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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.
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// 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.
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// 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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