#!/usr/bin/ksh # # sampleproc - sample processes on the CPUs. # Written using DTrace (Solaris 10 3/05). # # This program samples which process is on each CPU, at a particular # configurable rate. This can be used as an estimate for which process # is consuming the most CPU time. # # $Id: sampleproc,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ # # USAGE: sampleproc [hertz] # hit Ctrl-C to end sample # # FIELDS: # PID Process ID # COMMAND Command name # COUNT Number of samples # PERCENT Percent of CPU usage # # BASED ON: /usr/demo/dtrace/prof.d # # SEE ALSO: # DTrace Guide "profile Provider" chapter (docs.sun.com) # # PORTIONS: Copyright (c) 2005 Brendan Gregg. # # CDDL HEADER START # # The contents of this file are subject to the terms of the # Common Development and Distribution License, Version 1.0 only # (the "License"). You may not use this file except in compliance # with the License. # # You can obtain a copy of the license at Docs/cddl1.txt # or http://www.opensolaris.org/os/licensing. # See the License for the specific language governing permissions # and limitations under the License. # # CDDL HEADER END # # 09-Jun-2005 Brendan Gregg Created this. # 09-Jul-2005 " " Last update. ### Usage function usage { cat <<-END >&2 USAGE: sampleproc [hertz] eg, sampleproc # defaults to 100 hertz sampleproc 1000 # 1000 hertz END exit 1 } ### Process arguments if (( $# == 0 )); then hertz=100 elif (( $# == 1 )); then hertz=$1 if [[ "$hertz" = *[a-zA-Z]* ]]; then print "ERROR2: $hertz hertz is invalid." >&2 exit 2 fi if (( hertz > 5000 )); then print "ERROR3: $hertz hertz is too fast (max 5000)." >&2 exit 3 fi if (( hertz < 1 )); then print "ERROR4: $hertz hertz is too low (min 1)." >&2 exit 4 fi else usage fi ### Run DTrace /usr/sbin/dtrace -n ' #pragma D option quiet dtrace:::BEGIN { printf("Sampling at %d hertz... Hit Ctrl-C to end.\n",$1); self->start = timestamp; } profile:::profile-$1 { @Proc[pid, execname] = count(); @BigProc[pid, execname] = sum(1000); /* dont ask */ } dtrace:::END { this->end = timestamp; printf("%5s %-20s %10s\n", "PID", "CMD", "COUNT"); printa("%5d %-20s %10@d\n", @Proc); normalize(@BigProc, ((`ncpus_online * $1 * (this->end - self->start))/100000000)); printf("\n%5s %-20s %10s\n", "PID", "CMD", "PERCENT"); printa("%5d %-20s %10@d\n", @BigProc); } ' $hertz