Scott James Remnant, 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/ .
If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications-Accessories-Terminal), as it will automatically gather
and attach updated debug information to this report:
apport-collect -p linux replace-with-bug-number
Also, could you please test the latest upstream kernel available (not the daily
folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue. Once you've tested the
upstream kernel, please comment on which kernel version specifically you
tested. If this bug is fixed in the mainline kernel, please add the following
tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested. For
example:
kernel-fixed-upstream-v3.13-rc3
This can be done by clicking on the yellow circle with a black pencil icon next
to the word Tags located at the bottom of the bug description. As well, please
remove the tag:
needs-upstream-testing
If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER
As well, please remove the tag:
needs-upstream-testing
Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.
** This bug is no longer a duplicate of bug 131094
Heavy Disk I/O harms desktop responsiveness
** Attachment removed: samsungq320-lucid-bootchart.png
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/336652/+attachment/1469185/+files/samsungq320-lucid-bootchart.png
** Tags added: needs-kernel-logs needs-upstream-testing
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/336652
Title:
Poor system performance under I/O load
Status in The Linux Kernel:
Invalid
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
This bug seems to particularly affect the Dell Latitude D420, D430 and
(from the kernel.org bug) at least the D830 laptop models; but others
have been reported.
Under I/O load, which need not be excessive - running usb-creator or
even just checking one's email - the system performs remarkably
poorly, far less than other laptop users see. It can often take
minutes to open a window, and sometimes the screen isn't repainted.
Certainly most applications are dimmed by Compiz under I/O.
It also appears to massively negatively affect boot performance, with
one core spending its entire time in I/O wait - something we don't see
elsewhere.
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