This bug report was marked as Incomplete and has not had any updated
comments for quite some time. As a result this bug is being closed.
Please reopen if this is still an issue in the current Ubuntu release
http://www.ubuntu.com/getubuntu/download . Also, please be sure to
provide any requested
This bug report was marked as Triaged a while ago but has not had any
updated comments for quite some time. Please let us know if this issue
remains in the current Ubuntu release,
http://www.ubuntu.com/getubuntu/download . If the issue remains, click
on the current status under the Status column
The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the
upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would
appreciate it if you could please test this newer 2.6.27 Ubuntu kernel.
There are one of two ways you should be able to test:
1) If you are comfortable
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
Assignee: (unassigned) = Ubuntu Kernel Team (ubuntu-kernel-team)
Status: New = Triaged
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Hardy kernel: single thread performance on dual core much worse than with
maxcpus=1
https://bugs.launchpad.net/bugs/212201
You
I tested again with Centos 5.1 (Red Hat Enterprise Linux 5.1). The
problem does not exist there. So this definitely seems to be an Ubuntu
specific problem.
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Hardy kernel: single thread performance on dual core much worse than with
maxcpus=1
https://bugs.launchpad.net/bugs/212201
You received
** Attachment added: uname-a.log
http://launchpadlibrarian.net/13143971/uname-a.log
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Hardy kernel: single thread performance on dual core much worse than with
maxcpus=1
https://bugs.launchpad.net/bugs/212201
You received this bug notification because you are a member of Ubuntu
Bugs, which
** Attachment added: lspci-vvnn.log
http://launchpadlibrarian.net/13143977/lspci-vvnn.log
--
Hardy kernel: single thread performance on dual core much worse than with
maxcpus=1
https://bugs.launchpad.net/bugs/212201
You received this bug notification because you are a member of Ubuntu
Bugs,
** Attachment added: dmidecode.log
http://launchpadlibrarian.net/13143978/dmidecode.log
--
Hardy kernel: single thread performance on dual core much worse than with
maxcpus=1
https://bugs.launchpad.net/bugs/212201
You received this bug notification because you are a member of Ubuntu
Bugs,
** Attachment added: dmesg.log
http://launchpadlibrarian.net/13143980/dmesg.log
--
Hardy kernel: single thread performance on dual core much worse than with
maxcpus=1
https://bugs.launchpad.net/bugs/212201
You received this bug notification because you are a member of Ubuntu
Bugs, which is
Attached are the results of an mprime benchmark run (Option 19 at the mprime
menu).
First run with maxcups=1 at the grub boot menu.
Second run without any additional boot options.
Third run without any additional boot options, but with two instances of mprime
running simultaniously.
**
additional information:
1) the E6600 is a first generation Core 2 Duo processor. It is not able
to increase the clock, if only one core is used.
2) there seems to be no thermal problem: the case is really well cooled
and there used to be a thermaltake typhoon sitting on the CPU, now it is
an
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