On Sat, 12 Oct 2002, Kris Kennaway wrote:

> I'm having a strange problem with my -current box: I am running the
> bfbtester port on system utilities, which basically forks 100 copies
> of the binary at once to test different options.  The problem is that
> sometimes the -current system becomes unable to fork *any* new
> processes, and even suspending or trying to kill the bfbtester process
> does not work.  The rest of the system performance is fine (I can use
> existing processes with no noticeable CPU latency): so it does not
> appear to be a resource starvation condition.
>
> rot13# ls
> [hangs]
> load: 0.00  cmd: csh 22888 [vmmapw] 0.00u 0.00s 0% 1160k
>
> This process now cannot be interrupted by signals.
>
> => /usr/sbin/sendmail
>    * Single argument testing
> ^Z
> Suspended
> [hang]
> load: 0.00  cmd: tcsh 8403 [inode] 0.01u 0.00s 0% 1076k
>
> Any ideas?

Can you back out my scheduler changes just to be sure?  I can not foresee
any way that they could cause this, but I'd like to be certain.  Blocking
on inode usually indicates a vfs deadlock.  Can you break into ddb and
type 'show lockedvnods' and paste me that output?

Thanks!
Jeff


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