EMA C++ Performace Tools Guide : 2 Open Source Performance Tool Suite Overview : 2.5 Recorded Results and Output : 2.5.2 Statistics File
 
2.5.2 Statistics File
Each tool periodically records statistics relevant to that tool. For example, EmaCppConsPerf records:
Latency statistics for updates (and, when so configured, posted content)
Number of request messages sent and refresh messages received
Number of update messages received
Number of generic messages sent and received
Latency statistics for generic messages (when so configured)
Each tool records these statistics on a per-thread basis. If the tool is configured to use multiple threads, the tool generates a file for each thread. For configuration details, refer to the chapter specific to the application that you use.
Each tool can configure statistics recording via the following options:
writeStatsInterval: The interval (from 1 to n, in seconds) at which timed statistics are written to files and the console.
noDisplayStats: Prevents writing periodic stats to console.