[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 500069] Re: since Ubuntu karmic Filetransfer to some USB Drives got realy slow
*** This bug is a duplicate of bug 197762 *** https://bugs.launchpad.net/bugs/197762 sbec67: Have you tried your device with another OS with different performance results? From your lsusb output is does not look like your device is listed? Was it plugged in when you ran lsusb? If that doesn't turn up anything obvious you should probably see https://help.ubuntu.com/community/DiskPerformance and test whether the raw device performance is better than when formatted. Backup your data on the device first. dd numbers with bs=1M in addition to the bs=32 would also be interesting. -- since Ubuntu karmic Filetransfer to some USB Drives got realy slow https://bugs.launchpad.net/bugs/500069 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee (via bug 197762). -- 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
Re: [Bug 197762] Re: file transfers on USB disk are very slow
ons, 10 06 2009 kl. 22:38 +, skrev jamesnmandy: Hiding behind a proper bug request gets us nowhere. And you posting useless information in this bug does? It's not working like it is supposed to and that's painfully obvious. And it should be painfully obvious by now that the issue cannot be fixed if nobody can provide sufficient information to solve the problem. Capisce? I really don't want to be rude, but how do you expect anyone to fix a problem this vaguely described? It is not like we can reproduce it with our own hardware, on the contrary it works as expected. It is not exactly easy to tell that the BIOS should be upgraded to fix the problem like in [1]. So send us your hardware, provide root ssh access to the hardware with or give us a proper report. It is not like it should be too difficult to follow the troubleshooting steps of [2] or simply shut up. I can tell you my same exact hardware works multitudes better in terms of USB performance running the other OS. Not sure what a bug report has to do with that, it's a fact. It is a good first step to know the hardware doesn't suck, then we can move on to the next in [2]. And I sympathize with you and others not being tech savy and just want your OS to work, but unless you actually pay for support or someone to look at your problem you should respect that there is only so much you can expect of people using their spare time to support you. -- file transfers on USB disk are very slow 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 disk are very slow
[1] https://bugs.launchpad.net/ubuntu/+bug/334914/comments/30 [2] https://help.ubuntu.com/community/DiskPerformance -- file transfers on USB disk are very slow 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 disk are very slow
man, 08 06 2009 kl. 20:14 +, skrev epv: This isn't normal behavior. Obviously it behaves fine while all writes are going to buffer cache, but once it tries to write it out to the device, wait times on the partition shoot up to 30sec or more, and all processes trying to touch the usb disk block practically forever. If other processes get completely starved due to the writeout then there is probably something in the VM, file system or I/O scheduler that needs to be fixed. You would have to make a convincing argument, though, like providing a very simple usecase. It should literally be something as simple as the following (cp bigfile /media/disk/ ) ; sleep 10 ; time echo foo /media/disk/bar If the time is really in seconds as you seem to suggest it is interesting I'd say. On the other hand, if what you describe is due the low performance of the underlying device then it is expected behaviour (the low performance of the device might be due to a bug though). Sysstat shows it as 100% busy continuously. 'It' being the underlying device? That is what you would expect. The reports of Fast at first, then slowing down are of course because of the buffer cache making it look like it's initially fast but access to the underlying device is always very slow, whether you are writing to it with gvfs, cp, dd, buffer, or whatever. Yes, and? In addition, it's only writes that are slow, and they're vastly slower than could be explained by a crappy USB device- in my case around 100 - 200 kbytes/sec on a device that under a Hardy install writes at several mbytes/sec. If Hardy was fine then you should open a new bug report with the proper details (once again, see [1] or Theodore's comments). [1] https://help.ubuntu.com/community/DiskPerformance -- file transfers on USB disk are very slow 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 disk are very slow
On Mon, Jun 8, 2009 at 9:54 PM, jamesnmandy jamesnma...@gmail.com wrote: There's no way all these people are seeing this behaviour because they all have vastly different yet commonly crappy hardware. The same exact hardware works great under the other OS. It's 100% a *nix issue and it's 100% in the software. That's painfully obvious. Stop thinking that Nautilus is a good indicator of speed already damnit! It is possible that you and other users really get buggily slow performance, but I assure that there is just as many in this thread that experience no other bugs than themselves interpretting Nautilus wrong. And since you didn't notice, there is nothing to solve as there haven't been supplied sufficient information to diagnose a bug. If you've got hardware that performs significantly better with Windows or different kernels then file a proper bug. I wish this would get fixed really soon, I recently went back to the other OS and it itself has many stability issues that Ubuntu does not have, so I promptly switched back to 9.04. And I wish all you people got a clue as how to make a useful bug report really soon, but it seems like I'll have to go back to dreaming. Not sure if this has been mentioned or not, but I noticed today that performance is much much better when copying directories to directories vs. copying a file to a directory. For example, I had a directory on my desktop, with three subdirectories, each with two files in them. When I right-click copy and then right-click paste on to my external USB HDD to a particular directory the file transfer speed stays at 15MBps +/- instead of the usual starting at 15MBps and tapering off to 5MBps or less and eventually just stopping altogether. The total size of the main directory being copied was just over 36GB. Each of the three subdirectories contained a 10-12GB file and a smaller 60kb file each. Are these dstat numbers? Anyway, file a proper bug if you want progress. -- file transfers on USB disk are very slow 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 disk are very slow
MVDHR, and why should we care? This bug has been open for a year and 50 people have commented here, so news would be that the problem actually went away. You give no information that helps further debug the issue, please read https://help.ubuntu.com/community/DiskPerformance and diagnose your problem according to the tips given there before posting anything further. And please, please, please open a new bug once you've followed through with that page since it actively hurts when people hi-jacks other peoples bugs for what might be a completely different issue. -- file transfers on USB disk are very slow 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 disk are very slow
Night64, flash devices are slow and the only reason the transfer appears to be fast at the beginning is that data is written to OS memory and then later to disk. Use dstat to monitor disk performance as explained on https://help.ubuntu.com/community/DiskPerformance, And open new bug reports please (though not in this case since your device is just slow, unless you can demonstrate better performance using Windows everything is as expected). -- file transfers on USB disk are very slow 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 disk are very slow
So, I believe I am the one Theodore refered to as venting how the useless Ubuntu bug reports are. While they really are, I also really want to help. So, following Theodore's suggestion I've started https://help.ubuntu.com/community/DiskPerformance on the Ubuntu Wiki. It is pretty basic right now, mostly repeating what Theodore already wrote here. Let's follow this from here (or rather in separate bug reports as Leann and Theodore have already advocated) and expand it according to common patterns of the reports. -- file transfers on USB disk are very slow 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
