7.3. Change Broker Logging Time Resolution

The time stamp resolution of logging can be changed while the broker is running.

Procedure 7.1. Change Resolution Logging on a Running Broker

Edit the file /etc/qpid/qpidd.conf and add the following:

log-time=1
log-enable=info+
log-to-file=/var/lib/qpidd/771830.log

Launch qpid-tool.
Now that you are running qpid-tool, issue the following command:
```
list broker
```
You might have to do this a few times before receiving an answer. It can take a while to get all the info from the broker.
When you see a response similar to this:
```
114  14:03:39  -          amqp-broker
```
Use the number (in this example "114") to refer to the broker.
Issue the following command, substituting the appropriate number for your broker:
```
call 114 setLogHiresTimestamp 1
```
Now look at the log file /var/lib/qpidd/771830.log and verify that it has started using highres time stamps. You might need to do something to get the broker to log a few more lines, for example start another qpid-tool.
To return the logging to the normal resolution, issue the following command in qpid-tool:
```
call 114 setLogHiresTimestamp 0
```
Now look at the logfile again, and verify that it has stopped using highres.