Database Users

Q-TEC 9000 with Transcend 4GB SD slow transfer

Can anybody tell me how I can fix my transfer speed with ActifSync 4.0.
Because if I upload the transfer rate is about 100 kb/s.
Anyone with the same phone and sd-card please help me.
Thanks
Ercan
Holland/Turkey

If you want faster transfer speeds use a card reader. Using activesync the data first gets moved to the universal, then from the universal to the memory card. This is very slow due to the limited bus speed of the universal.

But with my 512 mb card, I get normal speed. I think you dont understand how slow it is. Let me explane.
512 mb > 3 sec 1 song
4 gb > 30 sec 1 song

Yesterday I bought a Transcend 4GB 150x SD card.
It's very slow; not only when using it in my HTC Universal, but also in the cardreader in my PC.
I'm going to return it tomorrow...

Jan after reading some reviews they say that it is one of the fastest cards. I think the problem is with the reader. I can now transfer at usb 1.0 speed with Card Export II.
Are there any app. with 2.0 support?

Very slow writing speed on microSDHC card

Happy new year guys. I bought two microsd cards. One is a PQI 2GB microSD card for flashing. Another one is a Ridata 4GB microSDHC card for everyday stuff, with a speed class of 6. I don't know the class of the PQI.
I noticed that when copying files from the pc, or when just copy pasting files within the Hermes, the writing speed is very slow. For both cards, the PQI and Ritek, they're around 400 kB/s to 600 kB/s. I used both WM5torage and activesync and they're both this slow. Even for a class 2 card, such speeds are slow. I RMAed the PQI one due to CRC errors when copying. The Ridata has no errors but is still very slow.
I searched the forums and installed the SD tuneup.cab file, restarted the Hermes and its still the same writing speed, around 400kB/s. I used the microsdhc in a card reader in a pc and it writes at 6 MB/s. What could be wrong, why such a writing speed difference? I have red about posters with writing speeds as much as 9MB/s with their phones in the Hermes accessories forum.
The specs of my phone are:
Cingular 8525 Hermes 100
PDACornerPro.V27
Radio 1.56
HardSPL v7
Ridata 4GB microsdhc class 6
Any suggestions, comments? Thanks.

Mate, join the club... I don't really believe that when connected through activesync you will get very fast speed copying. Its ALWAYS been slow as a stoned snail when copying through the phone. sd card readers move like lightening in comparison.
Don't believe you're gonna find an answer to the slow speed problem.
Cheers...

You mean from the very start till now, the Hermes really writes slowly? But some people on the Hermes accessories forum have write speeds up to 9MB/s. Maybe there is a fix/tweak somewhere I don't know about and still not able to find through searching? Any ideas? Thanks.

I've never found it. Most threads I've read about this issue are lamenting the fact it has such a slow read/write speed when connected through activesync.
I generally backup and transfer files through an sd card reader.
Cheers...

Thanks for the reply. Maybe I'll just use a card reader to save time. But those folks at "What brand SDHC card is everyone using?" thread have speeds up to 9MB/s when writing. Aren't they using the Hermes? Or they're using a card reader?

Probably a card reader. They may also be talking about when transfering files to/from sd card when using the Hermes's own file manager as that is fairly fast. I use a class 6 8Gb card for reading Tomtom maps and there is no lag, had a bit previously with a 2Gb card.
I believe the hangup is in microsoft's active sync program. No0t sure about those using vista's own transfer app.
Cheers...

ultramag69 said:
Mate, join the club... I don't really believe that when connected through activesync you will get very fast speed copying. ...
Click to expand...
Click to collapse
Actually, Activesync can be fast.
Activesync on an XP machine copying to my Herm100 is quite slow, a card reader is much better, but the same Activesync copied to the latest HTC (don't know the model) slidey keyboard phone's internal memory in comparatively lightening speed.
So is there different configurations or drivers for the USB connections on our phones and/or ROMS ?
G.

As you said
Ogier said:
Activesync copied to the latest HTC (don't know the model) slidey keyboard phone's internal memory in comparatively lightening speed.
G.
Click to expand...
Click to collapse
Maybe something in the hardware of the newer phones because if it was software, since the chefs use the ported os of the later devices, we should also be getting better speeds if we had updated the OS. I'm currently using build 21109 and I haven't noticed a speed increases...

Thanks for the replies guys. I think its really the hardware of the Hermes that is slow. I bought a cheap $1 card reader and its very fast compared to the Hermes' own card reader. I used Sisoftware sandra to bench my cards. My RMAed 2GB PQI card writes at around 6.5 MB/s while my Ridata 4GB card writes at around 5.4 MB/s. What a difference a dollar makes

Why is USB transfer rate so slow?

Hi experts I was hoping somebody here could throw some clues my way.
I have a 32A Rogers magic. (rogers HOFO )
I usb mounted the drive, and transferred a movie on there just for fun, and it was really SLOOOOOW , using the 2 gig sandisk microsd card it came with
So I tested the transfer rate, and write was about 3 meg/second. ouch
reads are about 5 meg/second (!)
SO I got an 8 gig type 6 card to solve this problem. I tested it first with a usb card reader, it reads at 16 - 17 meg/second (same usb port)
Put it in the Magic, and I'm back to 3 / 5 again, with the new card too.
The specs say "USB 2.0" - yet this is unbelievably crappy usb transfer rates :-(
I tried my buddy's Dream, it's exactly the same too. 3 / 5
Why? Any clues? Is there something to tweak?

are you using the usb cable that came with it or your own one?
either way, have you tried a different cable?

yes, tried that. And with a whole other phone, computer, and cable ;-)
I just tried it again though, it's the exact same, 3 MB/s write, 5.7 MB/s read on the HTC cable, and the normal one I use.
Why, is yours faster?
Could you use a stopwatch (like www.online-stopwatch.com),
and copy around a 100 or 150 meg .ZIP file to it, and tell me how many seconds it took?

i just transferred a 550mb video clip from my laptop to my phone and it took 1m 28s.
my laptop isn't particularly fast either, so will have had some affect.

Thanks
That's about 6MB/s (550/88), that's better for writes than mine, close to double...
How long does it take to get it back, reading?

59 seconds.
but don't forget my laptop sucks so that time will be a bit high.

9.3 MB/sec still kicks mine. Thanks for checking that out.
This one reads really fast on a card reader, over 16MB/s
I guess it doesn't like Android phones. :-( I don't get it.

What brand / class is your card? Mine's transcend 8GB type 6

mine is the same.
at least, i think it's transcend.
it's certainly 8gb class 6 anyway.

just a thought...
what rom are you using?
the default or a modified one?

The HOFO roms
I've got it up to 8 to 9 MB/s writes, and 6- 7 MB/s reads now
That's exact opposite to yours, lol.

USB Sync Speed

Hi.
There's one question which has not been asked yet (I think) and that's about USB Speed.
When I connect my HTC Touch Cruise to the PC and start a file transfer I get speeds around 250kb/s. What about the new Leo? Is there any improvement?

when syncing mp3s with wmp I get around 2-3MB/s but I haven't tried large files yet. using the included 2gb card of course!

With an A-Data MicroSDHC 8GB class 6, transferring a 680MB file I'm at full speed.
I mean that I'm getting 5-6MB/s!

The transfer speed of the HD2 is a joke when compared to the USB 2.0 specs and the extremely low transfer speeds does not have anything to do with the cards used.
There is a big difference in the speed of ANY card when used with hd2 compared to a card reader. And the truly limiting factor is only the hd2.
When i'm in "disk drive" (not activesync) mode the write transfer speed to the sd card is only about 1.8 MB/s which i think extremely slow. The read speed is only ~3.5 MB/s.
I've tried that with 2 different cards, both 2 GB sandisk.
When i plug them into my PC or notebook using an USB-adapter i have the write speed ~5.5 - 6 MB/s and read is ~ 8-9 MB/s.
Click to expand...
Click to collapse
So the speed is about 3x higher in any card reader.
Take alook at the following thread:
http://forum.xda-developers.com/showthread.php?t=628582&highlight=usb+speed

nicky-xda said:
The transfer speed of the HD2 is a joke when compared to the USB 2.0 specs
Click to expand...
Click to collapse
Don't forget this is going through activesync, which is a protocol that really isn't meant for large file transfers. And that previous phones were only doing a couple hundred kB/s.
Use Disk drive mode when transferring big files. Hits 5MB/s.

@kilrah:
please read my posting above:
When i'm in "disk drive" (not activesync) mode the write transfer speed to the sd card is only about 1.8 MB/s which i think extremely slow. The read speed is only ~3.5 MB/s.
Click to expand...
Click to collapse

OK then, but in that case you're off-topic as the thread was about activesync
Anyway, I can't duplicate that. In disk drive mode I have 4.5MB/s writes and 6.5MB/s reads, similar to what someone else mentioned earlier. With a 8GB class 6 Sandisk card.

kilrah said:
OK then, but in that case you're off-topic as the thread was about activesync
Anyway, I can't duplicate that. In disk drive mode I have 4.5MB/s writes and 6.5MB/s reads, similar to what someone else mentioned earlier. With a 8GB class 6 Sandisk card.
Click to expand...
Click to collapse
Yup, same here; I got fast speeds when not in Activesync and applied tweaks to my Win 7.
It is also notable that unless tweaked, Win Vista and Win 7 copy files poorly (even between 2 different physical hard drives!) so compounded with Activesync, Windows may be contributory factor to the OP's problem.

[Q] Slow Android USB-Masstorage connection

I searched similar threads, but i found no proper answer to my question.
Is this a general android-build problem on the HD2?
I tried it with different PC's (XP/W7) and Roms (SD and NAND) and everytime
i get a only a transfer rate between 300 to 500 kbyte/s
(this is really slow! WM 6.5 connection was up to 10 Mbyte/sec)
It's a C10 sdcard and i already installed the SD read forward patch with 2048kb.
So internal reading/writing speed is not the problem.
What can i do to speed up the USB - Connection ??
(...please don't tell me to use a cardreader - this was not questioned!)
thanks!

there is a solution i believe... check out
http://forum.xda-developers.com/showthread.php?t=1010767

hellraiser-rh said:
I searched similar threads, but i found no proper answer to my question.
Is this a general android-build problem on the HD2?
I tried it with different PC's (XP/W7) and Roms (SD and NAND) and everytime
i get a only a transfer rate between 300 to 500 kbyte/s
(this is really slow! WM 6.5 connection was up to 10 Mbyte/sec)
It's a C10 sdcard and i already installed the SD read forward patch with 2048kb.
So internal reading/writing speed is not the problem.
What can i do to speed up the USB - Connection ??
(...please don't tell me to use a cardreader - this was not questioned!)
thanks!
Click to expand...
Click to collapse
I hate you man i was opening Q&A to post exactly about the same issue!
However i had a very satisfying SDcard read and write speeds, that is when i formatted it with SD formatter tool and WITHOUT any partitioning of it!
Today i wanted to try a sence build with EXT partition so i formatted the SDcard with the internal Partitioning tool of CWR to 1GB EXT. Then i formatted the SDcard (both FAT32 and EXT) with CWR.
I flashed a ROM and went to USB storage mode, and i was shocked!
The SDcard is now muuuuuuccccchhhh slower!!! Why is that?! And what can we do about it?!
kiki_tt said:
there is a solution i believe... check out
http://forum.xda-developers.com/showthread.php?t=1010767
Click to expand...
Click to collapse
Man he said that he applied that, besides that only affects internal speeds!

So can I just format my 32gb class 10 stick and run 1 fat32 partition and enjoy better performance or do we need the ext3 partition? Mines only like 200MB or so.

If using windows do you have some sort of Virus Scan going on. Is the USB hub on the computer really at USB 2.0 or more?

yep. It's a external powered 7 port usb 2.0 hub. When I plug the micro sdhc card into my usb card reader which plugs into the hub I get write speeds of 15MB/s+! Then I plug it in the phone and It pulls off 2MB/s barely. This is a CLASS 10 32GB Micro SDHC card. I changed the read_ahead_kb to 2048. No change. I'll test out 3072 and 4096. I think there's some driver issue with windows and the android usb driver or something. It's slow on several machines all operating at usb 2.0 specifications. Do we need to install software for the device? If so let me know! I get an unknown device when i plug the phone in and not usb mass storage, it tries to install the Android internal memory driver with no success. Supposedely google has a special driver for windows where u need the java developtmental sdk and the google java sdk. I'll update later. Any suggestions would be killer awesome!

any idea?
I've got a USB 2.0 connetction and the sdcard is not the Problem.
With my SDHC-reader in the same USB-port i get the normal speeds!
And i don't had this problem with WM6.5!!
With WM6.5 my spped was similar to the USB-reader!
But now ... with Android in NAND.....
The Speed problem occurs at all my PC's (XP,Vista and W7) and
with all the old SD-Build's (i thought that was an SD-Build problem)
and now with the NAND-Build (rafpigna Sense HD 4.02 ext) nothing changed !

So it is a general problem I think, not only me
Well, I was using dual mount SD for mounting the SDCard to the PC and the writing speed on the SD (class 6) was about 900KB ! But after I tried the native android mounting it was risen up to 3.4MB -which is also much slower than the card reader (~7MB)-

Same problem here ...
from the boot loader i get better write speeds ...
i tried ftp transfer too , no diferince in speed (still around 800 kbs).
i tried over wifi , still no difference.
iam using:
Pyramid HTC Europe 1.35.401.1 - Real 3D V2.3

I found out how to fix the problem. It lies within windows disk checker. Automatically fix file system errors, and Scan for and attempt recovery of bad sectors. This will take a long time depending on your speed and size of your memory stick. I do this when my speeds slow down. For my 32GB Class 10 card, it could take 2-4 Hours. However I'm getting 12-16MB/s write using windows and CWR. Make sure your device is being detected at USB 2.0 Speeds. Trust me! Doing it once ever couple days your speeds will be faster and faster. Even exceed the class specification of your card. This fixes the slow read/ write speeds!!!!
CYA

1chris89 said:
I found out how to fix the problem. It lies within windows disk checker. Automatically fix file system errors, and Scan for and attempt recovery of bad sectors. This will take a long time depending on your speed and size of your memory stick. I do this when my speeds slow down. For my 32GB Class 10 card, it could take 2-4 Hours. However I'm getting 12-16MB/s write using windows and CWR. Make sure your device is being detected at USB 2.0 Speeds. Trust me! Doing it once ever couple days your speeds will be faster and faster. Even exceed the class specification of your card. This fixes the slow read/ write speeds!!!!
CYA
Click to expand...
Click to collapse
ill try it ... reporting back after trying...
ok not working on the phone... ill set the sd card into a reader and try it out there

dint work at all ... some one else should feel free to confirm this
here is a bug report for this problem:
http://code.google.com/p/cyanogenmo...etwork Owner Summary Stars Priority&start=100

Ok, sorry. I'll start at the beginning and explain every detail on how to get amazingly excellent performance from you sd card. Your going to be required to format it to fat32 64kb cluster for optimum performance. That's #1 and required. If you need your ext3,4 etc partition. I'm sorry. You will have to continue to bare the poor performance. You need a raw fresh sd card. Then I would run a disk check to correct any internal errors that windows uses, with all options checked this should take a while to complete. On my 16gb class 2 it takes atleast 45 minues and 2 hours on my 32gb class 10. Windows disk checker perfects the clusters and the file system integrity. Run it once on a fresh sd card. Then transfer a file 100MB or larger to get good speeds. Transferring a ton of smaller files will always be 50-75% of your class specification. There is no way around this. The card will transfer at it's class when transferring large files. If the card was able to transfer at it's specified class with small files, would require more energy to perform the task and cause the card to overheat since it's performing more operations a second with a lot of small files compared to a few large files. One thing you will always need to keep in mind is the performance is very delicate and will not be maintained for long if you don't take extra special care of safely removing the device from the computer. I've been lucky to just turn off usb mass storage when the transfer is complete and have maintained my speeds this way. However before I dialed in to how to keep it performing excellent I would constantly cause the card to perform way worse after only a day or 2 after the optimization. To keep it running optimum make sure to run windows disk checker once a month or when it slows down. Make sure you format using either Windows format function from my computer or Disk Management. I have found that the windows methods are far superior to maintaining excellent performance since Windows writes the format data to the card in the manner it prefers to use on a daily basis. Third party applications perform the same simple "similar" task in a different manner technically speaking. I have noticed performance loss from tests I have ran comparing 3rd party format compared to windows format. Also the 64Kilobyte cluster size performs the best on all files sizes. Do not use anything smaller than that. Also a 3072KB read ahead in android on average performs better than a 2048kb read ahead. If you have any additional questions. Don't hesitate to ask.
Thanks cya!

Same phone on Mac & Windows
I have tried the same phone Samsung Galaxy S2 doing a 1 GB write to SD on a Windows machine vs a Mac. The Mac transfers in about 5 min the Windows machine takes about 20 min. Both machines are with the External SD mounted and copy and paste a folder with 10,000 files in it.
I then tried it with Motorola Atrix and get the same results.
I need a way to rapidly write 8GB of data every night to 46 phones... No I am not going to take the SD cards out of the phone and use a card reader.
Anyone have any idea what could be causing the slow down on Windows?

Read the above post and it will fix your problem.

1chris89 said:
Ok, sorry. I'll start at the beginning and explain every detail on how to get amazingly excellent performance from you sd card. Your going to be required to format it to fat32 64kb cluster for optimum performance. That's #1 and required. If you need your ext3,4 etc partition. I'm sorry. You will have to continue to bare the poor performance. You need a raw fresh sd card. Then I would run a disk check to correct any internal errors that windows uses, with all options checked this should take a while to complete. On my 16gb class 2 it takes atleast 45 minues and 2 hours on my 32gb class 10. Windows disk checker perfects the clusters and the file system integrity. Run it once on a fresh sd card. Then transfer a file 100MB or larger to get good speeds. Transferring a ton of smaller files will always be 50-75% of your class specification. There is no way around this. The card will transfer at it's class when transferring large files. If the card was able to transfer at it's specified class with small files, would require more energy to perform the task and cause the card to overheat since it's performing more operations a second with a lot of small files compared to a few large files. One thing you will always need to keep in mind is the performance is very delicate and will not be maintained for long if you don't take extra special care of safely removing the device from the computer. I've been lucky to just turn off usb mass storage when the transfer is complete and have maintained my speeds this way. However before I dialed in to how to keep it performing excellent I would constantly cause the card to perform way worse after only a day or 2 after the optimization. To keep it running optimum make sure to run windows disk checker once a month or when it slows down. Make sure you format using either Windows format function from my computer or Disk Management. I have found that the windows methods are far superior to maintaining excellent performance since Windows writes the format data to the card in the manner it prefers to use on a daily basis. Third party applications perform the same simple "similar" task in a different manner technically speaking. I have noticed performance loss from tests I have ran comparing 3rd party format compared to windows format. Also the 64Kilobyte cluster size performs the best on all files sizes. Do not use anything smaller than that. Also a 3072KB read ahead in android on average performs better than a 2048kb read ahead. If you have any additional questions. Don't hesitate to ask.
Thanks cya!
Click to expand...
Click to collapse
Hi!
Thank you for this thorough and correct advice. It solved my problem with my SDHC class 4 card used in a Samsung Galaxy Gio. My computer (Win7) could write on the card with only 150 kb/s, now it is around 2200-3000 kb/s.