Here is a simple utility for Linux that can terminate a Csound
process that has locked up the system as a result of too high
CPU usage with --sched. It takes a list of PIDs as argument.

An example of using the utility:

   su -c 'csound -d -m0 -H0 -s -h -o dac --sched ...'

     in another terminal:

   ps ax | grep csound

   14197 pts/6    S+     0:00 su -c ./csound -d -m0 -H0 ...
   14198 pts/6    SL+    0:06 ./csound -d -m0 -H0 -s -h ...

   ./rtwd 14198

Istvan Varga wrote:

> static int cnt = 0;

A minor correction: this line should be replaced with

static volatile int cnt = 0;


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This is an improved version that will terminate all processes
(except itself) that have a thread with a scheduling policy
other than SCHED_OTHER in case of a lock-up.
It does not require any command line arguments, but an optional
parameter may be specified which sets the minimum PID value that
will receive SIGTERM/SIGKILL signals.