==== run-regress-sigprof ====
cc -O2 -pipe  -g  -MD -MP  -c /home/src/regress/sys/kern/signal/sigprof/sigprof.c
cc   -o sigprof sigprof.o -lpthread
./sigprof
total profiling signals: 400
minimum signals per thread: 50
main thread - 0
thread 1 - 102
thread 2 - 93
thread 3 - 92
thread 4 - 113