# stap sig_by_proc.stp 
Collecting data... Type Ctrl-C to exit and display results
^C
SENDER           RECEIVER         SIGNAL           COUNT
swapper          Xvnc             SIGALRM          448
sh               wcstatusd        SIGCHLD          318
ifconfig         sh               SIGCHLD          106
mii-tool         sh               SIGCHLD          106
lspci            wcstatusd        SIGCHLD          106
automount        automount        SIGCHLD          14
swapper          automount        SIGALRM          13
swapper          syslogd          SIGALRM          7
swapper          sendmail         SIGALRM          2
sendmail         sendmail         SIGCHLD          2
lspci            Xvnc             SIGALRM          2
ifconfig         automount        SIGALRM          1
sh               Xvnc             SIGALRM          1
xterm            staprun          SIGINT           1
xterm            stap             SIGINT           1