally gave up and am now back on Venom for the first time since ~1.0.
Week ago i bought a Kingston Class 10 - 16GB ,, Now i'm testing it's Writing/Read Speed using SD Tools and ONLY get
Writing Speed : 8.4 MB/s
Reading Speed : 20.0 MB/s
And i know that the class 10 has a minimum writing speed = 10 MB/s
Class 10 asserts that the card supports 10 MB/s as a minimum non-fragmented sequential write speed.
Source : Wikipedia
Click to expand...
Click to collapse
Try select folder in settings advance path.
Sent from my GT-I8150 using xda premium
I think that 10MB\s is theorical speed...
10 mb/s isn't the minimum , its the average and usually alot of ppl get speeds below it (like 8 or 9) sometimes it hits above 10 but not often (at least with me)
djvmen said:
Try select folder in settings advance path.
Sent from my GT-I8150 using xda premium
Click to expand...
Click to collapse
I've Selected SD Card ,, As I've Swapped Cards
miki2o said:
I think that 10MB\s is theorical speed...
Click to expand...
Click to collapse
But i see some screenshots have more than 14MB/s ,, How can this happen ?!!
mosta_9741 said:
10 mb/s isn't the minimum , its the average and usually alot of ppl get speeds below it (like 8 or 9) sometimes it hits above 10 but not often (at least with me)
Click to expand...
Click to collapse
Yes.. i've tried it a lot ,, and get only 7.4 - 8 - 8.7
Thanks all
mosta_9741 said:
10 mb/s isn't the minimum , its the average and usually alot of ppl get speeds below it (like 8 or 9) sometimes it hits above 10 but not often (at least with me)
Click to expand...
Click to collapse
+1
Before I answer I might point that this is the wrong section to ask a question mate.
SD cards are separated in classes but the class number does not define its minimum speed. Class 4 can hit 5-6MB/s Class 6 can hit up to 10MB/s and Class 10 can hit up to 15MB/s . But that does not mean every time it will be that high. Normal speed varies from 8-12.
And especially when its Micro SD you might to cut it slightly bit more lower. Which means that 8MB/s is extremely reasonable.
Mine is only 7+MB/s.
em.mayb u can try testing it several time.im getting different result from 6-10++mb/s..did u use swapped file for ram?
I have just bought a SanDisk Ultra microSDHC 32GB UHS-1, but I noticed the transfer speed seems to be rather slow. So installed the SD Card Tester tool and run a test. On average, the writing speed is about 8 MB/s and reading speed is about 11.5 MB/s this is no where near the 30 MB/s speed mentioned for a UHS-1 card.
I also have a 2 GB microSD card of unknown brand (made in China) that I got for free when I bought my Blackberry Gemini. Surprisingly the test result is slightly better, writing speed is 9.97 MB/s and reading speed 12.21 MB/s.
I bought the SanDisk microSD card at a major computer store, so I believe the card is genuine.
My question is, is there any speed limitation on Galaxy Note 2 hardware for reading/writing to a microSD card to an extent that buying a class 10 or UHS-1 card is pretty much useless?
have you tried speed testing both on pc ??
devil_slayer said:
have you tried speed testing both on pc ??
Click to expand...
Click to collapse
Not yet, my PC is really old does not have a card reader slot. I will need to get one external card reader.
With a class 10 card I get 15 Mb/s write and 33 Mb/s read.
Sent from my GT-N7100 using xda app-developers app
Hielko said:
With a class 10 card I get 15 Mb/s write and 33 Mb/s read.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
which card brand and model?
what tool did you use to test the speed?
was the card formatted in Android or Windows?
A1 sd bench
dvn2008 said:
which card brand and model?
what tool did you use to test the speed?
was the card formatted in Android or Windows?
Click to expand...
Click to collapse
Try using A1 sd bench, from play store.
I get better better speeds using that with the same cardas you.
Transcend 16 gb.
Tested with the same tool as you used.
Formatted with android as I remember well.
Sent from my GT-N7100 using xda app-developers app
To the Community:
I use one of these puppies:
http://dx.com/p/sd-to-microsd-transflash-card-converter-module-27001#.UvLz3PldWSo
so I'm in the market for a 128gb SD card.
I've searched but cannot find the theoretical maxima for read / write speeds for the GN10.1-2014 and I don't wanna buy too much card for the hardware.
I'm contemplating the Lexar Pro or the SanDisk Extreme Plus.
Any recommendations?
Thanks in advance everybody...
SanDisk has proven to be reliable and fast SD card. At least for the 64GB model.
Sent from my SM-P605 using Tapatalk
whatllitbenext said:
To the Community:
I use one of these puppies:
http://dx.com/p/sd-to-microsd-transflash-card-converter-module-27001#.UvLz3PldWSo
so I'm in the market for a 128gb SD card.
I've searched but cannot find the theoretical maxima for read / write speeds for the GN10.1-2014 and I don't wanna buy too much card for the hardware.
I'm contemplating the Lexar Pro or the SanDisk Extreme Plus.
Any recommendations?
Thanks in advance everybody...
Click to expand...
Click to collapse
Hello whatllitbenext,
here are benchmark results for the internal flash memory. Taken from http://www.notebookcheck.com/Test-Samsung-Galaxy-Note-10-1-2014-Edition-Tablet.105624.0.html
AndroBench 3
Sequential Read 256KB
103.96 MB/s
Sequential Write 256KB
22.35 MB/s
Random Read 4KB
15.97 MB/s
Random Write 4KB
2.09 MB/s
best regards
Getrid …
Getrid said:
Hello whatllitbenext,
here are benchmark results for the internal flash memory. Taken from http://www.notebookcheck.com/Test-Samsung-Galaxy-Note-10-1-2014-Edition-Tablet.105624.0.html
AndroBench 3
Sequential Read 256KB
103.96 MB/s
Sequential Write 256KB
22.35 MB/s
Random Read 4KB
15.97 MB/s
Random Write 4KB
2.09 MB/s
best regards
Getrid …
Click to expand...
Click to collapse
Thanks Getrid.
What about to the external SD card? Is a 90mb/sec. read, 45 mb/sec. write SD card overkill?
whatllitbenext said:
Thanks Getrid.
What about to the external SD card? Is a 90mb/sec. read, 45 mb/sec. write SD card overkill?
Click to expand...
Click to collapse
Depends on how you want to use your tablet. If mainly for (HD) video recording/watching movies a fast card with high sequential r/w stats would be my first choice.
On the other hand, my experience from using my HTC HD2 with multiple OS booting from SD tells me, that sequential r/w speed doesn't matter when dealing with a lot of smaller data sizes, like from apps. In that case decent random r/w stats, (random) access time and also IOPS/sec come largely into effect - that is a class 10 card won't pay off and you should better watch out for a, for example, class 4 or 6 card from Sandisk.
You may also have a look at this very interesting thread:
http://forum.xda-developers.com/showthread.php?t=1947560
Kindest regards
Getrid …