is magicdev evil?
Tommy McNeely
Tommy.McNeely at Sun.com
Mon Oct 6 21:41:13 UTC 2003
On Mon, 06 Oct 2003 17:14:25 -0400, Owen Taylor wrote:
> On Mon, 2003-10-06 at 16:57, Tommy McNeely wrote:
>> [quoted text muted]
>
> Basically:
>
> A) If magicdev is eating 25% of your CPU, something is going wrong,
> and you shoudl file a bug so we can fix it. It isn't supposed to do
> that.
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
16744 tommy 18 0 5664 5664 4852 S 7.5 0.5 0:01 0 magicdev
16749 tommy 17 0 1152 1152 888 R 0.3 0.1 0:00 0 top
13056 root 15 0 295M 39M 9320 S 0.1 3.9 2:50 0 X
13227 tommy 15 0 16628 16M 8428 S 0.1 1.6 0:11 0 gnome-termina
what about 7.5-11% ? I mean I cant get it to go back to 25% for some
reason :)
>
> There was a kernel bug recently in this area, but unless your
> /var/log/messages is getting filled with lots and lots of junk, that's
> not it.
>
I am running severn-beta2 ... wihtout any updates (see my other up2date
message)
Oct 6 12:51:11 cookies /etc/hotplug/usb.agent: Setup usbcore for USB product 5e3/604/12
Oct 6 12:51:11 cookies /etc/hotplug/usb.agent: Setup usbcore for USB product 5e3/604/12
Oct 6 12:51:11 cookies /etc/hotplug/usb.agent: Setup hid for USB product 45e/47/300
Oct 6 12:51:11 cookies /etc/hotplug/usb.agent: Setup mousedev for USB product 45e/47/300
Oct 6 12:51:12 cookies devlabel: devlabel service started/restarted
Oct 6 12:51:12 cookies /etc/hotplug/usb.agent: Setup hid for USB product 430/5/102
Oct 6 12:51:12 cookies /etc/hotplug/usb.agent: Setup keybdev for USB product 430/5/102
Oct 6 12:51:13 cookies devlabel: devlabel service started/restarted
Oct 6 12:51:13 cookies devlabel: devlabel service started/restarted
Oct 6 12:56:59 cookies kernel: usb.c: USB disconnect on device 00:07.4-2 address 10
Oct 6 12:56:59 cookies kernel: usb.c: USB disconnect on device 00:07.4-2.1 address 11
Oct 6 12:56:59 cookies kernel: usb.c: USB disconnect on device 00:07.4-2.2 address 12
Oct 6 12:57:07 cookies devlabel: devlabel service started/restarted
Oct 6 12:57:07 cookies last message repeated 2 times
Oct 6 13:45:27 cookies smartd[4117]: Device: /dev/sda, Temperature changed -1 degrees to 31 degrees since last reading
Oct 6 14:28:56 cookies kernel: hub.c: new USB device 00:07.4-2, assigned address 13
Oct 6 14:28:56 cookies kernel: hub.c: USB hub found
Oct 6 14:28:56 cookies kernel: hub.c: 4 ports detected
Oct 6 14:28:57 cookies kernel: hub.c: new USB device 00:07.4-2.1, assigned address 14
Oct 6 14:28:57 cookies kernel: input: USB HID v1.10 Mouse [Microsoft Microsoft 5-Button Mouse with IntelliEye(TM)] on usb1:14.0
Oct 6 14:28:57 cookies kernel: hub.c: new USB device 00:07.4-2.2, assigned address 15
Oct 6 14:28:57 cookies kernel: input: USB HID v1.00 Keyboard [0430:0005] on usb1:15.0
Oct 6 14:28:59 cookies /etc/hotplug/usb.agent: Setup usbcore for USB product 5e3/604/12
Oct 6 14:28:59 cookies /etc/hotplug/usb.agent: Setup usbcore for USB product 5e3/604/12
Oct 6 14:29:00 cookies /etc/hotplug/usb.agent: Setup hid for USB product 45e/47/300
Oct 6 14:29:00 cookies /etc/hotplug/usb.agent: Setup mousedev for USB product 45e/47/300
Oct 6 14:29:00 cookies /etc/hotplug/usb.agent: Setup hid for USB product 430/5/102
Oct 6 14:29:00 cookies /etc/hotplug/usb.agent: Setup keybdev for USB product 430/5/102
Oct 6 14:29:00 cookies devlabel: devlabel service started/restarted
Oct 6 14:29:02 cookies last message repeated 2 times
Oct 6 14:29:18 cookies modprobe: modprobe: Can't locate module sound-slot-1
Oct 6 14:29:18 cookies modprobe: modprobe: Can't locate module sound-service-1-0
Oct 6 14:29:18 cookies modprobe: modprobe: Can't locate module sound-slot-1
Oct 6 14:29:18 cookies modprobe: modprobe: Can't locate module sound-service-1-0
Oct 6 14:46:04 cookies smartd[4117]: Device: /dev/sda, Temperature changed 1 degrees to 32 degrees since last reading
Oct 6 15:16:22 cookies smartd[4117]: Device: /dev/sda, Temperature changed -1 degrees to 31 degrees since last reading
Oct 6 15:34:36 cookies userhelper: pam_timestamp: timestamp file `/var/run/sudo/tommy/1:root' is only 14 seconds old, allowing access to up2date for UID 123
Oct 6 15:34:38 cookies userhelper: pam_timestamp: timestamp file `/var/run/sudo/tommy/1:root' is only 2 seconds old, allowing access to up2date for UID 123
> You should file a bug with a) any messages that are appearing in
> /var/log/messages b) a short snippet of the strace of magicdev
>
waiting to see if 7-11% is still bad enough for a bug
> killall magicdev
> strace -o /tmp/magicdev.log magicdev
> <wait 20 seconds>
> <control-c>
>
> c) The contents of /proc/ide/hdc/model (modify as appropriate if your
> cd-rom is elsewhere.)
>
> B) No, CDROMS do not reliably send a signal when they are opened
> and closed. There are things in the spec for that, they are not
> implemented uniformly.
its nice to have standards :)
-Tommy
>
> There may be better things to do than what magicdev does. They
> probably would require full-time work for about a month for a pair of
> a test engineer and a developer to get going and make reliable.
>
> (Basically, you have to have a big list of hardware with information
> on what works where.)
>
> Regards,
> Owen
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