Package: udev
Version: 154-1
Severity: normal
After switching to dependency based boot, I see one of thr udevd
instances taking 100% CPU time.
In this state, strace shows:
ioctl(6, FIONREAD, [0]) = 0
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN},
{fd=7, events=POLLIN}, {fd=8, events=POLLIN}], 5, 3000) = 1 ([{fd=6,
revents=POLLIN}])
ioctl(6, FIONREAD, [0]) = 0
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN},
{fd=7, events=POLLIN}, {fd=8, events=POLLIN}], 5, 3000) = 1 ([{fd=6,
revents=POLLIN}])
ioctl(6, FIONREAD, [0]) = 0
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN},
{fd=7, events=POLLIN}, {fd=8, events=POLLIN}], 5, 3000) = 1 ([{fd=6,
revents=POLLIN}])
ioctl(6, FIONREAD, [0]) = 0
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN},
{fd=7, events=POLLIN}, {fd=8, events=POLLIN}], 5, 3000) = 1 ([{fd=6,
revents=POLLIN}])
forever.
# udevadm monitor --property
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
gives no more output.
There are 86 instances of udev running.
# ps ax | grep udev | wc -l
86
All except the one using 100% CPU have the --daemon flag.
Doing
sudo sh /etc/init.d/udev restart
fixes the problem.
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.34 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Versions of packages udev depends on:
ii debconf [debconf-2.0] 1.5.32 Debian configuration management sy
ii libc6 2.10.2-9 Embedded GNU C Library: Shared lib
ii libselinux1 2.0.94-1 SELinux runtime shared libraries
ii libusb-0.1-4 2:0.1.12-14 userspace USB programming library
ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip
ii util-linux 2.17.2-2 Miscellaneous system utilities
Versions of packages udev recommends:
ii pciutils 1:3.1.7-3 Linux PCI Utilities
ii usbutils 0.87-1+b1 Linux USB utilities
udev suggests no packages.
-- Configuration Files:
/etc/modprobe.d/blacklist.conf changed [not included]
-- debconf information:
udev/new_kernel_needed: false
udev/title/upgrade:
udev/reboot_needed:
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