Public bug reported:
Binary package hint: linux-image-2.6.24-15-generic
On Ubuntu 8.04 Beta 32 bit (with current updates) the generic, as well
as the server kernel image shows on my machine a very serious
performance bug: a single thread application needs approximately 50%
more time to execute if both cores are enabled than on the same machine
with only one core enabled (maxcpus=1).
If I disable one of the two cores with maxcpus=1, I get roughly the same
performance as is stated at the benchmark table at mersenne.org/bench.htm .
If I enable boh cores, the performance is much worse.
Expected Result: it should be roughly the same.
Kernel:
linux-image-2.6.24-15-generic Version 2.6.24-15.26
Processor: Intel Core 2 Duo E6600 (2.4 Ghz).
Mainboard: Gigabyte GA-945GM-S2, Bios version F6
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
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 subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
