**ApplicationPerformanceMonitor**
Monitors the Performance of the Application
To configure, edit app/etc/env.php
Add these lines.
```
'application' => [
'performance_monitor' => [
'logger_output_enable' => 1,
'logger_output_verbose' => 0,
]
]
```
Use 0 or 1 as the value to enable or disable.
Both `logger_output_enable` and `logger_output_verbose` default to 0.
The option `logger_output_enable` enables outputting performance metrics to the logger using `debug` method of logger.
The option `logger_output_verbose` adds additional metrics.
Example output in log file without verbose:
```
[2023-10-04T20:48:23.727037+00:00] report.ERROR: "Profile information": {
"applicationClass": "Magento\ApplicationServer\App\Application\Interceptor",
"applicationServer": "1",
"threadPreviousRequestCount": "73",
"memoryUsageAfter": "240 MB",
"memoryUsageAfterComparedToPrevious": "0 B",
"memoryUsageDelta": "118 KB",
"peakMemoryUsageAfter": "243 MB",
"peakMemoryUsageDelta": "0 B",
"wallTimeElapsed": "0 s"
}
```
Example output in log file with verbose:
```
[2023-10-04T20:55:31.174304+00:00] report.ERROR: "Profile information": {
"applicationClass": "Magento\ApplicationServer\App\Application\Interceptor",
"applicationServer": "1",
"threadPreviousRequestCount": "42",
"memoryUsageBefore": "239568640 B",
"memoryUsageAfter": "239686808 B",
"memoryUsageAfterComparedToPrevious": "0 B",
"memoryUsageDelta": "118168 B",
"peakMemoryUsageBefore": "243053632 B",
"peakMemoryUsageAfter": "243053632 B",
"peakMemoryUsageDelta": "0 B",
"wallTimeBefore": "2023-10-04T20:55:31.170300",
"wallTimeAfter": "2023-10-04T20:55:31.174200",
"wallTimeElapsed": "0.0038700103759766 s",
"userTimeBefore": "3.771626 s",
"userTimeAfter": "3.771626 s",
"userTimeElapsed": "0 s",
"systemTimeBefore": "0.095585 s",
"systemTimeAfter": "0.099126 s",
"systemTimeElapsed": "0.003541 s"
}
```
The additional options `newrelic_output_enable` and `newrelic_output_verbose` are only used if ApplicationPerformanceMonitorNewRelic module is also installed and enabled.
See README.md in ApplicationPerformanceMonitorNewRelic for more details on that.