http://bugzilla.kernel.org/show_bug.cgi?id=13783 Summary: udev causes high cpu usage Product: IO/Storage Version: 2.5 Kernel Version: 2.6.31-rc3 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: SCSI AssignedTo: linux-scsi@xxxxxxxxxxxxxxx ReportedBy: AndreasFackler@xxxxxx Regression: No Created an attachment (id=22372) --> (http://bugzilla.kernel.org/attachment.cgi?id=22372) Output of "udevadm monitor --environment" with udev-141-1.2 and kernel 2.6.30 Before I upgraded the udev version of Ubuntu 9.04 from 141-1 to 141-1.1 (and 141-1.2), top reported about 2% total cpu usage when idle. After the update, it rarely drops below 35%. Though top lists udevd among the more cpu hungry processes, it is only listed with about 3%, while system (in line 3) almost never drops below 20%. "udevadm monitor --environment" after the upgrade reports many additional events with "SUBSYSTEM=scsi" and "ACTION=change". I am using the amd64 version of Xubuntu 9.04 on a Acer Extensa 5230 laptop with a 2 GHz Intel Celeron processor. The problem occurs with all the kernel versions I tried: The Ubuntu kernel 2.6.28 and the mainline kernels 2.6.30 and 2.6.31-rc3. See also the Ubuntu bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/379780 -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
