Develop Bugs

Very slow USB transfer after root

Before root with original Eiclar 2.1 and Kingston 16GB Class 10 transfer write at 9+mb/sec.
After root with Modaco R6 riskfree only max 2mb/sec. ROM Pays BS 2.3 - FAT+ext4
Now tested AuraxTSense 7.4 Official HTC 2.2 , identical result.
Tested with FAT+ext and only FAT, identical result.
Exist any solution this issue after root?

Strange... with my 4gb class 4 (3gb fat32 + 1gb ext3) I get 9 mb/s with windows 7... firmware 2.2 same your kernel...
Sent from my HTC Desire using XDA App

I'm on MoDaCa R8 and I have a very slow write-performance (up to hangs) on my desire using the USB connection (using Apps2SD+). I copy 70 MB first with 4 MB/s (Class 6 Card). Then it suddenly drops to below 1 MB/s, hangs and may even stop copying anything. Now the windows explorer may hang. Nothing happens for minutes (up to 15 minutes).
Maybe it's because of the custom SD-Card IO-Handler of MoDaCo which speeds up reads. I have no idea.
Anyway, when I take out the SD-Card and put it into my PC, it works perfectly and pretty fast

System of a pWne!^ said:
I'm on MoDaCa R8 and I have a very slow write-performance (up to hangs) on my desire using the USB connection (using Apps2SD+). I copy 70 MB first with 4 MB/s (Class 6 Card). Then it suddenly drops to below 1 MB/s, hangs and may even stop copying anything. Now the windows explorer may hang. Nothing happens for minutes (up to 15 minutes).
Maybe it's because of the custom SD-Card IO-Handler of MoDaCo which speeds up reads. I have no idea.
Anyway, when I take out the SD-Card and put it into my PC, it works perfectly and pretty fast
Click to expand...
Click to collapse
Yes, transfer in PC perfect.
Its issue independent version ROM. Before root ok, after very slow write to sd card < 2mb/s.
independent partition card.
Only FAT32 partition < 2mb/s, FAT32 + ext4 < 2mb/s
Why?
wrong hack via root? I use R6 riskfreeroot, loader 0.80

[Q] USB Data transfer rate is too slow in my desire...help plz..!!

After rooting,, my Desire's usb data transfer rate has drastically reduced...
currently i'm running Open Desire 4.0 froyo rom,
i have tried many ROMs but the data transfer dint improve ,
i'm getting 1.5 to 2Mbps depending on the Size of the file,
i'm using class2 Transcend 8gb sd card....
so can somebody tell whats wrong with my cellphone..???

harish.awe said:
After rooting,, my Desire's usb data transfer rate has drastically reduced...
currently i'm running Open Desire 4.0 froyo rom,
i have tried many ROMs but the data transfer dint improve ,
i'm getting 1.5 to 2Mbps depending on the Size of the file,
i'm using class2 Transcend 8gb sd card....
so can somebody tell whats wrong with my cellphone..???
Click to expand...
Click to collapse
because have you ROOT

Class 2 microsd write speed is 2mbps. Seems your transfer rates are fine. Try a class 4 or 6 card and see what you get.

killawatts said:
Class 2 microsd write speed is 2mbps. Seems your transfer rates are fine. Try a class 4 or 6 card and see what you get.
Click to expand...
Click to collapse
No, if you have rooted phone, after root slow usb
I have Class 10 and slow. Before root OK, after slow.
Indepedence sdcard, fat32 or fat+ext ... slow

Absolutely,, before rooting i was gtting 5mbps transfer rate with the same sd card.....
But i dont understand what does rooting to do with data transfer rate,,,,???

harish.awe said:
Absolutely,, before rooting i was gtting 5mbps transfer rate with the same sd card.....
But i dont understand what does rooting to do with data transfer rate,,,,???
Click to expand...
Click to collapse
It's probably the EXT partition...
I have the same problem.

I dont have a SD EXT partition and its really SLOW! 500KB/S! Please helpp! Got alot of stuff copying back to sdcard

Can be a kernel problem as well. Try to search on the forum, I recall a thread where was a solution to this.

Transcend class 2 surely goes over 2 MB/s writing speed, i would also say it's something that has to do with the microSD partitions,maybe formatting and repartitioning would help

AlSopranos said:
I dont have a SD EXT partition and its really SLOW! 500KB/S! Please helpp! Got alot of stuff copying back to sdcard
Click to expand...
Click to collapse
are you confusing the write speed and the read speed?? when you copy something from your sd card to somewhere else. that is the read speed! you will get about 5mb/s on any class of sd card... when you copy somthing to a sd card, thats the write speed, and there is no way you will ever get more than 2mb/s with a class 2 card, end off! full stop

Pretty sure class determines the minimum, not the maximum, write speed.

I'm also quite pi**ed off with the copy speed.
On stock rom it was definetely fast and now absolutely slow.
Are you serious it is because of root?
Well, i prefer root more than faster writing speed - but i would really love to know the reason for!

What ROM do you have now? Flash a kernel with the SD fix, and you'll get back some speed, but not the maximum (if your card is partitioned).

I'm using Amethyst RC 7 (2.3.2), using A2SD+.
i think for GB is no kernel fix available? But to be serious, i've never thought about another kernel as the one which is included in the rom.
Any help is appreciated

so, i got the hint to use multi-móunt sd card which works really fine. I get again about 2mb/sec which is absolutely ok..

Actually, yes this is Kernel related.
Sadly the latest Kernel .37 is affected.
But Luckily there is a fix.
Look here
http://forum.xda-developers.com/showpost.php?p=11187612&postcount=808

lol strange but i was getting around 1-1.3mb on my class-2 8GB card,now after rooting,i am getting 3-4mbps.
also on other card which was 2gb(donno about its class)i used to get 3-4mbps write speed & now after rooting i get 10mbps.
P.S. i have custom rom installed

I had the same prob...
Solved it by ,completely formating my SDCard (dont forget to mount the partitions in Recovery) and after flashing a new rom,i flashed Cutts kernel and all works fine now again

I used to have approximately 5.0MB/s writing speed before rooting my HTC Desire. Since then, the speed dropped to 150~500KB/s. I tested with OpenDesire, PAYS-MIUI, MIUI, CM6/7 and they all give me the same slow speed. I read in one of the forum that Kernel 2.6.35.x solves the speed problem but I have not tried it. Anyway, a satisfactory work around for me is to use FTP file transfer from File Expert. The downside is, you'll need a stable WIFI connection to transfer large files.
Cheers

[Q] Could my video recording be laggy becouse of my SD card?

Hy, i have a routed desire running auras 7.6.1 (i think, anyway the latest of his roms) and a kingston class 6 microsd. I have testet the sd on my laptop right after i got it and it could sustain a rate of 7mb/s write and around 10 to read. Now i formated it twice, reinstaled rom and record at 800x600 even if i choose mp4 or h.264 i get an anoying 1 sec frreeze at each 20-30 sec of recording...i mean recording never stops....i can see that freeze only at playback. I tought its the player so i have copyed the movie to pc and i still get the same freeze on pc too, so im thinking its a writing problem on sd card or something...
Ps if i plug my phone to pc and use it as mass storage device and upload a file to phone i only get a sustained speed of 1,5-2mb/s is that ok or is it rly somthing wrong with my card as i suspect...
Excuse my poor english and typing mistakes i send it from my desire thanks.

There seems to be a problem with SD card speeds in Froyo / Sense ROMs. You could try a non-Sense ROM, e.g. CyanogenMod 6, Defrost or OpenDesire - I had similar problems to you and got around them by switching to CM6. If you decide to try another ROM it might be worth using the "SD Card Speed Test" app from Market to benchmark before and after you change ROM.
Let me know how you get on...

Hy, i have tested the sd card with that aplication, i get 2mb write and 4mb read. I have instaled cyanogen and another rom without sense, speed went from 2mb write to 3mb write and that was all...i have tryed it without an ext3 partition also and speed was the same... so i went back to sense rom... since the speed improvement its not much. Maybe someone can recomend me an sd card wich works at greater speeds with a rooted desire, and maybe a place where i can buy it from UE thanks.

that's strange. I have a class 4 Kingston 16GB card and I get 6mb write and 5mb read!
Phil

littlej said:
Hy, i have tested the sd card with that aplication, i get 2mb write and 4mb read. I have instaled cyanogen and another rom without sense, speed went from 2mb write to 3mb write and that was all...i have tryed it without an ext3 partition also and speed was the same... so i went back to sense rom... since the speed improvement its not much. Maybe someone can recomend me an sd card wich works at greater speeds with a rooted desire, and maybe a place where i can buy it from UE thanks.
Click to expand...
Click to collapse
You said earlier that you have a class 6 SD card, so you should be getting at least 6MB/s. Do you have something other than your phone that you can test your SD card in, for example a card reader? That would help you to work out whether the problem is with your SD card or the phone.

if u can recomend me a software to test it in windows 7 x64 i can test it in my laptop

Hy, well problem is solved for me. I have tested the card in laptop and i was geting a 2mb/s write and sometimes jumped at 3-4mb/s max. So i sent it back, and got an A-data 8gb class 6. I pluged it straight into phone, recorded a video and worked flawless, i installed android sd card speed test and i got a write of 6mb/s and 7mb/s read. Afther that i did an ext3 partition on it, and got same write and read speed, so problem was the SD card. Thanks.

[Q] Apps2SD vs Data2Whatever vs data2SD

What is the differences with
Apps2SD vs Data2Whatever vs data2SD etc... or if there are anymore that i may had missed out.
Which one is the best to use and most efficient to use?
Are there any instructions for the best way to free up internal memory? as it is near enough full having 15mb remaining.
HTC-Desire
Rom - Running GingerBread 2.3 GingerVillain 1.1

I can't really explain the differences too well, but there's loads of threads to read about it if you look.
For me, using Gingervillain, I find A2SD+ to be great.
I have a 750MB ext3 partition on my SD card, of which I have used approx 250MB (approx 35 - 45 apps plus the Dalvik cache), so I have loads of this left to use, meanwhile my actual free phone memory stands at about 110MB.
Gingervillain has A2SD+ built in, so if you make sure all of your apps are saved to internal memory, not SD card, they'll actually be on the ext partition of your SD card.
I followed this advice to move the Dalvik Cache to the SD card:
"For those off you who do not understand any off all the above about moving dalvik cache it is as follows. You got two options to move your dalvik-cache.
the first requires you to have the Android-SDK (or at least ADB) installed on your computer. If you don't have this, leave it.
What you do is as follows: in windows command prompt:
> adb (-d) shell
a2sd cachsd
you will see some rolling text and phone will reboot.
The second option is on the phone itself. This is the fastest way in my opinion. For this you need to download the app: Android Terminal Emulator from the market.
Start up terminal after download and punch in as follows:
# su
after that terminal will ask for superuser permissions. Allow these.
# a2sd cachesd
and again some rolling script and phonme reboots
I can't break it down easier then this.
Good luck
MOVING BACK TO PHONE:
If you are using Darktremor A2SD, just enter an ADB Shell, or terminall emulator on phone, enter su and type a2sd nocache."
Hope this helps
: )

Woww... my click on right app2sd app. Thanks for pool. keep sharing.

Hi!
I´m using RCMixHD Data2ext version, it´s very fast and smooth.
Also i tried A2SD+ and Data2WE, but with A2SD+ ihad to less free space and Data2WE was very laggy.
When using Data2ext it´s recommended a class 6 SD Card (I´m using class 10)
With class 2 or 4 you can get problems.

Data2SD performance
I'm using Data2SD with the Gingerburst ROM on my HTC Desire. I've just got a Vivacity and having looked into App2SD I'm going to load Data2SD on that too.
Data2SD is an elegant solution which uses the ext4 filesystem to create a single large internal memory space of over 2Gb (2Gb is the maximum size of the ext4 partition on the SD card, plus the internal partition) which the OS addresses seamlessly. The two separate partitions are addressed by the OS as a single ext4 space. So no need to move apps around, or problems if the wrong apps are moved. Speed is fine, but benefits from a fast SD card - as I'd expect any apps run from SD cards would irrespective of the software solution.
I recently upgraded from a 4Gb Samsung Class 6 micro-Sd card, to a 16Gb SanDisk Class 4 card. I have around 2Gb of internal memory, 70% of which is still free and performance is good - better since I got the SanDisk.
Class isn't a good guide to performance since it relates to the sequential access speed - continuous access typically relevant to big files like video or images. High sequential speeds seem to be achieved at the expense of lower random speeds and many Class 10 cards have very low random access speeds for small files. Phone apps frequently access small files therefore random access is a better guide to performance in a phone and I would avoid cards with any low performance in this area.
Here are the results for my SanDisk Class 4, whose lowest random read/write speed is the highest I could find:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo
Crystal Dew World :
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 22.204 MB/s
Sequential Write : 4.845 MB/s
Random Read 512KB : 20.493 MB/s
Random Write 512KB : 0.538 MB/s
Random Read 4KB (QD=1) : 3.456 MB/s [ 843.8 IOPS]
Random Write 4KB (QD=1) : 1.337 MB/s [ 326.4 IOPS]
Random Read 4KB (QD=32) : 3.111 MB/s [ 759.6 IOPS]
Random Write 4KB (QD=32) : 0.499 MB/s [ 121.8 IOPS]
Test : 1000 MB [G: 0.0% (0.0/14.8 GB)] (x5)
Date : 2012/02/08 12:59:34
OS : Windows 7 Home Premium Edition SP1 [6.1 Build 7601] (x64)
Both my Samsung 4G Class 6 card, and the SanDisk outperform the unbraanded 2GB card which came with a T-mobile Vivacity I recently bought.
My SanDisk Class 4 is slightly quicker in use than my SanDisk Mobile Ultra - the phone boots and most apps load more quickly - around 10%.
Whichever approach you take to extending the internal memory of your Android, it's going to benefit from a faster random access memory card - I'd be interested to see if anyone else has found a card with better results.

Please use the Q&A Forum for questions &
Read the Forum Rules Ref Posting
Moving to Q&A

In GB, I really enjoyed Data2Whatever but unstable in ICS Rom.
I'm using Apps2SD on Sandvold's ICS until now.

LBA mode MicroSD problems - no LBA: +14MB/s on Patriot LX 16GB

Summary:
I bought a Patriot 16GB LX Series Class10 MicroSD and had huge problems with it. Freezes etc.
After partitioning with FAT32 without LBA the Patriot Class10 is superfast, 14MB/s write speed under Android Froyo. LBA mode was the culprit.
I have not tested this over several days, but so far things seem to be fine.
Problem description:
Phone: Motorola Defy on Froyo Orange. Problem also exists with LG P500
The Patriot 16GB LX Series Class10 MicroSD seemed to lock up, apps were freezing. Speed tests with SD Tools from the Market also locked up.
The Patriot worked however fine when put into a card reader with a PC. Write speeds are consistently over 12MB/sec. I tested also with Check Flash, google for "chkflsh misha"
I reformatted with the official SDFormatter Tool V.2.0. from the SD Association. No go, same problem.
How to solve:
1. Remove existing partition on MicroSD and make a new partition with FAT32 without LBA mode.
I used the Check Flash low level initialization function for partitioning, google for "chkflsh misha"
2. Format MicroSD under windows, command line with:
format X: /fs:fat32 /a:32K
Click to expand...
Click to collapse
(DO NOT use SDFormatter from the SD Association to format as the program repartitions the MicroSD in FAT32 LBA Mode!)
With FAT32 no LBA 32k allocation size the Motorola defy blazes away with the Patriot 16GB LX. Write speeds + 14MB/s are shown by SD Tools.
Thoughts:
My humble guess is that the Motorola Defy accesses the MicroSD in non-LBA mode and that leads to problems if the partition is LBA. This is either caused by the MicroSD controller or the Defy.
I also suspect that various MicroSD problems of other phone/card combinations are caused by LBA partitions.
As far as I can see LBA is anyway superfluous as Android can only access 32GB SD Cards currently.
Cheers
Geejay

Usually class 2 and 4 cards are better for use with phones and for running OS's or apps off of. Class 10 cards are designed to have fast sequential write speeds, but sacrifice their random read/write speeds and access times to achieve their fast sequential speeds. It's because they they initialize the section of the card that they are about to write to, which gives great speeds in sequential writes, but will cause delays and freezes when doing things that need quick access to different parts of the card or tasks that will read/write small bits of data from different parts of card.
Many people assume that higher class cards are better, but it really depends on what you're using the card for. For digital cameras, higher class is better, but for cell phones, where you will running apps or parts of the OS are store and accessed from the card, you want a lower class with better access times and random read/write speeds.
Different cards are better for different tasks.

Thanks for your comments. I bought the card because it was the cheaper than Kingston, the only other alternative in that shop.
Here is an interesting article, with detailed info of what you mentioned.
Google for "Working Groups Kernel Consolidation Projects FlashCardSurvey", I cannot post links.
It seems that these Patriot cards are indeed linear write. The author mentions a superior SanDisk algorithm for access.
Interesting benchmark which seem to confirm this: google for "MicroSD card performance test results"
Looking at the table Kingston seems to be slower than Patriot.
In any case there seems to be an LBA problem with the Froyo/Patriot combo.

Yeah, Kingstons are terrible for access speed and random read/write from the tests I've done. I'll never buy a kingston again. I usually stick with Sandisk... it's usually worth any extra money they cost to know you're getting a quality card. I have 8 different sandisk cards now... 2 32gb, 2 16gb, 2 8gb, 1 6gb and 1 4gb, and haven't had a problem with any of them and all except one has worked flawlessly with WP7 and all have worked great running android off of on my HD2.

I was interested in buying this patriot memroy card, is there anyone who can tell me whish access time ? ( you can use hd tune 2.55 to check it ! )

please delete

HD2 with cLK and clockworkmod recovery on Patriot 16gb class 10
geejay2 said:
Summary:
2. Format MicroSD under windows, command line with:
With FAT32 no LBA 32k allocation size the Motorola defy blazes away with the Patriot 16GB LX. Write speeds + 14MB/s are shown by SD Tools.
Click to expand...
Click to collapse
Thanks so much for the idea. Seems to have fixed the problems I was having with the card. My problem is that the ext3 partition is automatically formatted by the recovery program I'm running (clockworkmod 4.0.0.0), so I can't do the same for that partition.
I'm still not getting great write times, but read times are good for sequential:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 12.588 MB/s
Sequential Write : 3.915 MB/s
Random Read 512KB : 16.033 MB/s
Random Write 512KB : 1.103 MB/s
Random Read 4KB (QD=1) : 1.782 MB/s [ 435.1 IOPS]
Random Write 4KB (QD=1) : 0.129 MB/s [ 31.4 IOPS]
Random Read 4KB (QD=32) : 2.024 MB/s [ 494.2 IOPS]
Random Write 4KB (QD=32) : 0.111 MB/s [ 27.1 IOPS]
Test : 100 MB [H: 11.5% (1.6/13.9 GB)] (x9)
Date : 2011/09/20 14:23:51
OS : Windows XP Professional SP3 [5.1 Build 2600] (x86)

Thanks!
Just singned up to say thanks.
Just followed your instructions for an 8 GB Verbatim Class 10 card. Seems to work. It was laggy and buggy before that.
Thanks

Wow! This LBA thing seems complicated, is it really needed...? Heard that formatting in different cluster sizes can solve the problem already, maybe this LBA thing is not needed...?
BTW, Chkflsh doesn't seem to have a partition function at all...?
Cheers.

And how do we format in non LBA mode? I cannot find any instructions anywhere...
Please, help!

florin20032003 said:
And how do we format in non LBA mode? I cannot find any instructions anywhere...
Please, help!
Click to expand...
Click to collapse
My thoughts/problem as well...

Mac option for non-LBA formatting??
Hello everyone...
Was wondering if anyone knew of a Mac option to format in non-LBA mode. Does the internet formatting utility is the Mac OS ("Disk Utility") use LBA or no??
THANKS!!