Hello, Optimus Black community!
I've bought my OB a week ago, and updated it to open eu v30b. I've seen that many people has random sd unmount, but haven't found anyone who wrote about usb transfer speed. With GB, transfer speed is ok, minimum 2MB/s, but after update, slowed down to 100-150KB/s MAXIMUM! The phone got a class 4 8gb kingstone sdhc. So my question is: slow usb transfer speed between my pc and my phone is sd related, or it is a kernel/sw bug? Earlier I had a P500, and there the GB update had same bug with transfer speed, and after a kernel change, speed problem was solved.
i think this is software or kernel related.
with GB i had transferrates up to 12MB/s and normaly about 6-9 MB/s depending on Data transfered to device (some big files / many smal files).
with IZS i had only transferrates about 2-3 MB/s
on JB i had the same slow transferrates with configuration as massstorage device. Configured for MTP Transfer the speed is much better, but the transferspeeds are not shown in Windows.
P.S.: my sd-card is a Samsung 32GB Class10
Phones from other brands apparently have also suffered from slower speeds on ICS.
See for instance this thread, where the issue was solved by using a different kernel: http://forum.xda-developers.com/showthread.php?t=1443594
I have this problem... please help
Related
Anyone else experiencing excruciatingly slow USB file copying on Froyo? I've got a Class 6 16GB SD card in my phone and it's copying big files from my Macbook Pro at about 0.5MB/s.
It's driving me up the f***** wall, with a 1.2GB file predicted to take 27 minutes to copy across. Have I done something stupid to either my Mac or the phone? There's never been a problem in the past, but this is the first time I've tried copying with Froyo.
* Tried restarting phone and Macbook
* Turned off USB debugging on phone
Cheers,
Dave.
I've got a class 6 8gb card and transferring files from windows 7 goes at about 500 kb/s to 1mb/s. Extremely annoying.. Running froyo FRF83
Got a class 6 and it's going about 2.2 MB/s, I'd like to see it go faster too.
Hi ,
I have exactly the same issue , everything was fine with 2.1 ...
Need to test with CM6.0 when out maybe ?
No issue here moved 600MB in a few minute
same problem....
No clue why...but it limits speeds o ridiculously slow rates.
Get a card reader. Much faster even when you include the time to take out battery and remove/insert card.
same problem.
TEST using NexusOne with Cyanogen 5.0.8 (eclair 2.1): (stock SD card)
file size : 194 MB
time : 2 minutes 15 seconds (= 135 seconds)
194/135 = 1,44 MB/s
TEST using Nokia N97: (same SD card used before)
file size : 194 MB
time : 1 minute 08 seconds (= 68 seconds)
194/68 = 2,85 MB/s
Any news about this ?
Nexus One transfer speed smells like USB 1.1....
double post, sorry.
xManMythLegend said:
No clue why...but it limits speeds o ridiculously slow rates.
Get a card reader. Much faster even when you include the time to take out battery and remove/insert card.
Click to expand...
Click to collapse
this is inacceptable!!! do i have to turn off the phone each time? is it a joke?
on my old and stupid nokia 5800 the transfer rate was triple or more....
The thing is, it used to be quick.
David Horn said:
The thing is, it used to be quick.
Click to expand...
Click to collapse
what?
can you explain better what you mean?
_PeTiT_ said:
what?
can you explain better what you mean?
Click to expand...
Click to collapse
Uh, before 2.2 it used to transfer files about twice the speed it does now. I thought that seemed pretty obvious from "it used to be quick".
Just done a test using the same MicroSD card.
Hero (1.5): 5MB/s
Nexus One (2.2): 1.5MB/s.
I was syncing music via media monkey and it took AAAAAAGES so I assumed it was just the program. it's possibly due to how ur computer identifies it
anyone with froyo final? was been fixed?
I have had problems with my Touch PRO with the stock rom running SPB Mobile Shell 3.5.3(and earlier versions). 16gb class 6 card. After reformatting the card I can transfer some files to it fairly quickly, but after a while when i try to transfer files to it they will drop to insainly slow speeds like 16kb/sec.
I'm having this problem with the final release (FRF91) on my N1. USB transfer speeds are super slow 1MB/s. I think on Android 2.1, it was at least 5 times faster. When I transfer files now from my computer, it seems to transfer in bunches and then pause for several seconds. I have a 16GB class 6 card. Did anyone figure out a cause/solution to this?
*Bump*
I have the exact same issue with Froyo (FRF91). Before, on 2.1, I got transfer-speeds (write to sd) of 5+ Mb/s on my sandisk 16 gb class2, now it seemes to somehow be "capped" to the class2-speed of ~2 Mb/s (write). Not many post about this "problem" though, are there only a certain amount of phones that has this problem, or maybe every one else is using faster sd-cards, hehe
/Dan
daffyno said:
this is inacceptable!!! do i have to turn off the phone each time? is it a joke?
on my old and stupid nokia 5800 the transfer rate was triple or more....
Click to expand...
Click to collapse
Yeah, it is pretty bad. Transfers over the USB cable are capped at something like 2MB/s or something similar to that I believe though don't quote me on it.
I believe it is the hardware and not a software issue.
when I copy big files, let's say, a file more than 10 mb in size, the average transfer rate is 1.5mb/s
otherwise depends on size of file, if the file is very small, few kb, then the transfer rate is unacceptably slow, 300kb or 400kb/s or even worse.
also I found, if I use SD card reader, the transfer speed can be doubled.
Android version: 2.2 froyo (CM 6.0 mod)
SD Card: Kingston SDHC C2 16G
I made the read/write speed tests in 3 ways.
no1. using the app "SD Card Speed Test" on the phone
no2. connect the phone to PC and turn on the USB storage
no3. Insert the SDcard into the Card reader of my PC
see the results in the images attached.
Huge differences!
I think many N1 users have found this problem. But what I really wanna know is WHY?
That's possibly the only downside of my NExus...when I want to transfer anything to it it takes an age via USB. Nice findings....hopefully somebody with more knowledge than me can answer your question as to why (and answer mine at the same time therefore )
When I first bought the cards I was getting fast write speeds around 6mbs as advertised. However after partioning it with wp7 and android and getting about 1.3mbs much less than before. The card is only a week old and before I call and ask I wonder if it could be do to the partitioning? Its divided between a 5.2gb android fat32 and a 2.3gb unformatted by wp7.
This is via usb btw, or is this a known problem through usb?
I am currently on CheckRom V4, XXLA4 modem, abyss note 3.2 kernel .
now my Internal SD write speed is very slow compare to the others.
in Antutu, it benchmarked 5.3MB/s write speed and 32MB read speed.
I used to have something like 15MB/s write speed on the internal SD, don't know why it slowed down half..
the external sd is fine (Lexar 32GB class 10), 10.7MB write and 21MB read, which is as expected from the spec.
anyone know what happened? anything I can do to get back the internal write speed it supposed to have? Thanks
Bump, someone can help me please ?
Sent from my GT-N7000 using XDA App
sometimes you need to wait more than 6hours for a post to be replied on here have some patience!
what speeds do you get when transferrring files to it? dont always rely on a benchmarking tool for speeds
Richy99 said:
sometimes you need to wait more than 6hours for a post to be replied on here have some patience!
what speeds do you get when transferrring files to it? dont always rely on a benchmarking tool for speeds
Click to expand...
Click to collapse
I am so sorry for the urgency but I kinda worry if my Note's internal SD card degrading or even defective.
I tried copy a 2GB single file from my computer to the Note,
the internal SD write speed reported by Windows is around 7MB/s and the external class 10 SD is around 11MB/s
which is still slow. it used to have 15MB/s + (the internal SD)
Thanks
When you plug it in what does your computer mount the phone as? I.e. Does it assign it a drive letter and call it removable disc or does it mount it as 'phone'.
When i got the phone (so stock rom) it mounted as a drive letter and speeds were good, i then rooted and flashed rocket rom on and then it was mounting it as 'phone' with very slow transfer speeds.
Not sure if this is the case for you but i enabled usb debugging (settings > applications > development > usb debugging) and the speed is back to normal.
Im new to the android scene so not sure if this is even relevant!
have the same problem
Galaxy s3. Since omega v44.x android 4.2.1 my write and read speed are very slow. Gallery and contacts also very slow...
I know it has been asked a lot in the past, but searching didn't provide Milestone specific answer.
So If I buy Class 6 or Class 10, will the milestone be able to utilize the full write speed? I am running Cyanogenmod 7 RC0 (latest). At the moment I have 8GB class 4 Apacer microSD and tbh its a terrible card. All I get is 2.5 mb/s write on large files, but I am getting the same speed when the card is in card reader too so its not phone issue.
Thanks.
Maybe I'm wrong, but what I know is that the card class is the limit. It doesn't mean it will read/write at full speed all the time.
How are you testing your speeds?
Maybe SD Speed Increase help you.
https://play.google.com/store/apps/...t=W251bGwsMSwxLDEsImNvbS5zZGluY3JlYXNlLml0Il0.
I don't know how to test my speeds, but were getting 24mb/s read and 8mb/s write speeds in SD Tools ( https://play.google.com/store/apps/...1bGwsMSwxLDEsImFsZXMudmVsdXNjZWsuc2R0b29scyJd ). I'm using a Samsung 16gb Class2. I think the app is not calculating very well. Don't know.
I am using the SD card as USB mass storage instead of carrying separate thumb drive. I transfer a lot of large 1+ GB files.
I tried SD Speed increase last week and it does make a difference on smaller files, but when copying 2GB files it seems to start fast (like a burst mode), but if timed it takes exactly the same time to write something on the card.
I am going to change my 8GB card for 16GB today anyway I just wondered if class 10 is worth getting or should I get class 6 and save some money. Whatever I buy I will report back and test the speed.
I went ahead and bought Patriot LX 16 GB class 10 microSD. Now I get variable speeds from 3.5 mb/s to 8 mb/s depending on the file sizes. As I read somewhere this is due to fact that the phone is using MTP protocol to act as mass storage device.
Anyway with the old card I was topping only 2.5 mb/s no matter the file size, so it's definitely an upgrade and since class 6 was only 5$ cheaper I saw no reason not to buy the faster one, even if the milestone can't utilize its full capability. In the end its an old phone and I believe there weren't any class 10 cards out in 2009 anyway.
And one more thing, the camcorder isnt lagging anymore when recording videos
EDIT: After booting in recovery and clearing dalvik and cache partition I am getting 9.5 + mb/s, but it does start around 4.5 mb/s and then rises to its full speed. Cheers.
Except for the improvements in video recording, is there anything else that runs smoother for you when using the phone?
maango said:
Except for the improvements in video recording, is there anything else that runs smoother for you when using the phone?
Click to expand...
Click to collapse
I think everytime any app need to access your sd, it will be smoother, like gallery, taking photos, loading maps cached in sd, music apps indexing songs, etc. Accessing apps installed on sd card may be loaded faster too.
extrem0 said:
I think everytime any app need to access your sd, it will be smoother, like gallery, taking photos, loading maps cached in sd, music apps indexing songs, etc. Accessing apps installed on sd card may be loaded faster too.
Click to expand...
Click to collapse
Thats right. Gallery loads faster, applications and games moved to SD start up faster etc. Don't know about maps, but I suppose they cache faster too.
However the main difference is when copying stuff to phone in mass storage mode. Thats why I got a higher class card in first place. While all other stuff related to reading from SD do seem snappier, the difference is not all that great since even Class 2 cards can read with high speed, but when it comes to apps that are writing the difference is obvious.
I'm using a Samsung Essentials 32GB Class 10 Card.
Gave me some troubles at first, something with sector sizes seemed wrong - but after formatting it with this tool https://www.sdcard.org/downloads/formatter_3/ it worked.
Someone in these forums suggested the tools - search for the link to find the recommended settings.
Alright, thx for the answer. For someone not using the phone the same way as you, do you think it would be worth the money to get a faster card?
Sent from my Milestone using XDA
The difference between class 6 and class 10 right now is only few bucks. I don't see why not. You never know, may come in handy.
Here check this out, less then 1$ difference in price.
16GB microSDHC CARD Class 6 - Transcend
16GB microSDHC CARD Class 10 - Transcend
I wouldn't go below class 6 since the camera is lagging when recording videos.
Is it true that if a formatted microSD often will make it slow microSD?
It' unlikely, but possible.
My Samsung Essentials 32GB Class 10 card gave my Milestone hiccups at first (rebooted several times when powering on, rebooted every time I left USB mass storage mode) so I re-formatted it using these instructions: http://forum.xda-developers.com/showpost.php?p=23494134&postcount=7417
Now everything works fine and I still get a little more than 10MB/s when copying movies via USB - so no loss here.