Extremely slow usb transfer/copy

My Macbook Air 13" medio 2011 copies extremely slow to usb.
I made a benchmark and got the following results:
System Info
Xbench Version
1.3
System Version
10.8.3 (12D78)
Physical RAM
4096 MB
Model
MacBookAir4,2
Drive Type
SanDisk Cruzer Blade
Disk Test
5.64
Sequential
7.54
Uncached Write
4.39
2.69 MB/sec [4K blocks]
Uncached Write
4.61
2.61 MB/sec [256K blocks]
Uncached Read
16.21
4.74 MB/sec [4K blocks]
Uncached Read
41.74
20.98 MB/sec [256K blocks]
Random
4.50
Uncached Write
13.94
1.48 MB/sec [4K blocks]
Uncached Write
1.24
0.40 MB/sec [256K blocks]
Uncached Read
553.36
3.92 MB/sec [4K blocks]
Uncached Read
109.49
20.32 MB/sec [256K blocks]
When I bought the computer the usb transfer speed, was fast, but have become very slow over time.
I've tried to do a clean install of OSX but it has not helped

This is a know issue for last 2 years and there has been no response from Apple. I guess its time to ditch mac and install Ubuntu.

Similar Messages

Slow USB transfer

I can't figure out how to replicate this yet, but it's happened twice today. I'm stuck and don't know what to look at next, but it's a problem.
My USB transfer speeds slowed to a crawl on a 2GB directory copied via Ranger just now, and earlier on a larger transfer. Several GB took ~2 hours over USB 2.0 from ext4 HDD to fat32 USB. The USB stick is RadioShack's GigaWare brand and shows up as Sandisk in lsusb, and never been formatted since i opened it.
Looks like ehci_hcd is loading properly for the disk. usb 8-2 is my mouse. Got a USB fan plugged in (one 5V one), too.
I haven't modified the udev rules and usually let udiskie mount things.
dmesg | grep usb
[304447.009631] usb 1-3: reset high speed USB device number 2 using ehci_hcd
[304447.239650] usb 8-2: reset full speed USB device number 2 using uhci_hcd
[306484.456105] usb 2-1: new high speed USB device number 7 using ehci_hcd
[306484.581252] scsi10 : usb-storage 2-1:1.0
[309421.079092] usb 2-1: USB disconnect, device number 7
[324573.564350] usb 8-2: USB disconnect, device number 2
[372694.409521] usb 8-2: new full speed USB device number 3 using uhci_hcd
[372694.576607] input: Microsoft Microsoft® Nano Transceiver v2.0 as /devices/pci0000:00/0000:00:1d.2/usb8/8-2/8-2:1.0/input/input17
[372694.576714] generic-usb 0003:045E:0745.0004: input,hidraw0: USB HID v1.11 Keyboard [Microsoft Microsoft® Nano Transceiver v2.0] on usb-0000:00:1d.2-2/input0
[snip]
[496984.930431] usb 2-1: new high speed USB device number 8 using ehci_hcd
[496985.056227] scsi11 : usb-storage 2-1:1.0
[498636.454057] usb 2-1: USB disconnect, device number 8
[499099.880160] usb 2-1: new high speed USB device number 9 using ehci_hcd
[499100.005128] scsi12 : usb-storage 2-1:1.0
[499953.395984] usb 2-1: USB disconnect, device number 9
[659242.307482] usb 2-2: new high speed USB device number 10 using ehci_hcd
[659242.786728] usbcore: registered new interface driver usblp
[661547.446152] usb 2-2: USB disconnect, device number 10
[681909.354822] usb usb3: root hub lost power or was reset
[681909.354862] usb usb4: root hub lost power or was reset
[681909.354902] usb usb5: root hub lost power or was reset
[681909.355014] usb usb6: root hub lost power or was reset
[681909.355053] usb usb7: root hub lost power or was reset
[681909.355091] usb usb8: root hub lost power or was reset
[681909.595249] usb 1-3: reset high speed USB device number 2 using ehci_hcd
[681909.825233] usb 8-2: reset full speed USB device number 4 using uhci_hcd
[788645.857480] usb usb3: root hub lost power or was reset
[788645.857521] usb usb4: root hub lost power or was reset
[788645.857560] usb usb5: root hub lost power or was reset
[788645.857806] usb usb6: root hub lost power or was reset
[788645.857861] usb usb7: root hub lost power or was reset
[788645.857901] usb usb8: root hub lost power or was reset
[788646.097878] usb 1-3: reset high speed USB device number 2 using ehci_hcd
[788646.327888] usb 8-2: reset full speed USB device number 4 using uhci_hcd
[1043552.825767] usb 2-3: new high speed USB device number 11 using ehci_hcd
[1043552.951568] scsi13 : usb-storage 2-3:1.0
[1069442.865548] usb 2-3: USB disconnect, device number 11 # Disk unmounted with udiskie via pcmanfm and physically removed
[1069585.269848] usb 2-3: new high speed USB device number 12 using ehci_hcd # Disk reinserted and mounted
[1069585.394806] scsi14 : usb-storage 2-3:1.0 # Transfer speeds are normal again
I'm not sure where to look next to try to diagnose. There's a bug report that may describe this but i'm out of my depth here.
On edit I'm assuming those power lost/reset events are suspends but not sure.
Last edited by nathan28 (2011-08-24 03:19:46)

First of all, what I'm about to say may be close to worthless... but that never stopped me before
But this caught my eye:
Looks like ehci_hcd is loading properly for the disk. usb 8-2 is my mouse. Got a USB fan plugged in (one 5V one), too.
combined with this:
[788645.857480] usb usb3: root hub lost power or was reset
[788645.857521] usb usb4: root hub lost power or was reset
[788645.857560] usb usb5: root hub lost power or was reset
[788645.857806] usb usb6: root hub lost power or was reset
[788645.857861] usb usb7: root hub lost power or was reset
[788645.857901] usb usb8: root hub lost power or was reset
I have a nettop powered by one of those little 90W "brick" power supplies and if I plug my Hauppage USB TV adapter into the sucker it draws so much power that all hell breaks loose on the system. I can't tell how badly though because the USB keyboard goes dead.
A powered USB hub fixed that issue.
But again, I have no idea if this is even remotely related to your errors.
Another thing (since I'm on a roll with bad advice)... I've got some USB flash drives that are simply dog slow... they just are. Put a different brand into the same slot and do the same operations and the difference is amazing. Plus, you don't mention the size of the USB flash drive, but they are known to get slower on writes the closer they are to being full... that's just how they roll.

Lenovo Thinkpad X1 - Extremly slow file transfer through e-sata

Hi there! I have got another issue with my notebook - the file transfer through e-sata is extremly slow (about 5MBpS). Using Windows 7. Where could be the problem? Thanks.

Hi Gabbi,
thanks for posting. You might want to check in your control panel which Lenovo preloaded software are installed. One software which I've seem has caused this issue is the Lenovo Rapid Shield and and Lenovo Airbag Protection.
Could you try disabling them and check for the changes.
do let me know..
regards

Extremely slow file transfer from wifi server to MacBook Pro

I am experiencing extremely slow file download speeds from my wifi server to my MacBook Pro. I have just carried out a test - transferring a 16.5Mb folder took 8 mins, 24 secs. Transferring the same folder to my iMac G5 takes less than 3 seconds. Also, copying the same folder from my MacBook Pro to my wifi server only takes 22 seconds. Any suggestions PLEASE!!!!!

Try getting it on the Mac using something other than iPhoto.
In Windows, it would simply be a matter of opening Explorer and copying the file(s). I'm fairly certain that Mac has a similar feature, but I'm not familiar with Macs.
Not really an iPhone issue... more of an issue with the application being used to import the file.

Extremely Slow USB 3.0 Speeds When Transferring Large Amounts of Video

Hi there,
I am transferring large amounts of footage (250GB-1.75TB chunks) from 5x 5400rpm 2TB drives to 5x 7200rpm 2TB drives simultaneously (via 6x USB 3.0 connections and 4x SATA III, with copy/paste in explorer) and the transfer speeds are incredibly slow. Initially the speeds show up as quite fast (45-150mb/ps+) but then they slow down to around 3mb/ps.
The drives have not been manually defragmented but the vast majority of the files on each are R3D video files.
I am wondering if the amount of drives/data being used/sent is what is causing such slow speeds or if there might be another culprit? I would be incredibly appreciative to learn of any solutions to increase speed significantly. Many thanks...
Specs:
OS: Windows 7 Professional
Processor: i7 4790k
RAM: 32GB
GPU: Nvidia 970 GTX

If the USB ports are all on the same controller, they share their resources, so the transfer rate with 6 ports would be max 1/6-th of the transfer rate with 1 USB port if we disregard the overhead. Add that overhead to the equation and the transfer rate goes down even further. Now take into account the fact that you are copying from slow 5400 RPM disks that effectively max out at around 80 MB/s with these chunks and high latency, add the OS overhead and these transfer rates do not surprise me.

Extremely slow P2 transfer time

What am I doing wrong? I'm experiencing very, very slow transfer times. For example, 30 seconds of video took 6 min. to transfer in the Log and Transfer Window of FCP 7, 5 sec. took 30 sec., 3 minutes of video took over 30 minutes . It came from DVCPRO HD 1080p24 on a P2 card that was copied over to a little Western Digital My Passport USB external HD and connected to my Macbook Pro. I even tried both USB ports and both were slow. I also had my media drive (Fantom Drive 2TQuad connected into the FW800 port because that's my Scratch Drive.
Is the slowness because it's coming from a USB drive rather than a quicker FW drive?Someone said that my laptop may be slowing things down because the 120G internal HD has only 11G available. How much does that contribute to transfer speed into a FCP project?
Would it be better to do an overnight transfer (bypassing FCP and Log and Transfer for the moment) of the eight 64G P2 card footage folders (Content & Text) that are in the little USB drive that's mounted on my desktop and copy them onto my FW media drive and once they're on there, then launch FCP and go to Log and Transfer for the clips I want in my project?
Any ideas would be appreciated because my brain is now completely fried from too much technology.

Nina
You gotta clear your internal of whatever you have clogging it up ... single drive performance decreases significantly as you fill it up, and as a rule you NEVER want to fill a single drive beyond 80% or the performance is going to drop through the floor .. yours is over 90% full, and as it is the system disc then this is going to affect everything. Is it the cause of your dramatically reduced transfer speeds? Don't know, but its an immediate issue you have to address regardless.
Cheers
Andy

Slow USB transfer to Time Capsule

I recently purchased a Time Capsule and have decided in addition to its Time Machine back-up duties to use it to store my iTunes Media, which I had previously had on an external USB HDD (and then use the external USB to back-up Media drive through a folder-syncing app, since Time Machine won't recognise a networked drive). I've connected the USB drive to the TC, and attempted to drag and drop the iTunes Media folder from the external USB to to TC HD.
The estimated time for completion was 7 days for 300GB of data.
Any suggestions as to what is going wrong? Please tell me that the TC isn't sending the data over wireless from the USB disk to my MacBook Pro in order to then send it back over wireless to the TC to write it to that disk! So far the TC isn't looking like a great investment - Time Machine takes so long to back up (spending 10 - 15 minutes preparing the backup and then another 10-15 minutes to write 20 - 30MB of data) that I've turned it off, because the process makes watching my iTunes content jerky. And with this data transfer problem, I'm almost ready to give up.
I'm working with a 2TB Time Capsule, 15" ealry 2011 MacBook Pro (8GB RAM, 250GB SSD), OS X Lion and a 1TB USB HDD

Please tell me that the TC isn't sending the data over wireless from the USB disk to my MacBook Pro in order to then send it back over wireless to the TC to write it to that disk!
Exactly what is happening.. sorry about that chief!! (Maxwell Smart voice).
Unfortunately if you have the external drive connected to the TC and want to write the data to the TC that is what happens.. there is no way it can directly copy since the copy is running from the laptop.
Much better to plug the external drive straight into the laptop.. and plug the laptop into the TC by ethernet cable and do the copy in one shot.. then you can do other backups (your normal incremental time machine) by wireless.
Alway try and eliminate double hop wireless.. it is incredibly slow due to having single channel half duplex operation.
Even if you have to use a separate device to do it.. the speed will be much better.
And it is better to use a usb plugged into the TC just as a backup of the TC.. use the TC itself to store your itunes rather than a drive hanging off it.

N95 8GB SUPER SLOW USB TRANSFER PROBLEM

can someone please tell me why it takes 2 hours to transfer 654 mp3s onto my N95 8GB via USB and it only takes 6 minutes to transfer the same songs onto my iPod nano 8GB
N95 8GB transfer time: 2 hours
iPod nano transfer time: 6 minutes
something is not quite right

I have the same problem with both my N95 8GB's, one has v20.0.0.16 and the other the original v15.something. Both were reasonably fast to start with, but something has changed that made them both slow. I've tried at least 4 different pc's and I've tried upgrading the fw on the one phone but nothing helps.
For example: one day I started making a backup of the phone at 8:30AM, including mass memory, at 4:30PM when I wanted to go home, it had come up to 9%! i.e. content copier is totally useless for a backup this way; I need my phone with me, I can not keep it hooked up to my pc for that long a time just to make a backup... In fact the battery will run empty before the backup finishes.
Another example is trying to get photo's off of the phone using windows' digital camera feature. It times out trying to connect to the camera after something like half an hour it has not found even 1 photo.
If anyone has got a solution, please share it.

Extremely slow file transfer speed

Hello,
Has anyone else had problems transferring files between computers over a 802.11g network? Recently, I found that transferring files via wireless has become incredibly slow. This morning it took about 10 min to transfer a 25MB file from my MacMini to my MacBook Pro. This was not the case several weeks ago.
In terms of updates, neither have the notorious Airport Extreme 2007-001 update installed. Though, I did have to reinstall OS X on the Mini to roll it back. The MacBook Pro does have the Security Update 2007-001 installed where as the Mini does not.
Specs:
Wireless Router: Linksys WRT54GSv4
MacBookPro - 2GHz Core Duo
MacMini - late 2006 - 1.66GHz Core Duo
Thanks

Golybs wrote:
is there a way to find out why "a file is in use" / what process is using it, and kill that process?
Yes. Launch the Terminal utility and enter this command:
sudo lsof | grep "sometext"
That character after "lsof" is a "vertical bar", which should be on the far right of the row with "P". The first character of "lsof" is a lower-case letter "L". The text "sometext" should be replaced with at least part of the name of the file that seems to be locked. The quotes aren't necessary unless there's a space (or one of a few other odd characters) in the text you put in the command. After you type the text, press <return>. You'll be prompted for your administrative password.
If the culprit turns out to be Finder, try clicking on the Finder icon on the Dock while you hold down an "option" key, then choose "Relaunch".
how can I find out if some process is accessing the Time Capsule hard drive, keeping it busy and making the transfers slow?
That's a little harder. You could launch Activity Monitor and click on the "Network" tab in the lower part of the window. I'd also check the quality of the signal to the Time Capsule
If you have an Apple AirPort base station, I'd use the advice in this thread to investigate the signal and noise levels that each Mac sees, as described in this thread:
http://discussions.apple.com/thread.jspa?threadID=2347845&start=1

Slow USB transfer speed when iTunes is running

hello everyone,
today I was trying to transfer a bunch bunch of files from my NAS to a portable USB 3 hard drive.
the transfer speed was 18 to 20 mbytes/s... quite slow for this device.
after investigation the problem was found that when iTunes (11.0.1) is NOT running the tranfer speed goes up to 90+ mbytes/s
anyone has an idea on how to solve the problem?

The only testing that could be performed prior to resetting the AirPort would be to make throughput performance measurements ... but, at best, these would only stand to confirm the slow transfer speeds that you are seeing.
However, if you do want to make some quantitative measurements, one easy to use (& free) utility is: AJA System Test.

Extremly slow mp3 transfer to my muvo v

Hello! I got my "muvo v200" a vew days ago and since i installed it correctly (i think so (- it doesn?t work right. The transfer of the first 0 mp3s (each 3-4MBs) worked fine, but then it began to stop for about 30 seconds, goes on, stops, goes on, and so on... That means that tranferring mp3 to the muvo takes a extremly long time or it breaks up with the message "directory is too long" or something like "transfer-fault" (sorry, i don?t know the exact phrase in english). That problem occours if I transfer data to the muvo, to erase something from it or make a new folder there works right.
I also read about firmware- and driverupdates here, so I did that yesterday. The result was the same, transferring the first 0 songs after updating worked fine, then it stops and I got a little bit angry... (-:
Anybody out there with some help for me?
thanx a lot
andi

Transfer problems often come down to some issue with the PC. Have you tried the MuVo in another PC to see if it works there without issue? This isolates where the problem is.

Super slow usb transfers on non-unibody mac book pro after sl upgrade

Anyone other experienced the slow usb transfer speeds on thier non unibody macbook pro (late 2008) after updating to snow leopard.
I have done some testing using a sandisk cruzer 16gb on my non unibody macbook pro and there are transfer speeds super slow on the other hand with the exactly the same usb drive on my unibody I get the transfer speeds I expect.
Is there anything to do? I've tried SMC & PRAM resets without any difference.
Best,
Max

Start up in Safe Mode. http://support.apple.com/kb/PH18760
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Repair Disk
Steps 1 through 7
http://support.apple.com/kb/PH5836
Upgrading RAM to 8GB will help.
Best.

IPad2 - transfer rate USB to Win7 (direct acces) extremly slow

Hi Guys,
I´ve an iPad2 and like to download 50GB of raw pictures (used the Camera Connection Kit for this) to my Windows7 PC.
Connection via USB work, so I have direct access to my pictures but it´s incredible slow (1.6MB/s).
I´ve also tried it with another PC (also W7), same issue.
Any ideas?
Cheers

Hi Fred,
yes, 50GB is indeed a lot - but that´s the consequence of travelling around with a DSLR :-)
Nevertheless, it took not long to transfer them from my SD Card.
I´ve using of course a USB2.0 port, other devices like my portable HDD are running quite smooth.
I´ve read some tests done by photosgrafs and all of them are fine with the USB transfer rate.
Still no clue what´s wrong.
Cheers

Finder extremely slow, trash takes ages and some USB-devices don't work

My MacPro is lightning fast when booted without extensions (shift down), but when I boot normally some apps work fine, but the Eye TV usb receiver won't work.
Emptying trash might take hours for 1 or 2 files.
Copying files from one HDD to another takes ages
Finder is extremely slow (takes forever to show contents of a mounted DMG).
installing software will often not work.
awkwardly enough FCP seems to work fine while simple use of the finder is nerve wrecking.
iTunes won't launch.
I've tried adding extra memory (got screwed into buying 4GB at extorniate price at the Apple retaier), cleaning up cache, flushing pram, removing Norton AV, removing all old Adobe apps, all tools I never use...
I tried booting without USB and firewire devices.
now the pc HDD connected show full size empty disks where one cannot write...
I already learned to live with the fact that Snow leopard makes my HP Designjet and all my labelprinters from Brother useless, but I need to work. Does someone have an idea on how to get Snow Laggard to become a Snow Leopard?

See:
Mac Maintenance Quick Assist,
Mac OS X speed FAQ,
Speeding up Macs,
Macintosh OS X Routine Maintenance
Essential Mac Maintenance: Get set up,
Essential Mac Maintenance: Rev up your routines,
Maintaining OS X,
Five Mac maintenance myths, and
Myths of required versus not required maintenance for Mac OS X for information.

Extremely slow transfer rate from iOmega eGo to iMac

I am using a brand new 27" iMac and an iOmega eGo 2TB hard drive (http://www.pcmag.com/article2/0,2817,2374133,00.asp). The drive has it's own power source and is connected to my computer via USB.
I'm trying to transfer files from the hard drive to my new iMac and the transfer rate is painfully slow. They are files from my old MacBook which I sold last week.
When the disc is not mounted, it seems to function normally - it's blue indicator light is consistently on and it sounds right. However, when I mount the disc and begin using it - in this instance to transfer files, it goes extremely slow. The blue light will mostly remain off, then interminnently flash on and onscreen a small amount of data will move.
Through disk utility I was able to successfully verify and repair the disc, but it's still behaving this way. Can anyone help? SOS!

I am using a brand new 27" iMac and an iOmega eGo 2TB hard drive (http://www.pcmag.com/article2/0,2817,2374133,00.asp). The drive has it's own power source and is connected to my computer via USB.
I'm trying to transfer files from the hard drive to my new iMac and the transfer rate is painfully slow. They are files from my old MacBook which I sold last week.
When the disc is not mounted, it seems to function normally - it's blue indicator light is consistently on and it sounds right. However, when I mount the disc and begin using it - in this instance to transfer files, it goes extremely slow. The blue light will mostly remain off, then interminnently flash on and onscreen a small amount of data will move.
Through disk utility I was able to successfully verify and repair the disc, but it's still behaving this way. Can anyone help? SOS!

Extremely slow usb transfer/copy

Similar Messages

Maybe you are looking for