Collecting performance records dynamically

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The performance profile information in trace is intended to help users diagnose performance problems. By using the independent trace facility, performance profiling is accomplished with minimum impact on server performance.

About this task

The independent trace facility profiles operation performance that consists of timestamps at key points that are traversed during an operation execution for a running server instance. The timestamps are profiled during different stages such as the following stages:

RDBM search processing
RDBM bind processing
RDBM compare processing
RDBM write processing

To activate tracing of performance records dynamically, complete the following steps.

Procedure

Activate tracing for performance records. Issue the following command:

ldaptrace –h hostname -p port number -D adminDN -w adminPW -l on \
–t start -- -perf

Dump the trace to a binary trace file. Issue the following command:
```
ldtrc dump trace.bin
```
Format the trace. Issue the following command:
```
ldtrc fmt trace.bin trace.txt
```

What to do next

After you format the trace, you can analyze the trace and diagnose performance problems. To turn off tracing, issue the following command:

ldtrc off

For more information about performance profiling, see the Administering section in the IBM® Verify Directory documentation.