[Bug 67126] events/0 uses all of cpu, causes big slowdown

[sam tygier]

Public bug reported:

Binary package hint: linux-source

running edgy on powerpc (powerbook ti G4).

sometimes after waking from sleep the cpu is at 100% and the computer is
very unresponsive. top gives

Tasks: 118 total,   7 running, 111 sleeping,   0 stopped,   0 zombie
Cpu(s):  4.2%us, 95.0%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.8%hi,  0.0%si,  0.0%st
Mem:   1033800k total,  1026572k used,     7228k free,   229508k buffers
Swap:   524276k total,        0k used,   524276k free,   384428k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                              
    4 root      20  -5     0    0    0 R 94.4  0.0   1:11.16 events/0                             
 4333 root      16   0  177m  24m  13m R  3.3  2.4   1:44.57 Xorg                                 
 5452 sam       15   0 82316  19m  11m S  1.7  2.0   0:13.35 gnome-terminal                       
 3648 haldaemo  15   0  8892 5880 1880 S  0.8  0.6   0:04.10 hald                                 
 5077 sam       15   0 78180  26m  17m S  0.8  2.7   1:19.00 gnome-panel                          
 5116 sam       16   0 48496 9.8m 8280 S  0.8  1.0   0:12.73 gnome-cups-icon                      
    1 root      16   0  1832  636  544 S  0.0  0.1   0:01.89 init                                 
    2 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0                          
    3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 watchdog/0

sleeping and waking again often cure this.

today my ralink rt2500 pcmcia card was not working. i did
sudo cardctl eject
sudo cardctl insert
and got the same slowdown.
sudo cardctl eject
cured it.

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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events/0 uses all of cpu, causes big slowdown
https://launchpad.net/bugs/67126