[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/731340
Ti
tdn, this bug was reported a while ago and there hasn't been any
activity in it recently. We were wondering if this is still an issue? If
so, could you please test for this with the latest development release
of Ubuntu? ISO images are available from http://cdimage.ubuntu.com
/daily-live/current/ .
I thought it was just my cpu, then my drives. Till I upgraded both, and
still notice this on 3 systems. All running 10.04 amd64 though.
My drives just go from doing 80MB/s to 2MB/s using luks aes-cbc-essiv:sha256
My other systems are using aes-xts-plain:sha512
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Marking this comfirmed since Grondr also experience this bug. It was
marked incomplete because it was not yet tested on mainline kernel.
However, it has now been tested on mainline as described above.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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You received this bug n
I just installed Natty and brought it up-to-date as of about 4/8; this
is using kernel 2.6.38-8-generic.
Two identical 2TB 4K-sector disks show about a 2x slowdown in LUKS using
XTS and 512-bit keys: doing "time find usr -ls | wc -l" reported about
37 seconds on the ext4 disk, and 1m4s on the ext
** Description changed:
TL;DR: Disk I/O with LUKS is extremely slow on amd64 builds, however, it
is much faster on i386 builds. This has been verified by testing on
multiple hardware platforms and with multiple versions of Ubuntu. The
possible cause of the slowness has been shown to someho
It's not just AMD64, or this is two different bugs---I think it's
actually 10.10 in both AMD64 and i386.
I just installed 10.10 on a WD 500GB IDE disk inside a -non- encrypted
LVM using the alternate installer last week. I spent some time last
night benchmarking I/O using (a) a 2TB SATA 4K-sector
I have just tested with a mainline kernel.
Result: much better performance. Results on Ubuntu 10.10 with the new
kernel was between 3 and 3.6 seconds.
These are the steps I took in order to install the new kernel:
# download
wget
"http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.38-natty/
I will do that.
Which one(s) of the .debs do I need to download and install?
Please note that I use the proprietary nvidia driver. So I would really like
this to keep working.
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Hi tdn,
If you could also please test the latest upstream kernel available that would
be great. It will allow additional upstream developers to examine the issue.
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the
upstream kernel, please remove the 'needs-upstream
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https://bugs.launchpad.net/bugs/731340
Title:
LUKS is extremely slow on amd64 builds but not on i386
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