Don't kill udev - just restart it: sudo restart udev For me and others - this cures the problem...
Scott On Mon, Mar 1, 2010 at 5:07 PM, Mark Fernandes <commentedc...@gmail.com>wrote: > @Chase Douglas, > > You are right, if the stop udev command is put into /etc/rc.local my usb > keyboard and mouse are not recognized at startup. However if I do not > have the stop udev command in /etc/rc.local and only run the stop > command after booting up and logging in with the usb keyboard and mouse > plugged in I get to keep the mouse and keyboard and still reduce the > load. Of course, it wont recognize other usb changes subsequently. I > understand this is a hack, but if I do not stop udev then I run out of > battery power pretty quickly and my laptop heats up very fast. > > One point though: this was not an issue with 9.04, because I never > experienced this problem there. I did not try 9.10 so I cannot say. So > this, to me, indicates that it might not be a hardware problem because > the Optiarc DVD drive was working fine in 9.04, unless the drivers have > changed with 10.04 and that is causing the excessive load. > > -- > CD-ROM polling on some Optiarc drives causes high CPU usage > https://bugs.launchpad.net/bugs/379780 > You received this bug notification because you are a direct subscriber > of the bug. > > Status in The Linux Kernel: Confirmed > Status in abstraction for enumerating and managing block devices: Fix > Released > Status in “linux” package in Ubuntu: Triaged > Status in “udisks” package in Ubuntu: Fix Released > > Bug description: > Binary package hint: udev > > Before I upgraded the udev version of jaunty from 141-1 to 141-1.1, 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%. > > I am using the amd64 version of Xubuntu 9.04 on a Acer Extensa 5230 laptop > with a 2 GHz Intel Celeron processor, and I have my root, home and swap > partitions encrypted with luks. I did a fresh install and installed nothing > but the software updates. > > The output of top looks like this: > > top - 18:47:33 up 15 min, 2 users, load average: 1.48, 1.99, 1.50 > Tasks: 125 total, 3 running, 122 sleeping, 0 stopped, 0 zombie > Cpu(s): 11.3%us, 23.9%sy, 0.0%ni, 60.1%id, 0.0%wa, 4.3%hi, 0.3%si, > 0.0%st > Mem: 940212k total, 637176k used, 303036k free, 872k buffers > Swap: 2103444k total, 0k used, 2103444k free, 346116k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 939 root 16 -4 16792 600 296 S 3.0 0.1 0:17.03 udevd > 15937 haldaemo 20 0 36304 4872 3756 S 1.7 0.5 0:04.29 hald > 16403 root 20 0 451m 51m 17m R 1.7 5.6 0:25.92 Xorg > 30 root 15 -5 0 0 0 S 0.7 0.0 0:05.52 scsi_eh_1 > 5480 andreas 20 0 19116 1328 988 R 0.3 0.1 0:00.89 top > 22747 andreas 20 0 174m 17m 8960 R 0.3 1.9 0:01.14 xfce4-terminal > 1 root 20 0 4104 924 632 S 0.0 0.1 0:00.87 init > 2 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kthreadd > 3 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/0 > 4 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0 > 5 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 > 6 root 15 -5 0 0 0 S 0.0 0.0 0:00.65 events/0 > 7 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 khelper > 8 root RT -5 0 0 0 S 0.0 0.0 0:00.00 kstop/0 > 9 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kintegrityd/0 > ... > > > > To unsubscribe from this bug, go to: > https://bugs.launchpad.net/linux/+bug/379780/+subscribe > -- CD-ROM polling on some Optiarc drives causes high CPU usage https://bugs.launchpad.net/bugs/379780 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
