I'm fairly sure that the bug that was reported here is due to a kernel bug where utime can decrease. http://kerneltrap.org/mailarchive/linux-kernel/2009/12/2/4514350
I've verified the test program shown in that thread reproduces on my lucid system: $ dpkg -S /boot/vmlinuz-$(uname -r) linux-image-2.6.32-24-server: /boot/vmlinuz-2.6.32-24-server $ dpkg-query --show linux-image-2.6.32-24-server linux-image-2.6.32-24-server 2.6.32-24.43 A single test on my natty system with 2.6.38-1-generic did not reproduce. Source code review indicates both natty and lucid kernels have [1] applied. One way or another this is almost certainly a kernel bug, as mod_status just reads kernel tms. -- [1] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=0cf55e1ec08bb5a22e068309e2d8ba1180ab4239 ** Changed in: linux (Ubuntu) Status: New => Confirmed ** Changed in: apache2 (Ubuntu) Importance: Undecided => Medium ** Changed in: apache2 (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/710319 Title: CPU usage is incorrect on server-status page -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
