2.6.0-test6-mm1: too many defunct event threads

2.6.0-test6-mm1: too many defunct event threads

[Ricardo Galli]

Just tested -mm1 in my laptop, with synaptics drivers, and saw lots of 
zombi event threads.

This does not occur in stock -test6.

gallir@minime:~$ ps ax| grep events
    3 ?        SW<    0:00 [events/0]
  389 ?        Z<     0:00 [events/0] <defunct>
  391 ?        Z<     0:00 [events/0] <defunct>
  393 ?        Z<     0:00 [events/0] <defunct>
  396 ?        Z<     0:00 [events/0] <defunct>
  398 ?        Z<     0:00 [events/0] <defunct>
  400 ?        Z<     0:00 [events/0] <defunct>
  402 ?        Z<     0:00 [events/0] <defunct>
  404 ?        Z<     0:00 [events/0] <defunct>
  406 ?        Z<     0:00 [events/0] <defunct>
  434 ?        Z<     0:00 [events/0] <defunct>
  436 ?        Z<     0:00 [events/0] <defunct>
  438 ?        Z<     0:00 [events/0] <defunct>
  440 ?        Z<     0:00 [events/0] <defunct>
  442 ?        Z<     0:00 [events/0] <defunct>
  444 ?        Z<     0:00 [events/0] <defunct>
  450 ?        Z<     0:00 [events/0] <defunct>
  452 ?        Z<     0:00 [events/0] <defunct>
  454 ?        Z<     0:00 [events/0] <defunct>
  456 ?        Z<     0:00 [events/0] <defunct>
  462 ?        Z<     0:00 [events/0] <defunct>
  464 ?        Z<     0:00 [events/0] <defunct>
  466 ?        Z<     0:00 [events/0] <defunct>
  469 ?        Z<     0:00 [events/0] <defunct>
  471 ?        Z<     0:00 [events/0] <defunct>
  473 ?        Z<     0:00 [events/0] <defunct>
  544 ?        Z<     0:00 [events/0] <defunct>
  707 ?        Z<     0:00 [events/0] <defunct>
  709 ?        Z<     0:00 [events/0] <defunct>
  711 ?        Z<     0:00 [events/0] <defunct>
  713 ?        Z<     0:00 [events/0] <defunct>
  738 ?        Z<     0:00 [events/0] <defunct>
  740 ?        Z<     0:00 [events/0] <defunct>
  742 ?        Z<     0:00 [events/0] <defunct>
  745 ?        Z<     0:00 [events/0] <defunct>
  776 ?        Z<     0:00 [events/0] <defunct>
  779 ?        Z<     0:00 [events/0] <defunct>
  783 ?        Z<     0:00 [events/0] <defunct>
  785 ?        Z<     0:00 [events/0] <defunct>


Regards,

-- 
  ricardo galli       GPG id C8114D34
  http://mnm.uib.es/~gallir/

Re: 2.6.0-test6-mm1: too many defunct event threads

[Chris Wright]

* Ricardo Galli (gallir@uib.es) wrote:
> Just tested -mm1 in my laptop, with synaptics drivers, and saw lots of 
> zombi event threads.

Please revert the call_usermodehelper patch.

ftp:/ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test6/2.6.0-test6-mm1/broken-out/call_usermodehelper-retval-fix-2.patch

thanks,
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net

Re: 2.6.0-test6-mm1: too many defunct event threads

[Ricardo Galli]

On Monday 29 September 2003 21:27, Chris Wright shaped the electrons to 
shout:
> * Ricardo Galli (gallir@uib.es) wrote:
> > Just tested -mm1 in my laptop, with synaptics drivers, and saw lots
> > of zombi event threads.
>
> Please revert the call_usermodehelper patch.
>
> ftp:/ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test
>6/2.6.0-test6-mm1/broken-out/call_usermodehelper-retval-fix-2.patch

Sorry, a late comer, as always: http://lkml.org/lkml/2003/9/29/152

Seen it. Tested it. Solved it.

Thanks.

BTW, we cannot find the reason for the synaptics timeouts:

Synaptics driver lost sync at 4th byte
Synaptics driver lost sync at 1st byte
Synaptics driver resynced.
Synaptics driver lost sync at 1st byte
Synaptics driver lost sync at 1st byte
Synaptics driver lost sync at 1st byte
Synaptics driver lost sync at 1st byte
Synaptics driver lost sync at 1st byte
Synaptics driver resynced.

which are the only glitches I find to it.


-- 
  ricardo galli       GPG id C8114D34
  http://mnm.uib.es/~gallir/

Re: 2.6.0-test6-mm1: too many defunct event threads

[Peter Osterlund]

Ricardo Galli <gallir@uib.es> writes:

> BTW, we cannot find the reason for the synaptics timeouts:
> 
> Synaptics driver lost sync at 4th byte
> Synaptics driver lost sync at 1st byte
> Synaptics driver resynced.
> Synaptics driver lost sync at 1st byte
> Synaptics driver lost sync at 1st byte
> Synaptics driver lost sync at 1st byte
> Synaptics driver lost sync at 1st byte
> Synaptics driver lost sync at 1st byte
> Synaptics driver resynced.
> 
> which are the only glitches I find to it.

Did you try to modify the driver to use low packet rate reporting, ie
40 packets/s instead of 80?

-- 
Peter Osterlund - petero2@telia.com
http://w1.894.telia.com/~u89404340

Re: 2.6.0-test6-mm1: too many defunct event threads

[Ricardo Galli]

On Tuesday 30 September 2003 00:21, Peter Osterlund shaped the electrons 
to shout:
> > Synaptics driver lost sync at 1st byte
> > Synaptics driver resynced.
> >
> > which are the only glitches I find to it.
>
> Did you try to modify the driver to use low packet rate reporting, ie
> 40 packets/s instead of 80?

Just tested, the same errors. 

Also confirmed that was configured to low rate by checking the interrupts 
rate, exactly half as before (220 vs 440 ints. per second).

So...?

minime:~# cat /proc/interrupts
           CPU0
  0:     310917          XT-PIC  timer
  1:        149          XT-PIC  i8042
  2:          0          XT-PIC  cascade
  8:          4          XT-PIC  rtc
 10:       2938          XT-PIC  yenta, yenta, uhci-hcd, Intel 
82801CA-ICH3, orinoco_cs
 11:          2          XT-PIC  ohci1394, uhci-hcd, uhci-hcd
 12:       9314          XT-PIC  i8042
 14:       5519          XT-PIC  ide0
NMI:          0
ERR:          0



-- 
  ricardo galli       GPG id C8114D34
  http://mnm.uib.es/~gallir/