[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2010-01-22 Thread Pi
*** This bug is a duplicate of bug 197762 *** https://bugs.launchpad.net/bugs/197762 ** This bug has been marked a duplicate of bug 197762 file transfers on USB flash key (pendrive) are slowing down with time -- dd extremely slow writing to usb key without oflag=dsync https://bugs.launchp

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2010-01-15 Thread florin.balate
Maybe this helps: I read on some forum while I was searching for an answer about the slow write speed on my usb stick (transf speed dropped quickly from 20 MB/s to 100KB/s) that maybe kde is responsible for this. first I ignored this, but I have just tried it. I logged out of my regular KDE ses

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2010-01-15 Thread alex_b
I have the same problem with my HP 6930p (https://wiki.ubuntu.com/LaptopTestingTeam/HPCompaq6930p/Intel). My USB key is a 1GB Apacer key. The output of lsusb is: Bus 002 Device 003: ID 1005:b113 Apacer Technology, Inc. Handy Steno 2.0/HT203 -- dd extremely slow writing to usb key without oflag=d

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2010-01-11 Thread Colin King
@Pete, can't seem to reproduce this with my H/W. Can you: 1. Supply details about the laptop and the USB key you were using 2. See if you can reproduce this on the latest Lucid Alpha. Colin -- dd extremely slow writing to usb key without oflag=dsync https://bugs.launchpad.net/bugs/392288 You re

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2010-01-11 Thread Colin King
** Changed in: linux (Ubuntu) Status: Triaged => In Progress ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Colin King (colin-king) -- dd extremely slow writing to usb key without oflag=dsync https://bugs.launchpad.net/bugs/392288 You received this bug notification because y

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2009-07-28 Thread Pete Graner
I can confirm this is happening to me with 2.6.31-4 on Karmic. Here is a run of dd with and without dsync to a USB stick. pgra...@desktop:~$ sudo dd if=/dev/zero of=/dev/sde1 bs=1M count=1024 oflag=dsync 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 71.9165 s, 14.9 MB/s

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2009-07-13 Thread Chris Cheney
Also (Not directly related to this bug) I have noticed that using cp even on the kernels that does work properly causes the copy to noticeably slow down. It takes > 36m to copy 3.2G (fat32) and only takes 7.25m using dd. -- dd extremely slow writing to usb key without oflag=dsync https://bugs.lau

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2009-07-13 Thread Chris Cheney
I reverted to jaunty due to other problems on karmic and noticed that this bug appears to not occur on jaunty. date -R; time dd if=/dev/zero of=/dev/sdb bs=1M count=1024; date -R Mon, 13 Jul 2009 14:48:35 -0500 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 103.843 s, 10.3

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2009-06-25 Thread Leann Ogasawara
I pointed Chris to try the latest 2.6.31-rc1 kernel, but he said gdm fails to start with that kernel: from #ubuntu-kernel [14:14:18] ogasawara: i tried the 31 kernel and it wouldn't even boot into gdm for me [14:14:36] ogasawara: it just went black after loading the kernel, i think at the poin

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2009-06-25 Thread Chris Cheney
I tried http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.31-rc1/linux- image-2.6.31-020631rc1-generic_2.6.31-020631rc1_amd64.deb as Leann Ogasawara suggested but the screen just went black during boot at the point where gdm should have loaded. I imagine its some sort of KMS issue with my system.

[Bug 392288] Re: dd extremely slow writing to usb key without oflag=dsync

2009-06-25 Thread Chris Cheney
** Attachment added: "BootDmesg.gz" http://launchpadlibrarian.net/28379769/BootDmesg.gz ** Attachment added: "CurrentDmesg.txt" http://launchpadlibrarian.net/28379770/CurrentDmesg.txt ** Attachment added: "Dependencies.txt" http://launchpadlibrarian.net/28379771/Dependencies.txt ** Att