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This is a sampling profiler, so it has minimal impact on Traffic Servers performance.

Running the profiler and checking the status. Make sure the call depth is set to where you want it.

Panel

// start the deamon
bcall@snowball trafficserver$ sudo opcontrol --start-daemon
WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/.
Detected stale lock file. Removing.
Using default event: CPU_CLK_UNHALTED:100000:0:1:1
Using 2.6+ OProfile kernel interface.
Using log file /var/lib/oprofile/samples/oprofiled.log
Daemon started.

// check the status
bcall@snowball trafficserver$ sudo opcontrol --status
Daemon running: pid 29524
Separate options: library
vmlinux file: none
Image filter: none
Call-graph depth: 6

After making sure the daemon is running aand your settings are set to what you want. Start traffic server and start running the benchmark. I normally wait a few seconds for things to warm up before I start to profile the code.

Panel

// profile the code for 60 seconds// run some benchmark
bcall@snowball trafficserver$ sudo opcontrol -s; sleep 60; sudo opcontrol -t
Profiler running.
Stopping profiling.

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