elektron/docs/data/withSpsEnabled/SchedulingPolicySwitchTrace.md

# Scheduling Policy Switch Trace

Every time _Elektron_ switches to a different scheduling policy, the name of the scheduling policy and the time at which the switch took place is logged.

The logs are written to a file named _\<logFilePrefix\>\_\<timestamp\>\_schedPolSwitch.log_, where
* _logFilePrefix_ is the prefix provided using the `-logPrefix` option.
* _timestamp_ corresponds to the time when _Elektron_ was run.

The format of the data logged is as shown below.
```
[<loglevel>]: <yyyy-mm-dd> <hh:mm:ss> Name=<sched policy name>
```

_Note: The names of the scheduling policies can be found [here](https://gitlab.com/spdf/elektron/blob/master/schedulers/store.go#L14)_
Description for scheduling policy switch trace. 2018-10-05 22:49:23 -04:00			`# Scheduling Policy Switch Trace`

			`Every time _Elektron_ switches to a different scheduling policy, the name of the scheduling policy and the time at which the switch took place is logged.`

Escape underscore. Changed 'scheduling' to 'sched' in format. 2018-10-05 23:06:04 -04:00			`The logs are written to a file named _\<logFilePrefix\>\_\<timestamp\>\_schedPolSwitch.log_, where`
Description for scheduling policy switch trace. 2018-10-05 22:49:23 -04:00			* _logFilePrefix_ is the prefix provided using the `-logPrefix` option.
			`* _timestamp_ corresponds to the time when _Elektron_ was run.`

			`The format of the data logged is as shown below.`
			```
Elektron Logging library (#16) switch to logrus for logging. replaced old logging library with a wrapper around logrus. We now just need to use the exported Log(...) and Logf(...) from the logging/ package that wraps around a set of loggers constituting a chain (following COR). Loggers are configured using a YAML file that specifies the following. 1. enabled/disabled 2. whether the message should be logged on console. 3. filename extension. 4. minimum log level. Retrofitted source code to now use the updated logging library. Updated the documentation with information regarding the specification of the log config file. Currently, the log format in the config file is not adhered to. This is going to be addressed in a future commit. 2019-12-09 20:15:33 -05:00			`[<loglevel>]: <yyyy-mm-dd> <hh:mm:ss> Name=<sched policy name>`
Description for scheduling policy switch trace. 2018-10-05 22:49:23 -04:00			```

			`_Note: The names of the scheduling policies can be found [here](https://gitlab.com/spdf/elektron/blob/master/schedulers/store.go#L14)_`