yiyongyun wrote:

If i want to reduce the time of authentication by modify code in freeradius, which code I can modify?

What does that mean? The server doesn't have Microsoft-style "busy loops" that do nothing. Most of the CPU time in the server is spent doing MD5 calculations (for signing packets), or RSA calculations (for EAP methods). Most of the "wall clock" time is spent querying external databases. As with all of these kinds of questions, you need to describe the PROBLEM, not the SOLUTION. If the server is running "too slow" for you... find out why. Upgrade your database, or buy a faster machine. Alan DeKok.