Re: [Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
-- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
How can I do these changes on Karmic's Grub2? There is no menu.lst anymore -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Grub now uses binary configuration format, which has to be generated from a text file. The text file is /etc/default/grub. Edit it, then run update-grub. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
So it worked for me. I added these two parameters to my kopt line in /boot/grub/menu.lst as described in post #233 elevator=noop pci=routeirq It's still not a speed king but it doesn't take ages now. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I believe this is the same bug, I asked in the ubuntuforums.org and someone told me to post my discoveries here: Whenever I plug-in my USB 8gb pendrive to copy a large file, it takes eons. Using Ubuntu 9.10 for AMD64. At first it copies a file at high speeds, because it's not actually writing to the USB but to the cache; at 500-700mb, the write cache is full and flushes, *while* still copying the rest of the file. Since the system is trying to access the USB in two different places at the same time, the transfer speed bunks down, often to 200-300kb/s. The final process, instead of taking 2 minutes, takes one hour. This continues until 1.4gb, when the cache finishes the flush, the copy can continue streamlined and the last 200-300mb are copied again at quicker speeds. I've made a test, copying a 1.6gb file to the USB and waiting for the cache to get full. Once it happens, I copy another file of the same size to the USB at the same time, when it starts copying I cancel the previous copy - cancelling it could take 1-2 minutes, but once it's cancelled, the second copy goes amazingly quick since the pendrive doesn't have any access troubles anymore. However, that means for the trick to work that I can't copy four 1.6 files to the 8gb pendrive, but only three. The fourth one would need an hour unless I start copying it just before the first three finish so the write cache is still not in use or something like that. IMHO the problem is using the cache in certain USB drives. For example the same problem happens with my usb-connected HDD; but due to its faster access time, the slowdown is less noticeable and disappears quickly. The low access time in usb pendrives makes the slowdown due to the cache to last for too long to be bearable. I hope this clarifies the situation; sorry if this has been mentioned before but I didn't have time to check such a long bug report before adding my own experience. Is there simply a method to disable cache (or lower it to a minimum) to an already mounted device? -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Pi, this is consistent with my observations. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
echo 10 dirty_writeback_centisecs echo 10 dirty_expire_centisecs Now it should basically write to the stick continously instead of every 3000 centisecs (30 secs). I learned when I found that transferring terabytes through my gigabit results in 30s long pauses, then 80mb/s for a few seconds and then another pause. The same principle should be applicable to usb sticks, although it won't explain why usb harddrives are much faster... -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Hello Just commenting on the same problem - which for me also appeared with external USB hard drives Transfer rate slowing down with large files. Tried all of the suggestions... -Starting with pci=routeirq helped a little maybe? -Turning off image preview in Nautilus might have helped a little? -Reformatting externals (flash and HDs) to ntfs instead of fat helped the most -Recompiling the latest ntfs-3g helped a little more And then in frustration, I installed Debian(Squeeze) on an extra partition and timed transfers of big files of different types (fat32, ntfs, ext3, ext4) and found that Debian was much much much faster in all cases. Unfortunately though, I seem to have lost the notes with my actual timings Not sure if this helps, but hope it might... the problem (for me at least) seems to be coming from the Ubuntu side... I've used Ubuntu since 8.10 and it has always been slower at transferring files than Windows, but 9.10 was significantly worse. Kind of useable with the mods above, but nowhere near debian. Tried putting some of the relevant debian packages into my ubuntu installation, but no luck (and not enough knowledge/experience in these things I admit) but maybe a possible direction? For now though, finding myself more often booting Debian. All the best, -Neil Toshiba Libretto U100 1gb RAM, lots of external HDs -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
same problem here :( seems to be bugs in kernal, slow copying :( -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
gdneil, kasrawis: Have you tried setting elevator=noop as per post #233? all: I suspect that there might be no singular cause for this problem. If I find the time, I'll try to weed through all of the bug reports (including duplicates) and identify the suspected causes, platforms affected and proposed workarounds. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
** Tags added: kernel-bug ** Changed in: gvfs (Ubuntu) Status: Invalid = Confirmed -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Setting this task back to invalid. @ Fail2Ban: Please do not change the status of tasks without commenting to advise why you have done this. Thanks in advance! ** Changed in: gvfs (Ubuntu) Status: Confirmed = Invalid -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I have this problem too. HP Pavilion (Core 2 Quad, 3 GB RAM, 2.6.31-17-generic x86_64) I was unable to use dd to write a memstick image to a Sandisk USB stick. It was crawling to a virtual stop before reaching 40% complete. I hope my observations will help to solve this problem. My first observation was that I could use dstat output to anticipate the slow down and then press Ctrl-Z to suspend the dd so that the write buffers could drain. Carefully nursing the transfer along resulted in a successful and quick copy. My other observation was that I could work around this problem using the oflag=direct option to dd, which presumably bypasses the lazy write buffering. # dd if=sandisku3.dd of=/dev/sdh bs=256k oflag=direct 7839+1 records in 7839+1 records out 2055021056 bytes (2.1 GB) copied, 217.913 s, 9.4 MB/s I think these observations suggest that the extremely high write backlog (over 700MB Dirty in /proc/meminfo) causes a performance fall-over when available memory resources become exhausted. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I did all the following tests, and always the same problem : speed decrease to 2-3 MB/s. Thinkpad T42p + Ubuntu 9.10 + Linux 2.6.31-17-generic + Nautilus Thinkpad T42p + Ubuntu 9.10 + Linux 2.6.31-17-generic + rsync Thinkpad T42p + Ubuntu 9.10 + Linux 2.6.33-rc6 + Nautilus Thinkpad T42p + Ubuntu 9.10 + Linux 2.6.33-rc6 + rsync Thinkpad X31 + Archlinux + Linux 2.6.32 + Dolphin Thinkpad X31 + Archlinux + Linux 2.6.32 + rsync -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Murz, thanks! Change queue to noop solve my problem without reboot. Now I have stable 8-9 Mbyte/sec with SD class 6 card. This trouble affected my desktop (64 bit) and notebook (32 bit) Ubuntu 9.10 installs. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Update After 10 Gbyte transfer to sd card speed is down again. Scheduler fix is not enought for me. May be it would help for someone - http://ubuntuforums.org/showpost.php?p=8653721postcount=29 yes its fixed, but not in the 2.6.31 kernel branch. I experienced the same problem you described when trying to copy files from my internal hard disk to either a usb external hard disk or a usb thumbdrive. the speed would start at about 30 MB/s then quickly drop down to 5 MB/s and sometimes get down to even 1.5 MB/s. I thought it was pretty funny that i could download files from the Internet at 2.6 MB/s but couldnt even transfer them via usb that fast. It also spiked my CPU and caused my wifi to hang and disconnect as well. Last night I installed the Linux 2.6.33RC3 kernel from: http://kernel.ubuntu.com/~kernel-ppa...e/v2.6.33-rc3/ I ran some tests and found that my USB file transfers ran at full speed and did not drop like before. I should point out that I am running the 64bit kernel so i dont know if this issue exists with the 32bit kernel or not. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
** Changed in: linux (Ubuntu) Status: Triaged = Confirmed ** Description changed: When transferring large files (800meg) or even medium-size files (200meg), the transfer rate decreases constantly. It starts at around 4meg/sec and goes down to even less than 800kb/s. When I cancel the download and start it over again, the transfer rate comes back up to 4meg/sec. I am using Nautilus on Ubuntu 8.04 (hardy heron) + + Bug Still Active up to release 9.10 -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
RishiRamraj: You can see https://help.ubuntu.com/community/DiskPerformance for general advice on testing performance of a disk and reporting your issue. Your snip from dmesg tells that you plugged in a USB 2.0 device, but that is about what can be said from that information, so further performance tests are certainly required. Murz and Digital5700: Your issues with noop as a much better scheduler than cfq are very interesting, but I'm not sure what the best way forward is, bug #381300 and #131094 already exists without really going anywhere. If you can make a good report with dstat numbers etc. and with the newest upstream kernel compiled from git there should be a good chance of getting Jens Axboe looking into the issue (he's the upstream kernel developer that maintains the I/O scheduler subsystem). alex123: You should verify that your front panel USB connections are not USB 1.1, see https://help.ubuntu.com/community/DiskPerformance. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Simon Holm Thøgersen, I can try to do the reports, can you give me some
step-by-step instructions and examples how I can do it better?
I can try to install new kernel and do some tests, if it will not too hard and
long process.
At now I try deadline scheduler and see the problem again after copying about
1.5gb to the flash. At start when copying first gb the speed was about 5-6
mb/sec, but after 1.5gb slows down to 0.2-1.5 mb.
I have attach part of output iostat -m 1 command at ~1.6-1.7 gb copied and
speed is slow down in deadline scheduler.
P.S. I have found an easy way yo check current scheduler and switch it without
reboot at http://www.cyberciti.biz/faq/linux-change-io-scheduler-for-harddisk/:
View Current Disk scheduler
# cat /sys/block/{DEVICE-NAME}/queue/scheduler
# cat /sys/block/sda/queue/scheduler
Sample output:
noop anticipatory deadline [cfq]
Set I/O Scheduler For A Hard Disk
To set a specific scheduler, simply type the command as follows:
# echo {SCHEDULER-NAME} /sys/block/{DEVICE-NAME}/queue/scheduler
** Attachment added: iostat output for deadline scheduler
http://launchpadlibrarian.net/38337580/iostat_deadline_1.txt
--
file transfers on USB flash key (pendrive) are slowing down with time
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[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I just had this problem re-appaer after I fixed it, see my commentsin bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/334914;. Still running with same hardware. Now I'm on 9.10 with kernel: a...@alex-desktop:~$ uname -r 2.6.31-17-generic After I installed 9.10 with its default kernel on release day, I remember to have made backups to my 1TB USB2.0 drive that went at expected speeds. Today I wanted to backup again and it started off fast at ~35MB/s in nautilus but went to ~2MB/s after ~400MB was copied. dstat showed it was writing at ~1.5MB/s. The thing to note here is I connected it to the front-panel of my computer case which is connected to the motherboard. The case is an Antec 900, http://www.antec.com/Believe_it/product.php?id=MTEyOQ==;. Bought it 2 years ago so it may have undergone some revisions. Next I connected the USB drive to the backpanel (USB port directly on motherboard) and now it had normal speeds again, dstat ~30MB/s-40MB/s. The front panel has given me some troubles before since it seems that the slots on it do not always make a good electrical connection, resulting in the device not being recognised or disappearing. But my USB drive stayed reliably connected, just at slow speeds. So now I'm wondering if there may be a technical difference in the front- and backpanel connections that limit the speed. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
elevator=noop solved it for me also, but just as murz says: sometimes under heavy disk activity (dd iso - empty sata drive) some parts of Xorg will pause, sometimes for several minutes. I can also see that noop writes to the usb drives without pausing. Normal elevator writes for a few seconds, pause for 1.5 seconds and then keep writing. Noop writes without pauses. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Setting elevator=noop solve the problem for me, the write speed to usb stick is stable, about 5-6 mb/sec all the time. But now sometimes I see the HDD performance problems while system write to usb. Maybe try other elevator types? Completely Fair Queuing — elevator=cfq Deadline — elevator=deadline NOOP — elevator=noop Anticipatory — elevator=as -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I tried elevator=noop with no success. I've also tried removing the sync option as per the following with no success: http://en.opensuse.org/SDB_Discussion:Automounting_without_the_sync_Option My only symptom so far has been slow data transfer on usb keys and usb external hard drives. I don't notice the degrading speed over time, or any effects to my network speed (only tested scp). I'm running a 64 bit AMD processor with 8 gigs memory on an updated cut of 9.10. I've attached my dmesg log. I'll also try and run some performance tests. Thanks for the help, - Rishi ** Attachment added: dmesg http://launchpadlibrarian.net/38172324/dmesg -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I'm pretty sure that comment 177 will help most of you all. This bug is probably a duplicate of #381300 See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/381300 for more information. Try to set your I/O scheduler to noop and see if transfer rates stay constant. To do this follow these steps: sudo gedit /boot/grub/menu.lst search for the line begining with #kopt and add elevator=noop without the quotes to the end of the line save exit sudo update-grub reboot HTH, ktp. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Thanks ktp. I've applied the change, I'll let you know how it goes. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I have been experimenting some with this problem today. I have been using rsync to copy the files (to get a progress bar), and I noticed that rsync stops updating in periods when this bug is in effect: I first get high transfer speed for a couple of minutes, after this the transfter speed drop down to 100-200kb/s and during this rsync only updates approximately once every half minute. Loading the module xhci seemed to delay the problem for a couple of minutes. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
Re: [Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
søn, 20 12 2009 kl. 20:34 +, skrev Przemysław Kulczycki: So it seems that some subsystem invoked by Gnome (hal? udev? gvfs?) is responsible for the slowdown. Please tell me if this is relevant to this bug or should I file a new one? Everyone should open new reports, you should too. Your problem seems related to mount options, try to find the specific option that makes the difference in performance such that you can mount your disk manually from cli and consistently reproduce good and bad numbers depending on which options you mount your disk with. I've updated https://help.ubuntu.com/community/DiskPerformance to include the part Mounting disk manually gives better performance than auto-mounting and semi-automounting to address your problem. Please see that for more details. To Botond, follow the instructions by Theodore Ts'o and https://help.ubuntu.com/community/DiskPerformance for using dd. slumbergod and everyone else, see https://help.ubuntu.com/community/DiskPerformance. After careful study and if there is still a problem, open a new bug and include a reference to it in this bug. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I've endured painfully slow file transfer with USB flash drives ever since Hardy. It has never improved. It has never been resolved. I realise this issue doesn't affect everyone but it has annoyed me for almost my entire two years with linux. During that time I have used dozens of different USB flash drives (some good brands, some cheap) and across different hardware. I had hoped my latest laptop would be different but no, it is still pathetic. 1-2 Mb/s is hopeless. If I boot into Windows it is always significantly faster i.e. the expected USB 2.0 speed for file transfer. PLEASE PLEASE PLEASE place some importance on this. It has been an issue for far too long. -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
@Przemysław Kulczycki: It's not because your usb hard drive is working fine that it's the same for others (in my case my LACIE 3.5 160Go is slowing down). And with more than 200 comments, we can see that everyone has the same symptoms but different causes. This bug report is not usefull anymore due to its life time and the quantity of reports. It seems a low level issue, lower than cp and move commands. Maybe a Kernel or Kernel compilation issue? -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
I've did some test and I managed to narrow this bug somehow. My setup: Macbook 2,1; Intel USB controller; Ubuntu 9.10 64-bit. 1st try: Patriot Xporter 4GB flash drive - no problems. 2nd try: Patriot Xporter 16GB drive - slows down when writing to USB drive under Gnome. It worked fine when I booted to recovery mode (pure CLI, no Gnome), mounted the drive manually and copied over 700MB of data. It slowed down in Gnome, both with automounting, and with manual mounting (though this time I can't guarantee that Gnome wasn't involved in that because I just remounted the drive manually after the Gnome's autodetection). So it seems that some subsystem invoked by Gnome (hal? udev? gvfs?) is responsible for the slowdown. Please tell me if this is relevant to this bug or should I file a new one? I'm attaching the output of dstat ran while copying in Gnome. ** Attachment added: dstat-sdb1-gnome-automount-try1.txt http://launchpadlibrarian.net/36999761/dstat-sdb1-gnome-automount-try1.txt -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Here's my dmesg. Please note that I also have a USB 3.5 hard disk and it works fine. The problem is only with the pendrive. ** Attachment added: dmesg.txt http://launchpadlibrarian.net/36999785/dmesg.txt -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
Here's dstat run in recovery mode - everything is fine. ** Attachment added: dstat-sdb1-recoverymode-manualmount-try1.txt http://launchpadlibrarian.net/36999821/dstat-sdb1-recoverymode-manualmount-try1.txt -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 197762] Re: file transfers on USB flash key (pendrive) are slowing down with time
And here's dstat ran when I tried manual mounting while in Gnome, but it might be the same as automount because I just remounted the drive manually after an automounting in Gnome. ** Attachment added: dstat-sdb1-gnome-manualmount-try1.txt http://launchpadlibrarian.net/36999838/dstat-sdb1-gnome-manualmount-try1.txt -- file transfers on USB flash key (pendrive) are slowing down with time https://bugs.launchpad.net/bugs/197762 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
